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Industrail Control Panel bonding per 409.108 #217833 12/08/16 07:17 PM
Joined: Jul 2007
Posts: 1,335
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sparkyinak Offline OP
Member
I may have over think this but I'd rather be safe than sorry. Per 409.108, a bonding main shall be provided when used as service equipment. Am I presuming that this applies only when there's separately derived neutral involved like a. Control transformer? I may be overthinking that with a service switch in the enclosure for the sole purpose of disconnecting the power to the panel and equipment does not constitute as "service equipment" by difinition per NEC. Am I missing something here or am I just missing sleep since I can't wrap my brain around this? Oui vey.....


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Re: Industrail Control Panel bonding per 409.108 [Re: sparkyinak] #217834 12/09/16 05:42 PM
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HotLine1 Offline
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Sounds like you are wasting gray matter.

IF this is 'service equipment' then you must follow 409.108, if not service equipment.....proceed as usual.


John
Re: Industrail Control Panel bonding per 409.108 [Re: sparkyinak] #217835 12/09/16 09:49 PM
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jraef Offline
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"Service Equipment" as defined by being the thing connected to your meter. The rule is there mainly for things like Pumping Plant panels where there is a utility service drop right into a meter, then into the control panel itself. That makes the control panel the Service Equipment, so it needs to follow those rules.

And be labeled / listed as S.U.S.E. by the way.


JRaef
Re: Industrail Control Panel bonding per 409.108 [Re: sparkyinak] #217836 12/09/16 10:29 PM
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sparkyinak Offline OP
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That's what I thought but I over thunked it. Thanx


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