light leakage through loose threads, teflon tape

[Phil Hobbs]

On 5/29/19 11:17 AM, tabbypurr@gmail.com wrote:

On Wednesday, 29 May 2019 14:46:30 UTC+1, Phil Hobbs wrote:
On 5/29/19 2:16 AM, tabbypurr wrote:
On Wednesday, 29 May 2019 00:31:22 UTC+1, Phil Hobbs wrote:
On 5/28/19 5:09 PM, tabbypurr wrote:
On Tuesday, 28 May 2019 18:27:16 UTC+1, Phil Hobbs wrote:

Yup. All our threaded piping is NPT, precisely so you can torque
it till it doesn't leak. Why would anyone use a non-tapered pipe
thread? Is that really the standard over there?

Cheers

Phil Hobbs

I guess that's like asking why would anyone use an Edison plug. Some
things might be better changed but don't need to be, and there would
be a downside to doing so.

Well, Edison plugs don't leak a lot of electrons.

Hmm. You get a lot more electrical fires than we do.

Not so you'd notice. From net searches, it seems as though you folks
have about 6000-7000 electrical fires a year, and we have about 28000.
Since the US has about five times the population of the UK, we may even
be a bit ahead.

Cheers

Phil Hobbs

It seems you're right. Maybe wirenuts aren't as terrible as I thought. They've been banned here since the 50s.


NT

Wire nuts are a disaster with aluminum wiring, but work well with
copper. Honking big ones with seventeen #14 conductors crammed in them
are another matter, but I don't think the code allows that anyway. Two
or three conductors, twisted tightly for at least 2 or 3 full turns, and
then the nut holds them together and provides additional gas-tight
connections, a la wire wrap wire.

Cheers

Phil Hobbs

--
Dr Philip C D Hobbs
Principal Consultant
ElectroOptical Innovations LLC / Hobbs ElectroOptics
Optics, Electro-optics, Photonics, Analog Electronics
Briarcliff Manor NY 10510

http://electrooptical.net
http://hobbs-eo.com

 

On Wednesday, 29 May 2019 14:46:30 UTC+1, Phil Hobbs wrote:

On 5/29/19 2:16 AM, tabbypurr wrote:
On Wednesday, 29 May 2019 00:31:22 UTC+1, Phil Hobbs wrote:
On 5/28/19 5:09 PM, tabbypurr wrote:
On Tuesday, 28 May 2019 18:27:16 UTC+1, Phil Hobbs wrote:

Yup. All our threaded piping is NPT, precisely so you can torque
it till it doesn't leak. Why would anyone use a non-tapered pipe
thread? Is that really the standard over there?

Cheers

Phil Hobbs

I guess that's like asking why would anyone use an Edison plug. Some
things might be better changed but don't need to be, and there would
be a downside to doing so.

Well, Edison plugs don't leak a lot of electrons.

Hmm. You get a lot more electrical fires than we do.

Not so you'd notice. From net searches, it seems as though you folks
have about 6000-7000 electrical fires a year, and we have about 28000.
Since the US has about five times the population of the UK, we may even
be a bit ahead.

Cheers

Phil Hobbs

It seems you're right. Maybe wirenuts aren't as terrible as I thought. They've been banned here since the 50s.


NT

 

[George Herold]

On Wednesday, May 29, 2019 at 11:17:38 AM UTC-4, tabb...@gmail.com wrote:

On Wednesday, 29 May 2019 14:46:30 UTC+1, Phil Hobbs wrote:
On 5/29/19 2:16 AM, tabbypurr wrote:
On Wednesday, 29 May 2019 00:31:22 UTC+1, Phil Hobbs wrote:
On 5/28/19 5:09 PM, tabbypurr wrote:
On Tuesday, 28 May 2019 18:27:16 UTC+1, Phil Hobbs wrote:

Yup. All our threaded piping is NPT, precisely so you can torque
it till it doesn't leak. Why would anyone use a non-tapered pipe
thread? Is that really the standard over there?

Cheers

Phil Hobbs

I guess that's like asking why would anyone use an Edison plug. Some
things might be better changed but don't need to be, and there would
be a downside to doing so.

Well, Edison plugs don't leak a lot of electrons.

Hmm. You get a lot more electrical fires than we do.

Not so you'd notice. From net searches, it seems as though you folks
have about 6000-7000 electrical fires a year, and we have about 28000.
Since the US has about five times the population of the UK, we may even
be a bit ahead.

Cheers

Phil Hobbs

It seems you're right. Maybe wirenuts aren't as terrible as I thought. They've been banned here since the 50s.

Huh, what do you use if you have no wire nuts? For say ~10A house wiring?

George H.

