ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals
ECN Shout Chat
Top Posters(30 Days)
Potseal 11
Recent Posts
1913 American Electrician's Handbook
by gfretwell. 07/20/17 01:08 PM
600 KW 120/208 3 Phase Y protection
by gfretwell. 07/20/17 01:02 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)
239,175 Are you busy
174,570 Re: Forum
166,998 Need opinion
Who's Online Now
0 registered members (), 36 guests, and 6 spiders.
Key: Admin, Global Mod, Mod
Previous Thread
Next Thread
Print Thread
Rate This Thread
#23683 - 03/24/03 10:23 PM Old 3way switched neutrals  
Don Bonnet  Offline
Junior Member
Joined: Mar 2003
Posts: 2
Silver Spring, MD USA
Does anyone know where I can get a wiring diagram for the old "switched neutral" 3 way wiring?

Work Gear for Electricians and the Trades

#23684 - 03/25/03 08:34 AM Re: Old 3way switched neutrals  
wocolt  Offline
Joined: Dec 2002
Posts: 110
The ones I have seen, the power is at the fixture, and the switchleg is (as it would be normally) but the neutral is switched.
I am sure there are other schemes.


#23685 - 03/25/03 12:13 PM Re: Old 3way switched neutrals  
CTwireman  Offline
Joined: Feb 2002
Posts: 840
Connecticut, USA
Don, are you talking about the old "Chicago" Or Carter system 3 ways?


#23686 - 03/25/03 04:51 PM Re: Old 3way switched neutrals  
russ m  Offline
Joined: Feb 2003
Posts: 169
I'm not sure what you're looking for, but this is a illegal threeway.

Tie the hot to a traveler terminal, the neutral to a traveler terminal, run the common to the light. Do the same at the other switch. Both commons from each switch go to the light, hot and neutral run between switchs and are tied to the traveler terminals only.


[This message has been edited by russ m (edited 03-25-2003).]

#23687 - 03/25/03 06:41 PM Re: Old 3way switched neutrals  
zapped208  Offline
Joined: Feb 2003
Posts: 196
Somewhere in USA
This is what we here in the northeast call a HOT 3-way. Most common place you will find this type of 3-way set up is at dairy farms with a center pole service, and there is a set of floods on the pole and milk house. The 3-ways are fed at the house and from the barn panels. Russ M has the correct wiring of the 3-ways. The 3-ways MUST be fed from the same phase at house and barn. So when working on this type of set up, you must turn off power at house and the barn.

Shoot first, apologize later.....maybe

#23688 - 03/25/03 10:31 PM Re: Old 3way switched neutrals  
harold endean  Offline
Joined: Feb 2002
Posts: 2,233
Boonton, NJ

I e-mailed you 4 old diagrams out of an old wiring book. See if they can help you. I am not sure if I can post them here on ECN. I might try though.

Member Spotlight
Levittown, PA
Posts: 810
Joined: April 2004
Show All Member Profiles 

2017 NEC and Related
2017 NEC
Now Available!

Shout Box
Powered by UBB.threads™ PHP Forum Software 7.6.0
Page Time: 0.017s Queries: 14 (0.003s) Memory: 0.7747 MB (Peak: 0.9193 MB) Zlib enabled. Server Time: 2017-07-21 08:45:26 UTC