ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals
ECN Shout Chat
Top Posters(30 Days)
Potseal 11
Recent Posts
600 KW 120/208 3 Phase Y protection
by Yooperup. 07/21/17 09:27 AM
1913 American Electrician's Handbook
by gfretwell. 07/20/17 01:08 PM
Green House wiring
by ghost307. 07/20/17 09:10 AM
Permit Snafus...AHJs and Contractors Jump in
by HotLine1. 07/18/17 08:06 PM
New in the Gallery:
SE cable question
Popular Topics(Views)
239,186 Are you busy
174,581 Re: Forum
167,018 Need opinion
Who's Online Now
0 registered members (), 39 guests, and 8 spiders.
Key: Admin, Global Mod, Mod
Previous Thread
Next Thread
Print Thread
Rate This Thread
#7246 - 01/26/02 02:18 PM Fixture wires  
aldav53  Offline
Member
Joined: Aug 2001
Posts: 545
Chandler, AZ USA
I often wondered why fixture wires (usually 18g or smaller) are allowed to be tied to a 15 or 20a ckt. Would'nt there be a potential for the hot wire heating up if it came in contact with ground before the circut had a chance to blow?


The Golden Rule - "The man with the gold makes the rule"

Work Gear for Electricians and the Trades

#7247 - 01/26/02 02:26 PM Re: Fixture wires  
George Corron  Offline
Member
Joined: May 2001
Posts: 717
Lorton, Va USA
Same principle as allowing your lamps to be fed with #18 or 20 zip cord. The load is definitely limited to the appliance (100 watt bulb, ballast, etc.)and there has been very little problem with any "hazard" associated.
Also, don't forget the ballasts are protected with a thermal element, so think of it like the 10 and 25 foot tap rule.

In the case of a fault, probably gonna burn itself clear before any real damage can occur, but that is why you have to be very cautious with fixtures above flammables.

For a piece of history, flourescents did not use to have Class P (Protected) ballasts when I came around the trade, and lotsa people would not allow them in their barns, houses, etc. because they had been known to cause fires.



Member Spotlight
mersadrad
mersadrad
Montreal, Quebec, Canada
Posts: 28
Joined: March 2011
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: 0.009s Queries: 14 (0.003s) Memory: 0.7432 MB (Peak: 0.8613 MB) Zlib enabled. Server Time: 2017-07-21 22:40:35 UTC