NT

 

[Lasse Langwadt Christense]

onsdag den 29. maj 2019 kl. 17.56.34 UTC+2 skrev George Herold:

On Wednesday, May 29, 2019 at 11:17:38 AM UTC-4, tabb...@gmail.com wrote:
On Wednesday, 29 May 2019 14:46:30 UTC+1, Phil Hobbs wrote:
On 5/29/19 2:16 AM, tabbypurr wrote:
On Wednesday, 29 May 2019 00:31:22 UTC+1, Phil Hobbs wrote:
On 5/28/19 5:09 PM, tabbypurr wrote:
On Tuesday, 28 May 2019 18:27:16 UTC+1, Phil Hobbs wrote:

Yup. All our threaded piping is NPT, precisely so you can torque
it till it doesn't leak. Why would anyone use a non-tapered pipe
thread? Is that really the standard over there?

Cheers

Phil Hobbs

I guess that's like asking why would anyone use an Edison plug. Some
things might be better changed but don't need to be, and there would
be a downside to doing so.

Well, Edison plugs don't leak a lot of electrons.

Hmm. You get a lot more electrical fires than we do.

Not so you'd notice. From net searches, it seems as though you folks
have about 6000-7000 electrical fires a year, and we have about 28000.
Since the US has about five times the population of the UK, we may even
be a bit ahead.

Cheers

Phil Hobbs

It seems you're right. Maybe wirenuts aren't as terrible as I thought. They've been banned here since the 50s.

Huh, what do you use if you have no wire nuts? For say ~10A house wiring?

screw or spring loaded connectors

 

[Klaus Kragelund]

Winfield was in one reply wondering about max SMD temperature, probably including PCB temperature for long life

We normally use max PCB temperature of 105 degrees,but I have been unable to find reasoning for this value

Did some digging and found this thorough report of PCB reliability:

http://www.circuitinsight.com/pdf/long_term_thermal_reliability_ipc.pdf

Seems from table 12 that a good target is maximum 140 degrees

Cheers

Klaus

 

[Winfield Hill]

Klaus Kragelund wrote...

Winfield was in one reply wondering about max SMD
temperature, probably including PCB temperature for
long life.

We normally use max PCB temperature of 105 degrees,
but I have been unable to find reasoning for this
value.

Did some digging and found this thorough report of
PCB reliability:

http://www.circuitinsight.com/pdf/long_term_thermal_reliability_ipc.pdf

Seems from table 12 that a good target is maximum
140 degrees.

OK, I can believe that for the PCB, but if the PCB
is 140 C, what's the semi junction temp going to be?
For my prototype, I've been using abs max PCB temps
of 115 to 120C. It's quite limiting. With six SMT
parts, dissipating 2.5W total, I'm getting 150C.


--
Thanks,
- Win

 

[Joseph Gwinn]

On May 29, 2019, George Herold wrote
(in article<b78831a2-4d1d-4320-95d5-dee37a3bc050@googlegroups.com&gt:

On Wednesday, May 29, 2019 at 11:17:38 AM UTC-4, tabb...@gmail.com wrote:

On Wednesday, 29 May 2019 14:46:30 UTC+1, Phil Hobbs wrote:
On 5/29/19 2:16 AM, tabbypurr wrote:
On Wednesday, 29 May 2019 00:31:22 UTC+1, Phil Hobbs wrote:
On 5/28/19 5:09 PM, tabbypurr wrote:
On Tuesday, 28 May 2019 18:27:16 UTC+1, Phil Hobbs wrote:

Yup. All our threaded piping is NPT, precisely so you can torque
it till it doesn't leak. Why would anyone use a non-tapered pipe
thread? Is that really the standard over there?

Cheers

Phil Hobbs

I guess that's like asking why would anyone use an Edison plug. Some
things might be better changed but don't need to be, and there would
be a downside to doing so.

Well, Edison plugs don't leak a lot of electrons.

Hmm. You get a lot more electrical fires than we do.

Not so you'd notice. From net searches, it seems as though you folks
have about 6000-7000 electrical fires a year, and we have about 28000.
Since the US has about five times the population of the UK, we may even
be a bit ahead.

Cheers

Phil Hobbs

It seems you're right. Maybe wirenuts aren't as terrible as I thought.
They've been banned here since the 50s.

Huh, what do you use if you have no wire nuts? For say ~10A house wiring?

Barrier terminal
strips:<https://www.mouser.com/ProductDetail/TE-Connectivity-Buchanan/1776293-
3>.

Joe Gwinn

 

[Chris]

On Thursday, 30 May 2019 01:56:34 UTC+10, George Herold wrote:

On Wednesday, May 29, 2019 at 11:17:38 AM UTC-4, tabb...@gmail.com wrote:
On Wednesday, 29 May 2019 14:46:30 UTC+1, Phil Hobbs wrote:
On 5/29/19 2:16 AM, tabbypurr wrote:
On Wednesday, 29 May 2019 00:31:22 UTC+1, Phil Hobbs wrote:
On 5/28/19 5:09 PM, tabbypurr wrote:
On Tuesday, 28 May 2019 18:27:16 UTC+1, Phil Hobbs wrote:

Yup. All our threaded piping is NPT, precisely so you can torque
it till it doesn't leak. Why would anyone use a non-tapered pipe
thread? Is that really the standard over there?

