[AMRadio] 220 vac line

[w4awm at aol.com]

I have just been through this with the installation of new service panels at my home, cabin and cabin out building.  My electrician told me that if the installation of a 240V outlet is in an area that could be damp such as a garage, laundry room, basement, etc, the ground in addition to the neutral is required by NEC code. If you are using tool wire, you would use 2 black wires, for the hot side,  a green wire for ground and a white wire for neutral. In the case of romex, you would probably have a red, black, white and and a bare copper wire.  The red and black wires are hot, the white is neutral and the bare wire is ground. It makes sense to me that if you are installing a new outlet, it might be a good idea to go with the 4 wire installation.  That way if the code should change, you will most probably in compliance. 

As others have pointed out, neutran and ground wind up in the same place in the braker panel and in some new panels the 2 terminal strips are actually tied together at the factory.

73,

John,  W4AWM





-----Original Message-----
From: Bernie Doran <qedconsultants at embarqmail.com>
To: Discussion of AM Radio in the Amateur Service <amradio at mailman.qth.net>
Sent: Mon, Jul 25, 2011 5:01 am
Subject: Re: [AMRadio] 220 vac line


Hi Rick: if you are using a three wire receptacle, you have two 120 volt 
egs ( 240)  and a neutral, so run the Neutral( ground)  to the white buss, 
hey are the same if both connected together but it looks cleaner that way. 
est is to run to a four wire recptacle, with two  grounds back ( one 
eutral and one ground)
---- Original Message ----- 
rom: "Rick" <rickb at tx.rr.com>
o: "'Discussion of AM Radio in the Amateur Service'" 
amradio at mailman.qth.net>
ent: Sunday, July 24, 2011 9:43 PM
ubject: [AMRadio] 220 vac line

 I'm sure this has been discussed but my memory refuses to let the info go. 
 I
 am wiring a 220 VAC line into the new shack and I am uncertain about the
 neutral and ground wires. I installed a new sub panel complete with
 isolation buss bar for the neutral (white) wire from the 220 outlet. The 
 new
 sub panel has the neutral buss bar grounded to the main panel ground buss
 bar. This is the way I understand it is supposed to be. The outlet I am
 installing is a 20 amp 3 wire (two hot, one ground) unit. My concern is, 
 do
 I use the bare ground or the white neutral wire for the ground lug on the
 outlet? Also, do I simply leave the unused of the two (white or bare)
 disconnected in the new sub panel?

 Thanks for any assistance and advice.

 Rick / K5IAR

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