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Old 07-28-2012, 11:43 AM   #16
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Grounding question


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Originally Posted by Raym50 View Post
Great, thanks. Sorry to sound like a major idiot - but it sounds like so long as the screws are touching the metal box (which they are because the screws go into the metal box), then I'm good?
As long as the screws are metal. then yes, you are correct.

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Old 07-28-2012, 11:49 AM   #17
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Grounding question


The switch ground should be connected to the box.
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Old 07-28-2012, 11:50 AM   #18
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Grounding question


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The switch ground should be connected to the box.
Why? Check out 404.9 (B)(1)
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Old 07-28-2012, 12:06 PM   #19
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Grounding question


Very helpful, thank you! I have another question which I will start a new thread for...
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Old 07-28-2012, 12:47 PM   #20
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Grounding question


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YEP, AC type wiring, the outer jacket is the grounding conductor, which bonds the box.

Is that still code in the NEC.
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Old 07-28-2012, 12:49 PM   #21
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Grounding question


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Is that still code in the NEC.
Is what still code? Using the jacket of ac type cable as the equipment ground? Yes it is. This cable is still produced today. As long as it contains a #16 bonding strip, there is nothing wrong with this method.

Last edited by stickboy1375; 07-28-2012 at 12:52 PM.
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Old 07-28-2012, 02:05 PM   #22
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Grounding question


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Is what still code? Using the jacket of ac type cable as the equipment ground? Yes it is. This cable is still produced today. As long as it contains a #16 bonding strip, there is nothing wrong with this method.
So if it does not have a bonding strip can you use just the jacket for your bond.
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Old 07-28-2012, 02:30 PM   #23
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Grounding question


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Originally Posted by darren View Post
So if it does not have a bonding strip can you use just the jacket for your bond.
No, but that type of AC cable is not still made. Without a bonding strip the jacket cannot be used for grounding, and the cable is considered ungrounded.
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Old 07-28-2012, 02:33 PM   #24
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So if it does not have a bonding strip can you use just the jacket for your bond.
No, you can't.
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Old 07-28-2012, 02:57 PM   #25
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Grounding question


Ok that is what I thought, can you still by AC with a bonding strap.
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Old 07-28-2012, 02:58 PM   #26
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Grounding question


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Ok that is what I thought, can you still by AC with a bonding strap.
Absolutely.
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Answers based on the 2008 & 2011 NEC.
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Old 08-05-2012, 06:25 AM   #27
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Grounding question


I don't see an anti-short bushing:



in that last picture:



which suggests that this may have been an unpermitted, uninspected DYI wiring job.

If so, there may not be an appropriate, uninterrupted low-impedance ground path to all the outlet boxes.
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Last edited by Michael Thomas; 08-05-2012 at 06:27 AM.
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Old 08-05-2012, 07:54 AM   #28
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Grounding question


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Originally Posted by Michael Thomas View Post
I don't see an anti-short bushing:



in that last picture:



which suggests that this may have been an unpermitted, uninspected DYI wiring job.

If so, there may not be an appropriate, uninterrupted low-impedance ground path to all the outlet boxes.
The top picture you are showing is MC cable. Anti short bushing are not required for MC cable.
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Old 08-05-2012, 08:14 AM   #29
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Grounding question


No bushings are required on MC cable, but... it looks to me like there is a paper interior wrap around the conductors (the brown area) visible where they exit the connector, which would make that AC not MC (at least based on the materials I encounter).
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Last edited by Michael Thomas; 08-05-2012 at 08:19 AM.
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Old 08-05-2012, 08:20 AM   #30
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Grounding question


Quote:
Originally Posted by Michael Thomas View Post
which suggests that this may have been an unpermitted, uninspected DYI wiring job.
The surface mount box inside a wall gave that away to me.

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