The Electrical Contractor Network

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

Books, Tools and Test Equipment for Electrical and Construction Trades

Register Now!

Register Now!

We want your input!

Featured:
   

2017 NEC and Related
2017 NEC
Now Available!

   
Recent Posts
Forum Software Upgrade coming soon...
by Webmaster
Today at 12:03 AM
Re: Fabricating Guards out of Lexan?
by frank
Yesterday at 04:11 PM
Would ELV branch circuits be a good idea?
by gfretwell
Yesterday at 01:26 PM
Why cables look like they do
by Texas_Ranger
Yesterday at 12:33 PM
100% breakers?
by Texas_Ranger
01/16/17 06:13 AM
New in the Gallery:
Desk-mounted "power-board"
Top Posters (30 Days)
Webmaster 20
HotLine1 19
gfretwell 13
Trumpy 12
ghost307 12
Who's Online
2 registered (HotLine1, Webmaster), 0 Guests and 208 Spiders online.
Key: Admin, Global Mod, Mod
Topic Options
Rate This Topic
#47905 - 01/29/05 01:57 PM Fixture wire connections
Norstarr Offline
Member

Registered: 09/25/04
Posts: 89
Loc: Wi
Does anybody know the thought behind the ul label on light fixtures requiring supply connections to be rated for at least 90 degrees? I know that it does not pertain to the wiring in the box mounted in the ceiling due to a code seminar I attended many many years ago but I do not remember the exact meaning for it. Does it apply to the wires connected to the sockets or what?
Thanks
Ron

Top
Work Gear for Electricians and the Trades

Work Gear for Electricians and the Trades
Work Gear for Electricians and the Trades
Arc Flash Clothing, Gloves, KneePads, Tool Belts, Pouches, Tool Carriers, etc. etc....

#47906 - 01/29/05 03:40 PM Re: Fixture wire connections
renosteinke Offline
Cat Servant
Member

Registered: 01/22/05
Posts: 5305
Loc: Blue Collar Country
The specification does, in fact, apply to the wires within the connection box.
When UL tests a fixture, temperature measurements are an important part of the testing. Where there might be a problem, UL will require that wires in the area be of a certain insulation, the fixture be marked "Not for use inside residences," etc.

Ordinary THHN qualifies as 90 degree wire, so there's not a problem. What do you do if the requirement is for, say, 105 degree wire? Well, you end up having another j-box a couple feet away, and running the expensive hi-temp wire those last few feet.

Top


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