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Old 07-16-2008, 10:24 AM   #16
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How is this subpanel ground?


It looks like a blue, a red, and a white enter the panel from the BX. With the blue used for the grounded conductor, I wonder what the white does? I'm not familiar with this panel and my eyes are getting old, are the other breakers tandems or single pole? I noticed three on the top row.

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Old 07-16-2008, 11:12 AM   #17
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How is this subpanel ground?


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Originally Posted by jrclen View Post
It looks like a blue, a red, and a white enter the panel from the BX. With the blue used for the grounded conductor, I wonder what the white does? I'm not familiar with this panel and my eyes are getting old, are the other breakers tandems or single pole? I noticed three on the top row.
Hi John

The breakers you are referring to are GE THQP's. They are single pole half size breakers. GE's answer for a tandem breaker. If you look at the exposed bus stabs you will notice little tabs on the side of the stab. There are two on each side. This allows two 1/2" thqp's to be installed on each stab filling a full size 1" space. GE's THQL breaker is a full size breaker and it will also fit this panel. Alternately a double pole handle tied thqp ( 2 thqp's factory tied ) can be used in this panel but you must insert it between stabs so that it catches a tab on different legs.

The white wire appears to be a grounded leg.

Last edited by Stubbie; 07-16-2008 at 11:15 AM.
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Old 07-16-2008, 07:41 PM   #18
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How is this subpanel ground?


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Hi John

The breakers you are referring to are GE THQP's. They are single pole half size breakers. GE's answer for a tandem breaker. If you look at the exposed bus stabs you will notice little tabs on the side of the stab. There are two on each side. This allows two 1/2" thqp's to be installed on each stab filling a full size 1" space. GE's THQL breaker is a full size breaker and it will also fit this panel. Alternately a double pole handle tied thqp ( 2 thqp's factory tied ) can be used in this panel but you must insert it between stabs so that it catches a tab on different legs.

The white wire appears to be a grounded leg.
Thanks Stubbie. So the grey breakers are full size AFCI? I have no experience with AFCI's yet as they are not required here. Are they connected like a GFCI? I can't figure out the wiring. If the blue is the grounded conductor, wouldn't the additional white grounded conductor cause problems? I'd like to see the connections on a receptacle if the OP is still around.
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Old 07-16-2008, 08:03 PM   #19
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How is this subpanel ground?


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Thanks Stubbie. So the grey breakers are full size AFCI? I have no experience with AFCI's yet as they are not required here. Are they connected like a GFCI? I can't figure out the wiring. If the blue is the grounded conductor, wouldn't the additional white grounded conductor cause problems? I'd like to see the connections on a receptacle if the OP is still around.
Yes, the gray breakers are AFCI's. and they get wired just like GFCI's... I figured out what they did too, they used 4 conductor cable, they used blk, and white for one circuit, and blue and red for a AFCI circuit... pretty smart but illegal...
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Old 07-17-2008, 09:31 AM   #20
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How is this subpanel ground?


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Yes, the gray breakers are AFCI's. and they get wired just like GFCI's... I figured out what they did too, they used 4 conductor cable, they used blk, and white for one circuit, and blue and red for a AFCI circuit... pretty smart but illegal...
Ok, that I can at least understand. Thanks.

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