The Electrical Contractor Network

ECN Electrical Forum
Discussion Forums for Electricians, Inspectors and Related Professionals

Books, Tools and Test Equipment for Electrical and Construction Trades

Topic Options
Rate This Topic
#111976 - 01/09/01 07:44 PM Switched Neutral
Admin Offline

Administrator
Member
Registered: 10/07/00
Posts: 3188
Loc: NY, USA
<p align="center"><img border="0" src="http://www.electrical-contractor.net/Violations/Submissions/SwitchedNeutral.jpg" width="403" height="259">
Submitted by sparky66wv (V. Kelly)
<p align="left">"This photo is of a switched neutral with the hot continuous through the box and unbroken and unspliced ... sort-of clever if you
ignore the switched neural part..."
Top
Tools for Electricians:
#111977 - 01/10/01 07:42 AM Re: Switched Neutral
sparky66wv Offline
Member
Registered: 11/17/00
Posts: 2342
Loc: West Virginia
Sorry Guys... a Polaroid Fun Flash just doesn't have the macro capability I need for close-ups. However, I think one can just make out the photo and see that the "romex" is one continuous piece, with the white wire broken for the switch.

Has anyone run into this before? (Not the switched neutral part, but the "continuous" part.) This is the third or fourth that I've seen in this area.
_________________________
-Virgil
Residential/Commercial Inspector
5 Star Inspections
Member IAEI
Top
#111978 - 01/10/01 09:06 AM Re: Switched Neutral
sparky66wv Offline
Member
Registered: 11/17/00
Posts: 2342
Loc: West Virginia
I also wanted to mention that a reasonably new Leviton brand 15A switch (complete with a ground screw and phillips type terminal screws) was removed from this before the photo was taken. Must've been changed within the last five years, my estimate.
_________________________
-Virgil
Residential/Commercial Inspector
5 Star Inspections
Member IAEI
Top
#111979 - 01/10/01 04:09 PM Re: Switched Neutral
Bill Addiss Offline
Member
Registered: 10/07/00
Posts: 4196
Loc: NY, USA
Sparky,

I've seen it once or twice myself. - I tried to clear up the photo a little, but that was the best I could do.
Top
#111980 - 01/19/01 03:38 PM Re: Switched Neutral
spkjpr Offline
Member
Registered: 12/01/00
Posts: 226
Loc: Sedalia,MO, USA
I have followed several older electricians here in MO who do the same style, although they broke the hot side, they split the Romex and place the switch in the line and leave the nuetral looped in the box. I spent 1/2 of a day trying to clean up a mess like that one day.
Top
#111981 - 03/03/01 12:04 AM Re: Switched Neutral
tajoch Offline
Member
Registered: 02/09/01
Posts: 53
Loc: Quinlan texas, usa
I haven't seen that one done in romex, But I have seen some stranded thhn, being used in the same manner.
Also on the switched neutral, Plant I am working at now, for some (roughly 1/3) of the motor controllers, they use the overload circuit to break the neutral and not the hot.... I seem to be the only one who finds this to be scary........
Top
#111982 - 03/03/01 06:40 AM Re: Switched Neutral
resqcapt19 Offline
Member
Registered: 11/10/00
Posts: 2209
Loc: IL
tajoch,
Almost all magnetic starters have the overlaod realy break the grounded conductor of the control power circuit to open the contactor. This is the industry standard. Starters that have the overload relay in the hot of the control circuit are special order. Why do see this as scary?
Don(resqcapt19)
_________________________
Don(resqcapt19)
Top
#111983 - 03/04/01 06:20 AM Re: Switched Neutral
electure Offline


Member
Registered: 12/24/00
Posts: 4229
Loc: Fullerton, CA USA
These are not necessarily grounded conductors. In the case of a 208, 240, or 480 volt coil this conductor is ungrounded. Also, there's an exception in NEC 250-21 (3), but these are fairly unlikely circumstances (d) If you want to change it, it can be accomplished with jumpers, and a material outlay of less than a dollar.
A potential hazard with the O/L contact switching the grounded wire is that if the wire from the contact to the coil (sometimes just a jumper, but often extends to other controls) becomes grounded, the circuit will not respond to the open contact. This can allow other devices on the same controls to run, and can destroy machinery and people.
(no more edits, sorry guys)
[This message has been edited by electure (edited 03-04-2001).]

[This message has been edited by electure (edited 03-04-2001).]
Top
#111984 - 03/23/01 05:30 PM Re: Switched Neutral
DHFansler Offline
Junior Member
Registered: 03/23/01
Posts: 7
Loc: Milan, OH USA
I see this often in OH... in homes 100+ years old and K/T (knob and tube). the old timers thought switched was switched. I thought they were all dead. I guess old bad habits never die.
Top

Featured:

2017 NEC and Related
2017 NEC
Now Available!

Shout Box

Recent Posts
Looking for older post
by sparkyinak
Today at 12:27 AM
License exam
by TRUE POWER
Yesterday at 11:33 PM
Members: Non-Members: Did you know?
by Admin
Yesterday at 02:34 PM
Safety at heights?
by HotLine1
01/21/17 08:51 PM
International Wire Colour Codes
by Texas_Ranger
01/21/17 03:29 PM

ECN Electrical Forums - sponsored by Electrical Contractor Network - Electrical and Code Related Discussion for Electrical Contractors, Electricians, Inspectors, Instructors, Engineers and other related Professionals