[Johnson] AC Circuit Wiring Question

[Ed Tanton]

I turned the entire reference link below into a MicroSoft OneNote Note, and
hence can email it if anybody would like it. 5 graphical pages. Effectively
embedded-as opposed to attached like a PDF. Easier to send, nothing to open
except the email itself.

Ed Tanton
 
website: http://www.n4xy.com  
 
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-----Original Message-----
From: johnson-bounces at mailman.qth.net
[mailto:johnson-bounces at mailman.qth.net] On Behalf Of Ed Tanton
Sent: Monday, May 28, 2012 8:47 PM
To: 'Tom Bates'; EF Johnson Reflector
Subject: Re: [Johnson] AC Circuit Wiring Question

I would like to be sure I understand (or learn correctly) what we are
saying:

	1) The white neutral wire should not be connected except as 1/2 the
leg for 120VAC fans? Or do they go from 1/2 leg to ground?
	2) The ground wire IS connected to ground;
	3) The 220VAC is on the remaining two wires-120VAC/side-I found a
pretty good set of drawings at:

http://www.do-it-yourself-help.com/wiring_receptacles.html  

Ed Tanton
 
website: http://www.n4xy.com  
 
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Norton AntiVirus with AutoProtect 

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Wag more / Bark less
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///snip

>>What is done with current appliances, stoves, dryers, etc.? 

Probably an understading of the terms for the conductors would be helpful.

When one speaks of the "neutral" conductor, he is referring to a current
carrying conductor.  This would also be the "identified" conductor or
"white" wire, and is "grounded" to earth back at the service.  That's also
why it is called the "grounded" conductor.   In years past, the Natl
Electrical Code allowed the bare stranded conductor on some cables to be
used as both a "grounded" neutral conductor and also a "groundING" conductor
on some 120/240 3 wire circuits (very commonly seen as 30Amp 3 wire plug on
dryers and welders and 50 Amp 3 wire plug on electric stoves).  Now days, a
4 wire plug is required on those split circuits.  That's those circuits
(like a clothes dryer) that utilize 240 Volts for the heating elements and
120 Volts for the motor and controls.

So, simply put--The neutral or ground-ED  wire is normally a white insulated
current carrying conductor while the ground-ING wire (usually insulated
green or bare) is used as a safety wire connecting equipment metalliac parts
directly to ground and only carries current if there is a fault.


Take Care,

Tom  -  AA1NZ

///snip

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