Search the FAQ Archives

3 - A - B - C - D - E - F - G - H - I - J - K - L - M
N - O - P - Q - R - S - T - U - V - W - X - Y - Z
faqs.org - Internet FAQ Archives

Electrical Wiring FAQ (Part 2 of 2)
Section - Doorbell/telephone/cable other service wiring hints.

( Part1 - Part2 - Single Page )
[ Usenet FAQs | Web FAQs | Documents | RFC Index | Property taxes ]


Top Document: Electrical Wiring FAQ (Part 2 of 2)
Previous Document: How should I wire my shop?
Next Document: Underground Wiring
See reader questions & answers on this topic! - Help others by sharing your knowledge

	Auxiliary services, such as cable, telephone, doorbell, furnace
	control circuits etc. are generally considered to be "class 2"
	wiring by both the CEC and NEC.

	What this generally means is:

		1) class 2 and house power should not share conduit or
		   termination boxes.
		2) class 2 and house power should be 12" apart in walls
		   except where necessary.
		3) cross-over should be at 90 degrees.
	
	While the above may not be strictly necessary to the code, it
	is advantageous anyways - paralleling house power beside telephone
	lines tends to induce hum into the telephone.  Or could interfere
	with fancier furnace control systems.

	With telephone wiring, twisted pair can alleviate these problems,
	and there are new cable types that combine multiple services into
	one sheath.  Consult your inspector if you really want to violate
	the above recommendations.

User Contributions:

Dev
Report this comment as inappropriate
Dec 21, 2011 @ 12:00 am
In a fire protection circuit, circuts are shown witha no example 6,8,4etc. what it mean?these circuits are connected between smode detector,junction box etc
kevin
Report this comment as inappropriate
Dec 24, 2011 @ 12:12 pm
My daughter dropped a small necklace behind her dresser. The necklace crossed a plug terminal and shorted the receptacle.
I bought a new receptacle and installed the same. I still have no power I suspect there could be a bigger problem,this is aluminum wiring.
I've killed the breaker and call an electrician but am curious as to what happened.P.s. there is a dimmer switch on the same circuit.
dennis
Report this comment as inappropriate
Feb 24, 2012 @ 11:11 am
Regarding new construction wiring and running 12/2 and 14/3 wire in the same box.

I have multiple switches to lights. Ran 12/2 and 14/3 into switch box and inspector wrote correction needed.

What should I have done instead?

thank you
dennis
Robert
Report this comment as inappropriate
Nov 26, 2012 @ 9:21 pm
Does a grounding electrode facilitate the operation of a OCPD, to clear a ground fault ?
@dennis
Report this comment as inappropriate
Mar 18, 2013 @ 10:10 am
Assuming you are installing two switches in a two switch box, you probably should have used 14/2 and 14/3 instead of replacing 14/2 with 12/2. If you are only installing one switch in a one switch box, you should only have one cable in the box.
P k
Report this comment as inappropriate
Jan 26, 2014 @ 10:10 am
I prefer to use nothing smaller than12 awg /the smallest sized wire on a circuit determines the allowable ampacity
Ex: 15 amp-14awg. 12awg-20amp only rule for thumb other factors such as continuous load,heating and others if you do not know the safe NEC rules then please call a qualified journeyman Electrician better be safe

Comment about this article, ask questions, or add new information about this topic:

CAPTCHA




Top Document: Electrical Wiring FAQ (Part 2 of 2)
Previous Document: How should I wire my shop?
Next Document: Underground Wiring

Part1 - Part2 - Single Page

[ Usenet FAQs | Web FAQs | Documents | RFC Index ]

Send corrections/additions to the FAQ Maintainer:
clewis@ferret.ocunix.on.ca (Chris Lewis)





Last Update March 27 2014 @ 02:11 PM