Cheers

Phil Hobbs

I guess that's like asking why would anyone use an Edison plug. Some
things might be better changed but don't need to be, and there would
be a downside to doing so.

Well, Edison plugs don't leak a lot of electrons.

Hmm. You get a lot more electrical fires than we do.

Not so you'd notice. From net searches, it seems as though you folks
have about 6000-7000 electrical fires a year, and we have about 28000.
Since the US has about five times the population of the UK, we may even
be a bit ahead.

Cheers

Phil Hobbs

It seems you're right. Maybe wirenuts aren't as terrible as I thought. They've been banned here since the 50s.

Huh, what do you use if you have no wire nuts? For say ~10A house wiring?

George H.


NT

<https://www.sparkydirect.com.au/p/30399/nls-30399-2-x-35mm-heavy-duty-double-screw-connect.html>

<https://www.sparkydirect.com.au/p/30007/nls-single-screw-insulated-electrical-connector-2.html>

--
Cheers,
Chris.

 

On Wednesday, 29 May 2019 16:33:10 UTC+1, Phil Hobbs wrote:

On 5/29/19 11:17 AM, tabbypurr wrote:
On Wednesday, 29 May 2019 14:46:30 UTC+1, Phil Hobbs wrote:
On 5/29/19 2:16 AM, tabbypurr wrote:
On Wednesday, 29 May 2019 00:31:22 UTC+1, Phil Hobbs wrote:
On 5/28/19 5:09 PM, tabbypurr wrote:
On Tuesday, 28 May 2019 18:27:16 UTC+1, Phil Hobbs wrote:

Yup. All our threaded piping is NPT, precisely so you can torque
it till it doesn't leak. Why would anyone use a non-tapered pipe
thread? Is that really the standard over there?

Cheers

Phil Hobbs

I guess that's like asking why would anyone use an Edison plug. Some
things might be better changed but don't need to be, and there would
be a downside to doing so.

Well, Edison plugs don't leak a lot of electrons.

Hmm. You get a lot more electrical fires than we do.

Not so you'd notice. From net searches, it seems as though you folks
have about 6000-7000 electrical fires a year, and we have about 28000.
Since the US has about five times the population of the UK, we may even
be a bit ahead.

Cheers

Phil Hobbs

It seems you're right. Maybe wirenuts aren't as terrible as I thought. They've been banned here since the 50s.


NT


Wire nuts are a disaster with aluminum wiring, but work well with
copper. Honking big ones with seventeen #14 conductors crammed in them
are another matter, but I don't think the code allows that anyway. Two
or three conductors, twisted tightly for at least 2 or 3 full turns, and
then the nut holds them together and provides additional gas-tight
connections, a la wire wrap wire.

Cheers

Phil Hobbs

Ali wiring is its own pile of trouble. It's not permitted here, though old installs are occasionally found.


NT

 

On Wednesday, 29 May 2019 16:56:34 UTC+1, George Herold wrote:

On Wednesday, May 29, 2019 at 11:17:38 AM UTC-4, tabby wrote:
On Wednesday, 29 May 2019 14:46:30 UTC+1, Phil Hobbs wrote:
On 5/29/19 2:16 AM, tabbypurr wrote:
On Wednesday, 29 May 2019 00:31:22 UTC+1, Phil Hobbs wrote:
On 5/28/19 5:09 PM, tabbypurr wrote:
On Tuesday, 28 May 2019 18:27:16 UTC+1, Phil Hobbs wrote:

Yup. All our threaded piping is NPT, precisely so you can torque
it till it doesn't leak. Why would anyone use a non-tapered pipe
thread? Is that really the standard over there?

Cheers

Phil Hobbs

I guess that's like asking why would anyone use an Edison plug. Some
things might be better changed but don't need to be, and there would
be a downside to doing so.

Well, Edison plugs don't leak a lot of electrons.

Hmm. You get a lot more electrical fires than we do.

Not so you'd notice. From net searches, it seems as though you folks
have about 6000-7000 electrical fires a year, and we have about 28000.
Since the US has about five times the population of the UK, we may even
be a bit ahead.

Cheers

Phil Hobbs

It seems you're right. Maybe wirenuts aren't as terrible as I thought. They've been banned here since the 50s.

Huh, what do you use if you have no wire nuts? For say ~10A house wiring?

Choc blocks, they're screw connectors. Most circuits are 6A lighting or 32A sockets, with sometimes 20A sockets & on the odd occasion 10A lighting. Cookers & showers are whatever they need to be, often 32A or 40A.

IMHO it would make sense to transition to 1A single insulated lighting for small buried circuits, but it won't happen.


