ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals
ECN Shout Chat
Top Posters(30 Days)
Potseal 11
Recent Posts
Schneider LC1D09
by jraef. 04/28/17 11:05 PM
201 volt equipment?
by jraef. 04/28/17 10:49 PM
Permit Snafus...AHJs and Contractors Jump in
by sparky. 04/28/17 08:11 PM
Electrode boilers question
by annemarie1. 04/27/17 01:40 PM
Why cables look like they do
by LongRunner. 04/26/17 09:36 AM
New in the Gallery:
SE cable question
Popular Topics(Views)
234,906 Are you busy
169,708 Re: Forum
162,937 Need opinion
Who's Online Now
0 registered members (), 63 guests, and 9 spiders.
Key: Admin, Global Mod, Mod
Previous Thread
Next Thread
Print Thread
Rate This Thread
#96542 - 12/05/05 08:39 PM Lightbulb Clearance  
shortcircuit  Offline
Member
Joined: Jun 2004
Posts: 608
massachusetts
Is there a code requirement for the distance that a incandescent type A-lamp would be required to maintain from combustible surfaces such as wood?

For instance, if a 60watt A-lamp, screwed into a keyless lampholder in a basement of a dwelling, was within an inch of a wooden rafter, this would seem to be a hazard.

410.5 gives me some guidance, but is there any other clear guideline that would specify distances from combustible material for type A-lamps?

shortcircuit


2017 / 2014 NEC & Related Books and Study Guides

#96543 - 12/05/05 09:35 PM Re: Lightbulb Clearance  
renosteinke  Offline
Cat Servant
Member
Joined: Jan 2005
Posts: 5,316
Blue Collar Country
Depends on the bulb used...do you have a thermocouple handy?

If I remember correctly, industry standards set 140 degrees F as the maximum temperature a fixture can cause on a "flamable" surface.


#96544 - 12/05/05 10:17 PM Re: Lightbulb Clearance  
e57  Offline
Member
Joined: May 2003
Posts: 2,876
S.F.,CA USA
"within an inch of a wooden rafter, this would seem to be a hazard." - Yep....bulb to the side or below, I think it would be too close.


Mark Heller
"Well - I oughta....." -Jackie Gleason

#96545 - 12/05/05 11:00 PM Re: Lightbulb Clearance  
jwhite  Offline
Member
Joined: Dec 2005
Posts: 64
Trenton, NC, USA
410.5 Luminaires (Fixtures) Near Combustible Material.
Luminaires (fixtures) shall be constructed, installed, or
equipped with shades or guards so that combustible material
is not subjected to temperatures in excess of 90°C
(194°F).



Member Spotlight
Admin
Admin
NY, USA
Posts: 3,439
Joined: October 2000
Show All Member Profiles 
Featured:

2017 NEC and Related
2017 NEC
Now Available!

Shout Box
Powered by UBB.threads™ PHP Forum Software 7.6.0
Page Time: 0.010s Queries: 14 (0.003s) Memory: 0.7596 MB (Peak: 0.8909 MB) Zlib enabled. Server Time: 2017-04-29 03:43:51 UTC