Connecting neutral wires of different circuits

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electricalist said:
I think this thread has scarred me.
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As I read this thread I ascertained that one person posted about apple trees then someone else came along and posted about pine trees. The discussion bounced back and forth about the two trees until we have reached the point I think we should be discussing pineapples.

In a 120 volt circuit article 200 refers to the grounded conductor but in a multiwire circuit we have a conductor that carries the unbalanced load called the neutral. I think we need to first determine if we are discussing the ungrounded conductor or the neutral.

If this thread is not confusing enough I have just confused myself to the point of just sitting back and seeing where it goes now. :slaphead:
 
jwelectric said:
As I read this thread I ascertained that one person posted about apple trees then someone else came along and posted about pine trees. The discussion bounced back and forth about the two trees until we have reached the point I think we should be discussing pineapples.

In a 120 volt circuit article 200 refers to the grounded conductor but in a multiwire circuit we have a conductor that carries the unbalanced load called the neutral. I think we need to first determine if we are discussing the ungrounded conductor or the neutral.

If this thread is not confusing enough I have just confused myself to the point of just sitting back and seeing where it goes now. :slaphead:
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Your question was answered by the OP in post #38.
 
So my favorite scenario is when there’s a 4 gang with 4 sets of travelers going to another 4 gang and every neutral in each box are made up together.
My second favorite. Police dept call. All their computers burnt up. When I got there everything checked out good. They plugged in a couple new computer. Bam burnt up.
Circuit tracer led me to a cell where an inmate opened the neutral on a MWBC. Then put it back together. Then did it again. He thought it was hilarious.
I learned from pure stress and fear on that day how to properly work with neutrals.
A sheriff and 3 people under him followed my every move with question about why I can’t find the problem. Then in the end said great job we knew you get us back up and running. :blink:
 
electricalist said:
So my favorite scenario is when there’s a 4 gang with 4 sets of travelers going to another 4 gang and every neutral in each box are made up together.
My second favorite. Police dept call. All their computers burnt up. When I got there everything checked out good. They plugged in a couple new computer. Bam burnt up.
Circuit tracer led me to a cell where an inmate opened the neutral on a MWBC. Then put it back together. Then did it again. He thought it was hilarious.
I learned from pure stress and fear on that day how to properly work with neutrals.
A sheriff and 3 people under him followed my every move with question about why I can’t find the problem. Then in the end said great job we knew you get us back up and running. :blink:
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Yes, it must be quite the experience when your customer is packing 12 in the stack and one in the rack.
 
MAC702 said:
I guess that's the only place to see that in NJ. Around here I'm carrying 8+1 while I'm working. Most of my customers are networked from the shooting community, too.
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I've also done work in Nassau County on Long Island. Freak'n fire inspectors are armed. Because, you know, it's such a risky job. :roll:
 
My only response to "circuits and how many" as posted earlier would be to review how the NEC references the neutral in either single phase residential or 3 phase commercial installations and when they are counted as a current carrying conductor and when they are not considered current carrying.

I would suggest reviewing 310.15 (B)(5) 1-3
 
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