NT

 

[George Herold]

On Thursday, May 30, 2019 at 6:20:48 AM UTC-4, tabb...@gmail.com wrote:

On Wednesday, 29 May 2019 16:56:34 UTC+1, George Herold wrote:
On Wednesday, May 29, 2019 at 11:17:38 AM UTC-4, tabby wrote:
On Wednesday, 29 May 2019 14:46:30 UTC+1, Phil Hobbs wrote:
On 5/29/19 2:16 AM, tabbypurr wrote:
On Wednesday, 29 May 2019 00:31:22 UTC+1, Phil Hobbs wrote:
On 5/28/19 5:09 PM, tabbypurr wrote:
On Tuesday, 28 May 2019 18:27:16 UTC+1, Phil Hobbs wrote:

Yup. All our threaded piping is NPT, precisely so you can torque
it till it doesn't leak. Why would anyone use a non-tapered pipe
thread? Is that really the standard over there?

Cheers

Phil Hobbs

I guess that's like asking why would anyone use an Edison plug. Some
things might be better changed but don't need to be, and there would
be a downside to doing so.

Well, Edison plugs don't leak a lot of electrons.

Hmm. You get a lot more electrical fires than we do.

Not so you'd notice. From net searches, it seems as though you folks
have about 6000-7000 electrical fires a year, and we have about 28000.
Since the US has about five times the population of the UK, we may even
be a bit ahead.

Cheers

Phil Hobbs

It seems you're right. Maybe wirenuts aren't as terrible as I thought. They've been banned here since the 50s.

Huh, what do you use if you have no wire nuts? For say ~10A house wiring?

Choc blocks, they're screw connectors. Most circuits are 6A lighting or 32A sockets, with sometimes 20A sockets & on the odd occasion 10A lighting. Cookers & showers are whatever they need to be, often 32A or 40A.

OK, thanks.. (and Joe and Chris)

George h.

IMHO it would make sense to transition to 1A single insulated lighting for small buried circuits, but it won't happen.


NT

 

[Phil Hobbs]

On 5/30/19 6:16 AM, tabbypurr@gmail.com wrote:

On Wednesday, 29 May 2019 16:33:10 UTC+1, Phil Hobbs wrote:
On 5/29/19 11:17 AM, tabbypurr wrote:
On Wednesday, 29 May 2019 14:46:30 UTC+1, Phil Hobbs wrote:
On 5/29/19 2:16 AM, tabbypurr wrote:
On Wednesday, 29 May 2019 00:31:22 UTC+1, Phil Hobbs wrote:
On 5/28/19 5:09 PM, tabbypurr wrote:
On Tuesday, 28 May 2019 18:27:16 UTC+1, Phil Hobbs
wrote:

Yup. All our threaded piping is NPT, precisely so you
can torque it till it doesn't leak. Why would anyone
use a non-tapered pipe thread? Is that really the
standard over there?

Cheers

Phil Hobbs

I guess that's like asking why would anyone use an Edison
plug. Some things might be better changed but don't need
to be, and there would be a downside to doing so.

Well, Edison plugs don't leak a lot of electrons.

Hmm. You get a lot more electrical fires than we do.

Not so you'd notice. From net searches, it seems as though you
folks have about 6000-7000 electrical fires a year, and we have
about 28000. Since the US has about five times the population
of the UK, we may even be a bit ahead.

Cheers

Phil Hobbs

It seems you're right. Maybe wirenuts aren't as terrible as I
thought. They've been banned here since the 50s.


NT


Wire nuts are a disaster with aluminum wiring, but work well with
copper. Honking big ones with seventeen #14 conductors crammed in
them are another matter, but I don't think the code allows that
anyway. Two or three conductors, twisted tightly for at least 2 or
3 full turns, and then the nut holds them together and provides
additional gas-tight connections, a la wire wrap wire.

Cheers

Phil Hobbs

Ali wiring is its own pile of trouble. It's not permitted here,
though old installs are occasionally found.

Hasn't been used here in ages either AFAIK.

Cheers

Phil Hobbs

--
Dr Philip C D Hobbs
Principal Consultant
ElectroOptical Innovations LLC / Hobbs ElectroOptics
Optics, Electro-optics, Photonics, Analog Electronics
Briarcliff Manor NY 10510

http://electrooptical.net
http://hobbs-eo.com

 

On Wed, 29 May 2019 19:14:18 -0700 (PDT), Chris <chris.863@live.com>
wrote:

On Thursday, 30 May 2019 01:56:34 UTC+10, George Herold wrote:
On Wednesday, May 29, 2019 at 11:17:38 AM UTC-4, tabb...@gmail.com wrote:
On Wednesday, 29 May 2019 14:46:30 UTC+1, Phil Hobbs wrote:
On 5/29/19 2:16 AM, tabbypurr wrote:
On Wednesday, 29 May 2019 00:31:22 UTC+1, Phil Hobbs wrote:
On 5/28/19 5:09 PM, tabbypurr wrote:
On Tuesday, 28 May 2019 18:27:16 UTC+1, Phil Hobbs wrote:

Yup. All our threaded piping is NPT, precisely so you can torque
it till it doesn't leak. Why would anyone use a non-tapered pipe
thread? Is that really the standard over there?

Cheers

Phil Hobbs

I guess that's like asking why would anyone use an Edison plug. Some
things might be better changed but don't need to be, and there would
be a downside to doing so.

