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How do you know a new circuit breaker is protecting the circuit properly? BobH 12-01-2006
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Posted by hallerb@aol.com on December 1, 2006, 7:54 pm


> Right. You're not testing fuses.
> I assume your worked at Beaver, PA. Right? I used to know Donald C.
> Burnham in Mt. Lebanon.

yeah beaver a nice place wonderful workers. cafeteria was great!

I decided to not take the job, but it was a very close decision. kinda
far from home and a family member was ill at the time. Great
oppportunity at the time

I made a good decision within 3 years everyone with less than 20 years
was let go. part of the general Westinghouse fiancial mess from its
fiancial services division they lost a fortune. I worked in lots of
westinghouse plants east pittsburgh the mother plant, Large pa, some
fiancial offices:( others serviced the nuclear division I never got
cleared for that.

Sad what happened to westinghouse, today I service the blairsville
plant that makes nuclear fuel rods..........

I pass the beaver plant often, its owner has changed the parking lot
largely empty:(

some of the last automated equiptement was awesome watching it run.

they had robots delivering stuff.

I fixed opffice machines now all obsolete


Posted by Terry on December 1, 2006, 3:11 pm



>I am changing a 50-amp breaker to a 30-amp one to install an oven that
>draws less current than the old one did. I have seen information here
>about testing a bad circuit breaker, but how do you test a good one? In
>other words, if I install a new breaker, how do I know it will trip if
>the load exceeds 30 amps?

Will the plug go in a 50A recpt? If it does then I see no reason to
change it.

You would only have to change the breaker if you changed the outlet.

I think most receptacles are keyed somehow to keep you from using an
incorrect appliance.

You can plug a 15A device in a 20 Amp recpt, but you can not plug a
20A plug into a 15A recpt.


Posted by Steve Barker LT on December 1, 2006, 5:25 pm


I'd like to see a 20a plug. They're so few and far between, they might as
well obsolete them.

--
Steve Barker



>
>>I am changing a 50-amp breaker to a 30-amp one to install an oven that
>>draws less current than the old one did. I have seen information here
>>about testing a bad circuit breaker, but how do you test a good one? In
>>other words, if I install a new breaker, how do I know it will trip if
>>the load exceeds 30 amps?
>
> Will the plug go in a 50A recpt? If it does then I see no reason to
> change it.
>
> You would only have to change the breaker if you changed the outlet.
>
> I think most receptacles are keyed somehow to keep you from using an
> incorrect appliance.
>
> You can plug a 15A device in a 20 Amp recpt, but you can not plug a
> 20A plug into a 15A recpt.
>



Posted by Don Young on December 1, 2006, 9:59 pm



> I'd like to see a 20a plug. They're so few and far between, they might as
> well obsolete them.
>
> --
> Steve Barker
>
>
>
>>
>>>I am changing a 50-amp breaker to a 30-amp one to install an oven that
>>>draws less current than the old one did. I have seen information here
>>>about testing a bad circuit breaker, but how do you test a good one? In
>>>other words, if I install a new breaker, how do I know it will trip if
>>>the load exceeds 30 amps?
>>
>> Will the plug go in a 50A recpt? If it does then I see no reason to
>> change it.
>>
>> You would only have to change the breaker if you changed the outlet.
>>
>> I think most receptacles are keyed somehow to keep you from using an
>> incorrect appliance.
>>
>> You can plug a 15A device in a 20 Amp recpt, but you can not plug a
>> 20A plug into a 15A recpt.
>>
>
>
Some heaters and lots of airconditioners use 20 amp plugs. They are sold in
our local hardware stores.

Don Young



Posted by volts500 on December 1, 2006, 9:14 pm



BobH wrote:
> I am changing a 50-amp breaker to a 30-amp one to install an oven that
> draws less current than the old one did. I have seen information here
> about testing a bad circuit breaker, but how do you test a good one? In
> other words, if I install a new breaker, how do I know it will trip if
> the load exceeds 30 amps?

Connect it to a load that exceeds 30 amps.


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