how to control current

[pil]

We have a huge problem at our house. The main cicuit breaker (60-amp) trips
all the time. This is because too many appliances are switched on inside the
house.

I need a circuit breaker that will switch off the geysers, ect when the
current exceeds 55amp.

Does such circuit breakers exist? Im interested in the ones that uses a ring
around the main power wire.

 

[John Fields]

On Wed, 7 Apr 2004 20:34:24 +0200, "pil" <pil@webmail.co.za> wrote:

We have a huge problem at our house. The main cicuit breaker (60-amp) trips
all the time. This is because too many appliances are switched on inside the
house.

I need a circuit breaker that will switch off the geysers, ect when the
current exceeds 55amp.

Does such circuit breakers exist? Im interested in the ones that uses a ring
around the main power wire.

---
What's a "geyser"?

And what's "ect"?

--
John Fields

 

[pil]

sorry. South African english.

geyser is used to heat water for showering, bathing, ect.

ect is used to indicate that there is more things that is similar to those
mentioned. like dogs can be bulldog, dobermann, labrador, bullterrior, ect.

Now you can help me with a english word. What is that thing called that you
clip around an electrical wire so that you can measure the current that
flows in it?

"John Fields" <jfields@austininstruments.com> wrote in message
news:38r870dlsokb0jim301qmq9ajifi4lq7ak@4ax.com...

On Wed, 7 Apr 2004 20:34:24 +0200, "pil" <pil@webmail.co.za> wrote:

We have a huge problem at our house. The main cicuit breaker (60-amp)
trips
all the time. This is because too many appliances are switched on inside
the
house.

I need a circuit breaker that will switch off the geysers, ect when the
current exceeds 55amp.

Does such circuit breakers exist? Im interested in the ones that uses a
ring
around the main power wire.

---
What's a "geyser"?

And what's "ect"?

--
John Fields

 

[Watson A.Name \"Watt Sun]

John Fields wrote:

On Wed, 7 Apr 2004 20:34:24 +0200, "pil" <pil@webmail.co.za> wrote:

We have a huge problem at our house. The main cicuit breaker (60-amp) trips
all the time. This is because too many appliances are switched on inside the
house.

I need a circuit breaker that will switch off the geysers, ect when the
current exceeds 55amp.

Does such circuit breakers exist? Im interested in the ones that uses a ring
around the main power wire.

---
What's a "geyser"?

And what's "ect"?

That 'ring' is a current transformer. Instead of that, why don't you
upgrade your AC supply to a heavier supply? It only makes sense,
instead of trying to prevent the breaker from being overloaded, which is
gonna eventually happen anyway as you add more appliances.

 

[Tim Auton]

"pil" <pil@webmail.co.za> wrote:

sorry. South African english.

geyser is used to heat water for showering, bathing, ect.

In the UK we'd call that an immersion heater. Unless it does it on
demand (as opposed to heating a storage tank), in which case it would
probably be called something else. The hot water part of a combination
boiler does on-demand water heating, but we mostly use gas here as the
North Sea is full of it. Anyway, that was probably useless
information.

ect is used to indicate that there is more things that is similar to those
mentioned. like dogs can be bulldog, dobermann, labrador, bullterrior, ect.

I think you mean etc. - the abbreviation (or is a contraction?) of the
Latin "et cetera", which means "and the rest", more or less.


Tim
--
Love is a travelator.

 

[John Popelish]

pil wrote:

We have a huge problem at our house. The main cicuit breaker (60-amp) trips
all the time. This is because too many appliances are switched on inside the
house.

I need a circuit breaker that will switch off the geysers, ect when the
current exceeds 55amp.

Does such circuit breakers exist? Im interested in the ones that uses a ring
around the main power wire.

I think the simplest solution would be to find a big power user that
you do not need at every moment (tank water heater, for instance) that
can be switched off by a relay (normally closed contacts) when some
other big but short time user (like an on demand heater) is switched
on. If you don't have such choices, then you need to start by
prioritizing the loads to decide what can be sacrificed before you go
to the trouble of building a control system.

