ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals

Topic Options
Rate This Topic
#188420 - 08/07/09 04:58 PM Sign Disconnect
George Little Offline
Member
Registered: 01/18/04
Posts: 1488
Loc: Michigan USA
Article 600.6 ask for a disconnect for a sign. If a sign builder installs a switch as an integral part of the sigh does this satisfy the requirement? One must realize that the UL standard does not require a disconnect as part of the requirements for sign construction.
_________________________
George Little
Top
2017 / 2014 NEC & Related Books and Study Guides
#188422 - 08/07/09 06:25 PM Re: Sign Disconnect [Re: George Little]
gfretwell Offline


Member
Registered: 07/20/04
Posts: 9036
Loc: Estero,Fl,usa
If it was at the circuit entry into the sign, disconnected all ungrounded conductors and was marked as the disconnect with an "off" position I would allow it.
_________________________
Greg Fretwell
Top
#188451 - 08/09/09 04:29 PM Re: Sign Disconnect [Re: gfretwell]
luckyshadow Offline
Member
Registered: 01/04/05
Posts: 305
Loc: Maryland USA
yes a factory installed disconnecting switch that disconnects all ungrounded conductors is allowed
Top
#188489 - 08/11/09 01:57 PM Re: Sign Disconnect [Re: luckyshadow]
George Little Offline
Member
Registered: 01/18/04
Posts: 1488
Loc: Michigan USA
I guess I left out a very key point. The branch circuit enters the back of the sign enclosure, travels through the sign and then exits the sign to terminate on the line side of a WP switch mounted on the sign. The load side of the switch has conductors that re-enter the sign enclosure and connect up to the Xformer of the sign. I feel that this a violation of 600.6 since the switch does not disconnect all un-grounded conductors in the sign. What do you think?
_________________________
George Little
Top
#188494 - 08/11/09 04:36 PM Re: Sign Disconnect [Re: George Little]
gfretwell Offline


Member
Registered: 07/20/04
Posts: 9036
Loc: Estero,Fl,usa
Note I said "at the circuit entry into the sign". I agree with you, either move the disconnect to the conduit entry point or change where the conduit enters to make it next to the switch, preferably in a separate enclosure within the sign.
This could be as simple as a 4x4 deep ring that covered the switch terminals and conduit entry with a blank cover on the other side.
I believe the purpose of the disconnect is to make the interior of the equipment safe. I am not making a proposal but I do think a label over the disconnect enclosure saying something like "line voltage present with disconnect off" is a good idea.
_________________________
Greg Fretwell
Top

Member Spotlight
Member Since: 07/05/02
Posts: 8211
New in the Gallery:
SE cable question
Featured:

2017 NEC and Related
2017 NEC
Now Available!

Shout Box


Who's Online
0 registered (), 44 Guests and 20 Spiders online.
Key: Admin, Global Mod, Mod
 
New in the Gallery:
SE cable question
 
Top Posters (30 Days)
Admin 51
HotLine1 43
gfretwell 17
Trumpy 16
Ruben Rocha 13
 
Newest Members
clee512, Jdscott2005, FAIZAN, Regitest2, sureshazhagai

ECN Electrical Forums - sponsored by Electrical Contractor Network - Electrical and Code Related Discussion for Electrical Contractors, Electricians, Inspectors, Instructors, Engineers and other related Professionals