Well, Edison plugs don't leak a lot of electrons.

Hmm. You get a lot more electrical fires than we do.

Not so you'd notice. From net searches, it seems as though you folks
have about 6000-7000 electrical fires a year, and we have about 28000.
Since the US has about five times the population of the UK, we may even
be a bit ahead.

Cheers

Phil Hobbs

It seems you're right. Maybe wirenuts aren't as terrible as I thought. They've been banned here since the 50s.

Huh, what do you use if you have no wire nuts? For say ~10A house wiring?

George H.


NT

https://www.sparkydirect.com.au/p/30399/nls-30399-2-x-35mm-heavy-duty-double-screw-connect.html

https://www.sparkydirect.com.au/p/30007/nls-single-screw-insulated-electrical-connector-2.html

Holy crap! 50x the price of wire nuts!

 

On Thu, 30 May 2019 16:39:59 -0400, Phil Hobbs
<pcdhSpamMeSenseless@electrooptical.net> wrote:

On 5/30/19 6:16 AM, tabbypurr@gmail.com wrote:
On Wednesday, 29 May 2019 16:33:10 UTC+1, Phil Hobbs wrote:
On 5/29/19 11:17 AM, tabbypurr wrote:
On Wednesday, 29 May 2019 14:46:30 UTC+1, Phil Hobbs wrote:
On 5/29/19 2:16 AM, tabbypurr wrote:
On Wednesday, 29 May 2019 00:31:22 UTC+1, Phil Hobbs wrote:
On 5/28/19 5:09 PM, tabbypurr wrote:
On Tuesday, 28 May 2019 18:27:16 UTC+1, Phil Hobbs
wrote:

Yup. All our threaded piping is NPT, precisely so you
can torque it till it doesn't leak. Why would anyone
use a non-tapered pipe thread? Is that really the
standard over there?

Cheers

Phil Hobbs

I guess that's like asking why would anyone use an Edison
plug. Some things might be better changed but don't need
to be, and there would be a downside to doing so.

Well, Edison plugs don't leak a lot of electrons.

Hmm. You get a lot more electrical fires than we do.

Not so you'd notice. From net searches, it seems as though you
folks have about 6000-7000 electrical fires a year, and we have
about 28000. Since the US has about five times the population
of the UK, we may even be a bit ahead.

Cheers

Phil Hobbs

It seems you're right. Maybe wirenuts aren't as terrible as I
thought. They've been banned here since the 50s.


NT


Wire nuts are a disaster with aluminum wiring, but work well with
copper. Honking big ones with seventeen #14 conductors crammed in
them are another matter, but I don't think the code allows that
anyway. Two or three conductors, twisted tightly for at least 2 or
3 full turns, and then the nut holds them together and provides
additional gas-tight connections, a la wire wrap wire.

Cheers

Phil Hobbs

Ali wiring is its own pile of trouble. It's not permitted here,
though old installs are occasionally found.

Hasn't been used here in ages either AFAIK.

Not true. AL wiring is still allowed for point-to-point 220V wiring,
like ranges and dryers. All of the components are designed for AL
wiring, of course. Cost trumps safety, I guess. I've found a lot of
loose connections in these appliances.

 

On Thu, 30 May 2019 18:19:02 -0700 (PDT), Lasse Langwadt Christensen
<langwadt@fonz.dk> wrote:

fredag den 31. maj 2019 kl. 03.05.10 UTC+2 skrev k...@notreal.com:
On Wed, 29 May 2019 19:14:18 -0700 (PDT), Chris <chris.863@live.com
wrote:

On Thursday, 30 May 2019 01:56:34 UTC+10, George Herold wrote:
On Wednesday, May 29, 2019 at 11:17:38 AM UTC-4, tabb...@gmail.com wrote:
On Wednesday, 29 May 2019 14:46:30 UTC+1, Phil Hobbs wrote:
On 5/29/19 2:16 AM, tabbypurr wrote:
On Wednesday, 29 May 2019 00:31:22 UTC+1, Phil Hobbs wrote:
On 5/28/19 5:09 PM, tabbypurr wrote:
On Tuesday, 28 May 2019 18:27:16 UTC+1, Phil Hobbs wrote:

Yup. All our threaded piping is NPT, precisely so you can torque
it till it doesn't leak. Why would anyone use a non-tapered pipe
thread? Is that really the standard over there?

Cheers

Phil Hobbs

I guess that's like asking why would anyone use an Edison plug. Some
things might be better changed but don't need to be, and there would
be a downside to doing so.

Well, Edison plugs don't leak a lot of electrons.

Hmm. You get a lot more electrical fires than we do.

Not so you'd notice. From net searches, it seems as though you folks
have about 6000-7000 electrical fires a year, and we have about 28000.
Since the US has about five times the population of the UK, we may even
be a bit ahead.

Cheers

Phil Hobbs

It seems you're right. Maybe wirenuts aren't as terrible as I thought. They've been banned here since the 50s.