--
John Popelish

 

[R. Steve Walz]

pil wrote:

sorry. South African english.

geyser is used to heat water for showering, bathing, ect.
-------------------

Oh, like a gas mantel wrapped with a coil, called a flash heater,
like an "Ascot" balanced flue in-wall instant water heater,
or similar.

ect is used to indicate that there is more things that is similar to those
mentioned. like dogs can be bulldog, dobermann, labrador, bullterrior, ect.
-------------------

You mean "etc.", comes from "et cetera", Latin for "and other-things".

Now you can help me with a english word. What is that thing called that you
clip around an electrical wire so that you can measure the current that
flows in it?
------------------------

Split-ring inductive transducer?

-Steve
--
-Steve Walz rstevew@armory.com ftp://ftp.armory.com/pub/user/rstevew
Electronics Site!! 1000's of Files and Dirs!! With Schematics Galore!!
http://www.armory.com/~rstevew or http://www.armory.com/~rstevew/Public

I need a circuit breaker that will switch off the geysers, ect when the
current exceeds 55amp.

Does such circuit breakers exist? Im interested in the ones that uses a
ring
around the main power wire.

---
What's a "geyser"?

And what's "ect"?

--
John Fields

 

[Rich Grise]

"R. Steve Walz" <rstevew@armory.com> wrote in message
news:4074DDE0.5747@armory.com...

pil wrote:
sorry. South African english.
....
Now you can help me with a english word. What is that thing called that
you
clip around an electrical wire so that you can measure the current that
flows in it?
------------------------
Split-ring inductive transducer?

-Steve

Current transformer?
Amprobe?
Clamp-on Ammeter?
Ground Fault Interrupter?
Hall Effect Device?
Current Shunt?

Cheers!
Rich

 

[pil]

"Watson A.Name "Watt Sun - the Dark Remover"" <NOSPAM@dslextreme.com> wrote
in message news:c520p3$6khqf$2@hades.csu.net...

John Fields wrote:

On Wed, 7 Apr 2004 20:34:24 +0200, "pil" <pil@webmail.co.za> wrote:


We have a huge problem at our house. The main cicuit breaker (60-amp)
trips
all the time. This is because too many appliances are switched on inside
the
house.

I need a circuit breaker that will switch off the geysers, ect when the
current exceeds 55amp.

Does such circuit breakers exist? Im interested in the ones that uses a
ring
around the main power wire.


---
What's a "geyser"?

And what's "ect"?

That 'ring' is a current transformer. Instead of that, why don't you
upgrade your AC supply to a heavier supply? It only makes sense,
instead of trying to prevent the breaker from being overloaded, which is
gonna eventually happen anyway as you add more appliances.

In south africa the maximum amperage that may be drawn from a house is
60Amp. So I am not allowed to use an 80amp breaker :-(

 

[pil]

"John Popelish" <jpopelish@rica.net> wrote in message
news:407494E3.D95551AB@rica.net...

pil wrote:

We have a huge problem at our house. The main cicuit breaker (60-amp)
trips
all the time. This is because too many appliances are switched on inside
the
house.

I need a circuit breaker that will switch off the geysers, ect when the
current exceeds 55amp.

Does such circuit breakers exist? Im interested in the ones that uses a
ring
around the main power wire.

I think the simplest solution would be to find a big power user that
you do not need at every moment (tank water heater, for instance) that
can be switched off by a relay (normally closed contacts) when some
other big but short time user (like an on demand heater) is switched
on. If you don't have such choices, then you need to start by
prioritizing the loads to decide what can be sacrificed before you go
to the trouble of building a control system.

--
John Popelish

Thanks for the relay idea. The devices that cause power failure is washing
machine, tumble drier, water heater, swimming pool pump. When two of these
are run at once and lights are on power fails.

The main problem with using relays is that the washing machine is too far
away from water heaters and pump so using a signal wire on that distance is
not really advisable.

How hard will it be to implement a current transformer into the main power
box? Then the water heaters and pump can simply be switched off when the
current exceeds a limit.