ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals
ECN Shout Chat
ShoutChat Box
Recent Posts
New tool
by gfretwell - 10/22/20 12:08 PM
Where is Everyone?
by Bill Addiss - 10/17/20 07:04 PM
Beyond Belief
by gfretwell - 09/27/20 12:03 AM
Questioning the electrical norms
by LongRunner - 09/23/20 06:38 AM
New in the Gallery:
Facebook follies, bad wiring
FPE in Germany pt.2
Who's Online Now
2 registered members (Scott35, gfretwell), 18 guests, and 4 spiders.
Key: Admin, Global Mod, Mod
Previous Thread
Next Thread
Print Thread
Rate Thread
Fixture wires #7246 01/26/02 02:18 PM
Joined: Aug 2001
Posts: 545
A
aldav53 Offline OP
Member
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
Re: Fixture wires #7247 01/26/02 02:26 PM
Joined: May 2001
Posts: 717
G
George Corron Offline
Member
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.


Featured:

2020 National Electrical Code
2020 National Electrical
Code (NEC)

* * * * * * *

2020 Master Electrician Exam Preparation Combos
2020 NEC Electrician
Exam Prep Combos:
Master / Journeyman

 

Member Spotlight
lil suzi
lil suzi
Midwest
Posts: 57
Joined: August 2003
Show All Member Profiles 
Top Posters(30 Days)
BigB 3
Popular Topics(Views)
270,731 Are you busy
204,964 Re: Forum
193,075 Need opinion
Powered by UBB.threads™ PHP Forum Software 7.7.3