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Old 02-12-2013, 06:17 PM   #21
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but....i like red heads! ~CS~

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Old 02-12-2013, 06:35 PM   #22
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For whatever reason I usually spin that bond wire back down the mc and put my connector right over it and let it pinch down on it.

Guess I learned different than all of you?
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Old 02-12-2013, 07:49 PM   #23
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I saw one manufacturer stated that both cutting the bond wire and wrapping it were approved when terminating BX. They even said it could be wrapped under or over the red head. I think it was on here that someone posted that.
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Old 02-12-2013, 08:17 PM   #24
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Quote:
Originally Posted by running dummy View Post
For whatever reason I usually spin that bond wire back down the mc and put my connector right over it and let it pinch down on it.

Guess I learned different than all of you?
You meant to say "AC"? People are easily confused when we don't use the proper terminology. MC doesn't have the bonding strip. And yes, they are to be wrapped back or cut flush with the jacket, not to be terminated, because it is not a conductor. It is part of the jacket assembly which allows it to be rated as an equipment grounding conductor. Without it, it is just BX cable. The jacket of which is not rated as an equipment ground.
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Old 02-12-2013, 11:40 PM   #25
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You don't need the red head for MC Cable.
I know. But it seems like tradition still dictates their use. I'll use one depending on how easy they are to find at the moment.
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Old 02-13-2013, 05:43 AM   #26
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I don't use red heads very often anymore. Most of the connectors we use have the red heads built in.
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Old 02-13-2013, 07:49 AM   #27
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What would you use BX for instead of MC? Is it cheaper?
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Old 02-13-2013, 09:13 AM   #28
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What would you use BX for instead of MC? Is it cheaper?
Is it still common in some locations to use the term BX? It hasn't been manufactured for years. AC has the bonding strip, MC has the full size ground and BX had neither. That's why it is extinct as the DoDo bird.
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Old 02-13-2013, 09:16 AM   #29
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What would you use BX for instead of MC? Is it cheaper?
You would think it would be cheaper because it doesn't have the extra 250' of wire in it. Not true. Simple economics. Supply vs demand.
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Old 02-13-2013, 04:52 PM   #30
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Is it still common in some locations to use the term BX? It hasn't been manufactured for years. AC has the bonding strip, MC has the full size ground and BX had neither. That's why it is extinct as the DoDo bird.
I've only dealt with MC, aluminum case with insulated ground conductor. Does AC have no ground conductor other than the case with bond wire? Is AC steel cased or aluminum? What are the different applications between them?
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Old 02-13-2013, 05:52 PM   #31
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I've only dealt with MC, aluminum case with insulated ground conductor. Does AC have no ground conductor other than the case with bond wire? Is AC steel cased or aluminum? What are the different applications between them?
Yes, AC has no ground conductor. The jacket in conjunction with the "bonding strip" serve as the egc. You can get both aluminum or steel jacket. Otherwise their applications are pretty much the same.

AC- http://www.southwire.com/products/ArmorliteTypeAC.htm

MC- http://www.southwire.com/products/ArmorliteTypeMC.htm

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