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#51627 - 05/04/05 09:12 PM MC AND WHIPS  
kdrifter440  Offline
Member
Joined: Nov 2003
Posts: 22
Poughkeepsie
I HAVE TWO QUESTIONS.

1. IF WE ARE USING 5 FT WHIPS IN THE CEILING FROM BOX TO 2X4 LIGHT HOW OFTEN DO YOU HAVE TO STRAP OR SUPPORT IT?

2. HOW OFTEN DO YOU HAVE TO SUCURE MC IN WALLS? ITS IT 1 FOOT FROM BOX AND THEN EVERY 4 FEET?


Work Gear for Electricians and the Trades

#51628 - 05/04/05 10:25 PM Re: MC AND WHIPS  
Gregtaylor  Offline
Member
Joined: Mar 2005
Posts: 212
Boise, Idaho, USA
330.30 says type MC "shall be supported and secured at intervals not exceeding 6 ft."
330.30(B) says type MC "shall be permitted to be unsupported where the cable:
(1) ...
(2) Is not more than 6 ft. from the last point of support for connections within an accesible ceiling to luminaires or equipment.
330.30(C) says"....shall be secured within 12 inches of every box, cabinet, fitting or other cable termination.


#51629 - 05/05/05 10:14 PM Re: MC AND WHIPS  
Ryan_J  Offline
Moderator
Joined: Aug 2003
Posts: 1,374
West Jordan, Utah, USA
Ditto Greg's reply, add that after the 12" securing form the box, it must be secured every 6'.


Ryan Jackson,
Salt Lake City

#51630 - 05/06/05 09:46 AM Re: MC AND WHIPS  
kdrifter440  Offline
Member
Joined: Nov 2003
Posts: 22
Poughkeepsie
DOES THE MEAN A LIGHTING WHIP FIVE FEET LONG DOES NOT NEED TO BE STRAPED WITHIN ON FOOT OF BOX AND LIGHT?


#51631 - 05/06/05 01:51 PM Re: MC AND WHIPS  
DougW  Offline
Member
Joined: Jun 2003
Posts: 1,143
North Chicago, IL
330.30(B) says type MC "shall be permitted to be unsupported where the cable:
(1) ...
(2) Is not more than 6 ft. from the last point of support for connections within an accesible ceiling to luminaires or equipment.

Five feet is less than six, last time I looked [Linked Image]

Going to a luminaire or other single / dedicated piece of equipment, less than 6 is OK w/o support.

Using it to extend an existing wiring system? support within 12", then every 6' thereafter.

Your AHJ may have (sounds like does have) a different intepretation, but that's the one most of us are familiar with.

BTW, ALL CAPS is SHOUTING... [Linked Image]



[This message has been edited by DougW (edited 05-06-2005).]



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