Huh, what do you use if you have no wire nuts? For say ~10A house wiring?

George H.


NT

https://www.sparkydirect.com.au/p/30399/nls-30399-2-x-35mm-heavy-duty-double-screw-connect.html

https://www.sparkydirect.com.au/p/30007/nls-single-screw-insulated-electrical-connector-2.html

Holy crap! 50x the price of wire nuts!

looks like that single screw ones are 100pcs

I use the "Euro-style" terminal strips for wiring at work. 8 or 10
connection, two screw per, strips are about $6ea. It didn't make
sense but I didn't see the quantity in the title. Thanks for pointing
that out. How do you connect four or five wires together (common in
multi-gang switch boxes)?

 

[Lasse Langwadt Christense]

fredag den 31. maj 2019 kl. 03.05.10 UTC+2 skrev k...@notreal.com:

On Wed, 29 May 2019 19:14:18 -0700 (PDT), Chris <chris.863@live.com
wrote:

On Thursday, 30 May 2019 01:56:34 UTC+10, George Herold wrote:
On Wednesday, May 29, 2019 at 11:17:38 AM UTC-4, tabb...@gmail.com wrote:
On Wednesday, 29 May 2019 14:46:30 UTC+1, Phil Hobbs wrote:
On 5/29/19 2:16 AM, tabbypurr wrote:
On Wednesday, 29 May 2019 00:31:22 UTC+1, Phil Hobbs wrote:
On 5/28/19 5:09 PM, tabbypurr wrote:
On Tuesday, 28 May 2019 18:27:16 UTC+1, Phil Hobbs wrote:

Yup. All our threaded piping is NPT, precisely so you can torque
it till it doesn't leak. Why would anyone use a non-tapered pipe
thread? Is that really the standard over there?

Cheers

Phil Hobbs

I guess that's like asking why would anyone use an Edison plug. Some
things might be better changed but don't need to be, and there would
be a downside to doing so.

Well, Edison plugs don't leak a lot of electrons.

Hmm. You get a lot more electrical fires than we do.

Not so you'd notice. From net searches, it seems as though you folks
have about 6000-7000 electrical fires a year, and we have about 28000.
Since the US has about five times the population of the UK, we may even
be a bit ahead.

Cheers

Phil Hobbs

It seems you're right. Maybe wirenuts aren't as terrible as I thought. They've been banned here since the 50s.

Huh, what do you use if you have no wire nuts? For say ~10A house wiring?

George H.


NT

https://www.sparkydirect.com.au/p/30399/nls-30399-2-x-35mm-heavy-duty-double-screw-connect.html

https://www.sparkydirect.com.au/p/30007/nls-single-screw-insulated-electrical-connector-2.html

Holy crap! 50x the price of wire nuts!

looks like that single screw ones are 100pcs

 

[Lasse Langwadt Christense]

fredag den 31. maj 2019 kl. 03.29.52 UTC+2 skrev k...@notreal.com:

On Thu, 30 May 2019 18:19:02 -0700 (PDT), Lasse Langwadt Christensen
langwadt@fonz.dk> wrote:

fredag den 31. maj 2019 kl. 03.05.10 UTC+2 skrev k...@notreal.com:
On Wed, 29 May 2019 19:14:18 -0700 (PDT), Chris <chris.863@live.com
wrote:

On Thursday, 30 May 2019 01:56:34 UTC+10, George Herold wrote:
On Wednesday, May 29, 2019 at 11:17:38 AM UTC-4, tabb...@gmail.com wrote:
On Wednesday, 29 May 2019 14:46:30 UTC+1, Phil Hobbs wrote:
On 5/29/19 2:16 AM, tabbypurr wrote:
On Wednesday, 29 May 2019 00:31:22 UTC+1, Phil Hobbs wrote:
On 5/28/19 5:09 PM, tabbypurr wrote:
On Tuesday, 28 May 2019 18:27:16 UTC+1, Phil Hobbs wrote:

Yup. All our threaded piping is NPT, precisely so you can torque
it till it doesn't leak. Why would anyone use a non-tapered pipe
thread? Is that really the standard over there?

Cheers

Phil Hobbs

I guess that's like asking why would anyone use an Edison plug. Some
things might be better changed but don't need to be, and there would
be a downside to doing so.

Well, Edison plugs don't leak a lot of electrons.

Hmm. You get a lot more electrical fires than we do.

Not so you'd notice. From net searches, it seems as though you folks
have about 6000-7000 electrical fires a year, and we have about 28000.
Since the US has about five times the population of the UK, we may even
be a bit ahead.

Cheers

Phil Hobbs

It seems you're right. Maybe wirenuts aren't as terrible as I thought. They've been banned here since the 50s.

Huh, what do you use if you have no wire nuts? For say ~10A house wiring?

George H.


