"Solid Neutral"
- Thread starter bozosboss
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bphgravity
Senior Member
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- Florida
Re: "Solid Neutral"
Im not sure the term "solid neutral" is in the code. I do know the term "solidly grounded neutral" is.
In one sense, you could state that a solidly grounded neutral is one that is grounded through a means in which no current limiting device is used, like a resistor.
The way you describe "solid neutral", I would imply that it is a connectiong that is not switched.
Im not sure the term "solid neutral" is in the code. I do know the term "solidly grounded neutral" is.
In one sense, you could state that a solidly grounded neutral is one that is grounded through a means in which no current limiting device is used, like a resistor.
The way you describe "solid neutral", I would imply that it is a connectiong that is not switched.
Re: "Solid Neutral"
Yes, a solid "neutral" is one that is not switched as opposed to a switched "neutral".
Believe the most common application where you will encounter a switched "neutral" is at a gas station per 514.11(A).
Square D Digest #173 has a picture of one on page 6-11.
Yes, a solid "neutral" is one that is not switched as opposed to a switched "neutral".
Believe the most common application where you will encounter a switched "neutral" is at a gas station per 514.11(A).
Square D Digest #173 has a picture of one on page 6-11.
charlie
Senior Member
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Re: "Solid Neutral"
I wonder if it is used in contrast to 230.75?
I wonder if it is used in contrast to 230.75?
Re: "Solid Neutral"
Maybe I am incorrect on the term "solid neutral". I have seen a number of panel schedule drawings and vendor panel wiring diagrams that indicate "S/N". I was told, or assumed, this meant "solid neutral".
However, looking through a Crouse-Hinds catalog regarding their NEMA 3, 7 Class 1 Div. 2 , type D2PB Panelboards they describe their panelboards as being equipped with a "solid neutral".
I'm confused as to the meaning of the term. I did look through the NEC and could not find this term in regards to panelboard construction.
Maybe I am incorrect on the term "solid neutral". I have seen a number of panel schedule drawings and vendor panel wiring diagrams that indicate "S/N". I was told, or assumed, this meant "solid neutral".
However, looking through a Crouse-Hinds catalog regarding their NEMA 3, 7 Class 1 Div. 2 , type D2PB Panelboards they describe their panelboards as being equipped with a "solid neutral".
I'm confused as to the meaning of the term. I did look through the NEC and could not find this term in regards to panelboard construction.
bphgravity
Senior Member
- Location
- Florida
Re: "Solid Neutral"
I believe the term solid neutral used in context with a panelboard would be one that is a manufacturer assembled lug or bar on the panelboard, one that has no connection for a neutral ocnductor or possibly is switched.
I believe the term solid neutral used in context with a panelboard would be one that is a manufacturer assembled lug or bar on the panelboard, one that has no connection for a neutral ocnductor or possibly is switched.
Re: "Solid Neutral"
Solid neutral or S/N term has been around for years & shows up on panelboard dwgs. all the time. If it helps, think of it as "standard neutral".
Yes regular equipment has a solid "neutral". It is that particular switched neutral breaker that can be installed in it for 514.11(A) applications. The picture in the Digest is of one of those breakers in which the "lead" is from the line side of one pole. That lead connects to the regular solid neutral in the panelboard. The loadside "neutral" connects to the load lug on that pole. Again, a switched neutral or SW/N is a kind of special application.
Just the fact that you can loosen a set screw & pull the grounded conductor out of its lug, or lift the lug, meets 230.75 for a service panelboard. Service switchboard or service switchgear frequently has a removable bus bar or bus link to accomplish. There are cases when testing/troubleshooting, one needs the grounded conductor isolated, & in 99.44% of the time there is not a disc. means in the grounded conductor.
Solid neutral or S/N term has been around for years & shows up on panelboard dwgs. all the time. If it helps, think of it as "standard neutral".
Yes regular equipment has a solid "neutral". It is that particular switched neutral breaker that can be installed in it for 514.11(A) applications. The picture in the Digest is of one of those breakers in which the "lead" is from the line side of one pole. That lead connects to the regular solid neutral in the panelboard. The loadside "neutral" connects to the load lug on that pole. Again, a switched neutral or SW/N is a kind of special application.
Just the fact that you can loosen a set screw & pull the grounded conductor out of its lug, or lift the lug, meets 230.75 for a service panelboard. Service switchboard or service switchgear frequently has a removable bus bar or bus link to accomplish. There are cases when testing/troubleshooting, one needs the grounded conductor isolated, & in 99.44% of the time there is not a disc. means in the grounded conductor.
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