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#114961 - 07/23/03 09:25 AM Why is the cable taped?
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Loc: NY, USA
Submitted by Joe Tedesco:

Quote:
Why is the cable taped? This is in a kitchen in a hotel

Joe Tedesco www.JoeTedesco.com


[This message has been edited by Webmaster (edited 07-23-2003).]
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#114962 - 07/23/03 10:49 AM Re: Why is the cable taped?
ThinkGood Offline
Member
Registered: 08/07/02
Posts: 1084
Loc: Milwaukee, WI
Looks to me as though the correct connector was not used--it's meant for NM cable, not type AC or type MC. (Although, there are dual-purpose connectors, correct?)

Also, it's possible they didn't use a bushing ("redhead") which should be visible.

How is the box containing the GFCI receptacle supported, by the way?

Also, is the MC cable properly supported?
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#114963 - 07/23/03 02:18 PM Re: Why is the cable taped?
iwire Offline
Moderator
Registered: 01/05/03
Posts: 4343
Loc: North Attleboro, MA USA
This is something I get after coworkers about, although usually in larger sizes because the connector is not gripping the armor.

I agree with Think Good here.

Either they had no antishort bushing and used tape in place of it or they had an antishort bushing and needed tape to hold it in place due to the use of a NM connector.

When I tell coworkers not to do this they always will tell me that MC armor is not a grounding conductor and that the box is grounded by the insulated grounding conductor in the MC.

What they seem to overlook is that the armor is a metal raceway that needs to be bonded/grounded.
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#114964 - 07/23/03 02:51 PM Re: Why is the cable taped?
Gus1999 Offline
Member
Registered: 12/11/02
Posts: 25
Loc: Los Angeles, CA, USA
Couldn't find a IG GFCI?
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#114965 - 07/23/03 03:19 PM Re: Why is the cable taped?
Bjarney Offline
Moderator
Registered: 04/10/02
Posts: 2561
Loc: West-Southern Inner-Northeast ...
Must be one of those cutting-edge hepcat IG-Ultra systems there's been so much buzz about. ;-)

[Oops. That takes orange tape.]


[This message has been edited by Bjarney (edited 07-23-2003).]
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#114966 - 07/24/03 06:16 AM Re: Why is the cable taped?
PCBelarge Offline
Member
Registered: 06/08/03
Posts: 657
Loc: Dobbs Ferry, NY, USA
Hey! That tape for an IG is a great idea, wish I had thought of that. LOL!

Pierre
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Pierre Belarge
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#114967 - 07/24/03 10:29 AM Re: Why is the cable taped?
ThinkGood Offline
Member
Registered: 08/07/02
Posts: 1084
Loc: Milwaukee, WI
The screws don't appear to be nylon, though...
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#114968 - 07/27/03 11:26 AM Re: Why is the cable taped?
SvenNYC Offline
Member
Registered: 08/19/02
Posts: 1685
Loc: New York City
Yeah, that certainly doesn't seem to be a BX-type cable clamp. The ones I've seen in a certain DIY warehouse are roundish barrels with a set-screw to clamp on the metal jacket and a lock nut for the box.

The opening at the end where the wires exit is designed to hold the red bushing in place.

And yes. They're packed in clearly marked bags that have BX Connector or some such thing printed on them.
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#114969 - 07/27/03 05:43 PM Re: Why is the cable taped?
sparky Offline
Member
Registered: 10/18/00
Posts: 5545
i belive there still exists two-screw amored cable connectors on the market, although they have fallen out of vouge.

a redhead is debatable here, i believe it would depend on the conn. listing, but i'm unsure

the cable sheath here is not a grounding conductor, i would however prefer it grounded.
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#114970 - 07/27/03 06:48 PM Re: Why is the cable taped?
wa2ise Offline
Member
Registered: 11/29/02
Posts: 773
Loc: Oradell NJ USA
There's a kind of "BX" cable that has an aluminium sheath. Instructions and notes that come with it insist that you not use the "setscrew" clamps. But a style clamp that squeezes the sheath, similar to the clamp in the picture.

Anyone ever have the aluminium sheath to clamp connection fail when a serious fault current happened? I'd think you could get a bad connection due to corrosion of the aluminium.
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