NT

https://www.sparkydirect.com.au/p/30399/nls-30399-2-x-35mm-heavy-duty-double-screw-connect.html

https://www.sparkydirect.com.au/p/30007/nls-single-screw-insulated-electrical-connector-2.html

Holy crap! 50x the price of wire nuts!

looks like that single screw ones are 100pcs

I use the "Euro-style" terminal strips for wiring at work. 8 or 10
connection, two screw per, strips are about $6ea.

like these?
https://productimages.biltema.com/v1/Image/product/xlarge/2000017379/4

$6 sounds very expensive

It didn't make
sense but I didn't see the quantity in the title. Thanks for pointing
that out. How do you connect four or five wires together (common in
multi-gang switch boxes)?

seldom have to put wires together, most switches and outlets have holes
for two wires on each connection so you can chain them

 

[Phil Hobbs]

On 5/30/19 9:00 PM, krw@notreal.com wrote:

On Thu, 30 May 2019 16:39:59 -0400, Phil Hobbs
pcdhSpamMeSenseless@electrooptical.net> wrote:

On 5/30/19 6:16 AM, tabbypurr@gmail.com wrote:
On Wednesday, 29 May 2019 16:33:10 UTC+1, Phil Hobbs wrote:
On 5/29/19 11:17 AM, tabbypurr wrote:
On Wednesday, 29 May 2019 14:46:30 UTC+1, Phil Hobbs wrote:
On 5/29/19 2:16 AM, tabbypurr wrote:
On Wednesday, 29 May 2019 00:31:22 UTC+1, Phil Hobbs wrote:
On 5/28/19 5:09 PM, tabbypurr wrote:
On Tuesday, 28 May 2019 18:27:16 UTC+1, Phil Hobbs
wrote:

Yup. All our threaded piping is NPT, precisely so you
can torque it till it doesn't leak. Why would anyone
use a non-tapered pipe thread? Is that really the
standard over there?

Cheers

Phil Hobbs

I guess that's like asking why would anyone use an Edison
plug. Some things might be better changed but don't need
to be, and there would be a downside to doing so.

Well, Edison plugs don't leak a lot of electrons.

Hmm. You get a lot more electrical fires than we do.

Not so you'd notice. From net searches, it seems as though you
folks have about 6000-7000 electrical fires a year, and we have
about 28000. Since the US has about five times the population
of the UK, we may even be a bit ahead.

Cheers

Phil Hobbs

It seems you're right. Maybe wirenuts aren't as terrible as I
thought. They've been banned here since the 50s.


NT


Wire nuts are a disaster with aluminum wiring, but work well with
copper. Honking big ones with seventeen #14 conductors crammed in
them are another matter, but I don't think the code allows that
anyway. Two or three conductors, twisted tightly for at least 2 or
3 full turns, and then the nut holds them together and provides
additional gas-tight connections, a la wire wrap wire.

Cheers

Phil Hobbs

Ali wiring is its own pile of trouble. It's not permitted here,
though old installs are occasionally found.

Hasn't been used here in ages either AFAIK.

Not true. AL wiring is still allowed for point-to-point 220V wiring,
like ranges and dryers. All of the components are designed for AL
wiring, of course. Cost trumps safety, I guess. I've found a lot of
loose connections in these appliances.

Yikes. My joint has all oversized copper wiring, copper pipes, metal
junction boxes, 5/8" drywall, plywood sheathing, and so on. That's a
garden-variety 1960 raised-ranch house in NY. Mid-century modern rocks.

Cheers

Phil Hobbs

--
Dr Philip C D Hobbs
Principal Consultant
ElectroOptical Innovations LLC / Hobbs ElectroOptics
Optics, Electro-optics, Photonics, Analog Electronics
Briarcliff Manor NY 10510

http://electrooptical.net
http://hobbs-eo.com

 

On Thu, 30 May 2019 19:06:13 -0700 (PDT), Lasse Langwadt Christensen
<langwadt@fonz.dk> wrote:

fredag den 31. maj 2019 kl. 03.29.52 UTC+2 skrev k...@notreal.com:
On Thu, 30 May 2019 18:19:02 -0700 (PDT), Lasse Langwadt Christensen
langwadt@fonz.dk> wrote:

fredag den 31. maj 2019 kl. 03.05.10 UTC+2 skrev k...@notreal.com:
On Wed, 29 May 2019 19:14:18 -0700 (PDT), Chris <chris.863@live.com
wrote:

On Thursday, 30 May 2019 01:56:34 UTC+10, George Herold wrote:
On Wednesday, May 29, 2019 at 11:17:38 AM UTC-4, tabb...@gmail.com wrote:
On Wednesday, 29 May 2019 14:46:30 UTC+1, Phil Hobbs wrote:
On 5/29/19 2:16 AM, tabbypurr wrote:
On Wednesday, 29 May 2019 00:31:22 UTC+1, Phil Hobbs wrote:
On 5/28/19 5:09 PM, tabbypurr wrote:
On Tuesday, 28 May 2019 18:27:16 UTC+1, Phil Hobbs wrote:

Yup. All our threaded piping is NPT, precisely so you can torque
it till it doesn't leak. Why would anyone use a non-tapered pipe
thread? Is that really the standard over there?

