Alwayslearningelec
Senior Member
- Location
- NJ
- Occupation
- Estimator
What commonly happens with the neutral when it enters a non service disconnect switch? Does it get switched?
Disco Neutrals
- Thread starter Alwayslearningelec
- Start date
- Location
- New Jersey
- Occupation
- Journeyman Electrician (retired)
Neutral very rarely are switched. Does your application require a disconnection of the neutral?
Alwayslearningelec
Senior Member
- Location
- NJ
- Occupation
- Estimator
No I was just curious ..thanks
- Location
- New Jersey
- Occupation
- Journeyman Electrician (retired)
For a majority of installations the neutral will not be switched. The disconnect switch will have a solid neutral connection for the line and the load.
Alwayslearningelec
Senior Member
- Location
- NJ
- Occupation
- Estimator
Thank you
Strathead
Senior Member
- Location
- Ocala, Florida, USA
- Occupation
- Electrician/Estimator/Project Manager/Superintendent
Not to correct, but to clarify, having a solid neutral connection is optional and requires specific request when buying. And unless it is specified, there is nothing wrong with passing a neutral straight through, or splicing it together in the disconnect.
- Location
- New Jersey
- Occupation
- Journeyman Electrician (retired)
Yes you're correct, not all disconnect switches with a neutral require terminals for line and load connections. For us it was a common practice to order the switch with the solid neutral terminals.
Alwayslearningelec
Senior Member
- Location
- NJ
- Occupation
- Estimator
Solid neutral means it lands on something in the disco?
Since we are on the subject of switching neutrals. I had a co worker when we received the wrong order of single phase disconnects he didn’t want to wire nut neutral through but instead wanted to land it on the disconnect. He told me it will disconnect everything which i get but I’ve never seen anyone do this before. It was for 120 volt boilers.
qcroanoke
Sometimes I don't know if I'm the boxer or the bag
- Location
- Roanoke, VA.
- Occupation
- Sorta retired........
As long as you open all ungrounded conductors with the neutral it's ok.
But I'm not sure that code doesn't require the neutral to be last break/first make.
herding_cats
Senior Member
- Location
- Kansas
- Occupation
- Mechanical Engineer
Per NEC disconnects are not junctions or through ways, but this is an exception here. Rarely would you ever uncouple a neutral, but it does not hurt anything if you did for some reason. Having a split nut in a disco is fine here.
- Location
- Wisconsin
- Occupation
- PE (Retired) - Power Systems
It doesn't.
Switched grounded conductors are not unicorns. They are common in gas stations, in Corner-grounded delta motor circuits, and in some ATS schemes.