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Old 07-07-2012, 08:12 PM   #1
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Breaker types - THQL & BR


Howdy All,

We have a Westinghouse panel that calls for Westinghouse and / or Bryant type breakers, BD, BQ, BR, BQC, BRD, BRO, BRWH, BRSN, GFCB, GFEP, QPCGF, HQP, BRH, GFCBH, BJ, BJH.

Are any of those compatible with a GE type THQL breaker? Someone has thrown a few of them in the panel ... Do I need to replace 'em?

Is there a master interchange list somewhere?

Thanks,
Jim

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Old 07-07-2012, 08:14 PM   #2
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Breaker types - THQL & BR


If you don't see it on the list, the panel isn't rated for it.

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Old 07-08-2012, 12:17 AM   #3
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Breaker types - THQL & BR


THQL and BR breakers are not compatible. It's the mounting. If you notice, GE breakers sit awkwardly in a panel designed for BR breakers. This can cause a bad connection on the panel bus, and develop a "hot spot". The hot spot will - over time, burn out both the breaker and the panel bus -- at the point of connection.
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Old 07-08-2012, 12:30 AM   #4
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Breaker types - THQL & BR


Exactly what got me to checking the breakers! The breaker serving the furnace burnt out itself and the bus a couple years ago -I don't remember the brand or type, but it was physically different looking than the BR types in the panel. It was put in by the HVAC people. And I have a space which is now unusable.

I noticed today that the breaker serving the furnace (blower, air cleaner, and humidifier), was just slightly warm. Not hot, but warmer than the others. It was a GE and I started looking.

I swapped it with a BR before I started this thread. I'll keep watch on it for a few days and see how it fares with this heatwave.

Looks like that leaves me with three other GE breakers to get rid of!

Thanks all!
Jim
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Old 07-08-2012, 05:28 PM   #5
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Breaker types - THQL & BR


Thanks again everyone for replying to this thread. With the proper type of breaker installed, it's no longer warm! Picking up two double-pole breakers of the proper type tomorrow, and then I'll have all the wrong-brand stuff out of the panels!

Jim
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Old 07-09-2012, 12:33 AM   #6
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Breaker types - THQL & BR


...Way to go...! Simanco...

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