Cheers

Phil Hobbs

I guess that's like asking why would anyone use an Edison plug. Some
things might be better changed but don't need to be, and there would
be a downside to doing so.

Well, Edison plugs don't leak a lot of electrons.

Hmm. You get a lot more electrical fires than we do.

Not so you'd notice. From net searches, it seems as though you folks
have about 6000-7000 electrical fires a year, and we have about 28000.
Since the US has about five times the population of the UK, we may even
be a bit ahead.

Cheers

Phil Hobbs

It seems you're right. Maybe wirenuts aren't as terrible as I thought. They've been banned here since the 50s.

Huh, what do you use if you have no wire nuts? For say ~10A house wiring?

George H.


NT

https://www.sparkydirect.com.au/p/30399/nls-30399-2-x-35mm-heavy-duty-double-screw-connect.html

https://www.sparkydirect.com.au/p/30007/nls-single-screw-insulated-electrical-connector-2.html

Holy crap! 50x the price of wire nuts!

looks like that single screw ones are 100pcs

I use the "Euro-style" terminal strips for wiring at work. 8 or 10
connection, two screw per, strips are about $6ea.

like these?
https://productimages.biltema.com/v1/Image/product/xlarge/2000017379/4

$6 sounds very expensive

Like that:
<https://www.digikey.com/product-detail/en/te-connectivity-amp-connectors/1776293-8/A107253-ND/1874903>

It didn't make
sense but I didn't see the quantity in the title. Thanks for pointing
that out. How do you connect four or five wires together (common in
multi-gang switch boxes)?

seldom have to put wires together, most switches and outlets have holes
for two wires on each connection so you can chain them

I *NEVER* use the stab connections. I will use the ones held by the
screw. I always use pigtails for the neutrals and grounds, as well. I
will daisy chain hots.

 

On Thu, 30 May 2019 22:43:35 -0400, Phil Hobbs
<pcdhSpamMeSenseless@electrooptical.net> wrote:

On 5/30/19 9:00 PM, krw@notreal.com wrote:
On Thu, 30 May 2019 16:39:59 -0400, Phil Hobbs
pcdhSpamMeSenseless@electrooptical.net> wrote:

On 5/30/19 6:16 AM, tabbypurr@gmail.com wrote:
On Wednesday, 29 May 2019 16:33:10 UTC+1, Phil Hobbs wrote:
On 5/29/19 11:17 AM, tabbypurr wrote:
On Wednesday, 29 May 2019 14:46:30 UTC+1, Phil Hobbs wrote:
On 5/29/19 2:16 AM, tabbypurr wrote:
On Wednesday, 29 May 2019 00:31:22 UTC+1, Phil Hobbs wrote:
On 5/28/19 5:09 PM, tabbypurr wrote:
On Tuesday, 28 May 2019 18:27:16 UTC+1, Phil Hobbs
wrote:

Yup. All our threaded piping is NPT, precisely so you
can torque it till it doesn't leak. Why would anyone
use a non-tapered pipe thread? Is that really the
standard over there?

Cheers

Phil Hobbs

I guess that's like asking why would anyone use an Edison
plug. Some things might be better changed but don't need
to be, and there would be a downside to doing so.

Well, Edison plugs don't leak a lot of electrons.

Hmm. You get a lot more electrical fires than we do.

Not so you'd notice. From net searches, it seems as though you
folks have about 6000-7000 electrical fires a year, and we have
about 28000. Since the US has about five times the population
of the UK, we may even be a bit ahead.

Cheers

Phil Hobbs

It seems you're right. Maybe wirenuts aren't as terrible as I
thought. They've been banned here since the 50s.


NT


Wire nuts are a disaster with aluminum wiring, but work well with
copper. Honking big ones with seventeen #14 conductors crammed in
them are another matter, but I don't think the code allows that
anyway. Two or three conductors, twisted tightly for at least 2 or
3 full turns, and then the nut holds them together and provides
additional gas-tight connections, a la wire wrap wire.

Cheers

Phil Hobbs

Ali wiring is its own pile of trouble. It's not permitted here,
though old installs are occasionally found.

Hasn't been used here in ages either AFAIK.

Not true. AL wiring is still allowed for point-to-point 220V wiring,
like ranges and dryers. All of the components are designed for AL
wiring, of course. Cost trumps safety, I guess. I've found a lot of
loose connections in these appliances.


Yikes. My joint has all oversized copper wiring, copper pipes, metal
junction boxes, 5/8" drywall, plywood sheathing, and so on. That's a
garden-variety 1960 raised-ranch house in NY. Mid-century modern rocks.

NY has always been really anal about wiring and plumbing, to the point
that it's illegal for homeowners to do their own work in most areas.
The '60s were prime times for AL wiring. Worse, mixed CU and AL,
without proper fixtures, even.

Mid-century modern is really nice visually but much of it was really
trash. Tri-levels can really look good but not so great for air
movement, for instance. Build quality, in those years, was often
pretty poor, too. Evidently you got lucky.