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#217833 - 12/08/16 07:17 PM Industrail Control Panel bonding per 409.108  
sparkyinak  Offline
Member
Joined: Jul 2007
Posts: 1,317
Alaska
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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#217834 - 12/09/16 05:42 PM Re: Industrail Control Panel bonding per 409.108 [Re: sparkyinak]  
HotLine1  Offline


Member
Joined: Apr 2002
Posts: 6,809
Brick, NJ USA
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

#217835 - 12/09/16 09:49 PM Re: Industrail Control Panel bonding per 409.108 [Re: sparkyinak]  
jraef  Offline
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Joined: Jul 2004
Posts: 95
San francisco, CA, USA
"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

#217836 - 12/09/16 10:29 PM Re: Industrail Control Panel bonding per 409.108 [Re: sparkyinak]  
sparkyinak  Offline
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Joined: Jul 2007
Posts: 1,317
Alaska
That's what I thought but I over thunked it. Thanx


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