bonding

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delelcon

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i just completed a 200amp three phase service
and on inspection the inspector informed me that i needed lock nuts with lugs on all my out going pipes includeding the one the the meter can for bonding to the ground bar with is also bonded to the nuetral
now the panel is outside and on a refueling station for fuel oil but i've not had to do this before on a 120/240 service
any comments
 
Re: bonding

Originally posted by delelcon:
i just completed a 200amp three phase service
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What is the voltage, I assume that you have 120/208 WYE

Anyway, what you are talking about is a grounded bushing. That would be found in 250.92(B)
 
Re: bonding

Are any of the conduits serving classified areas? If so, the inspector is correct. See 501.30(A).
Don
 
Re: bonding

Originally posted by celtic:
Have some coffee... :D
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Thank you sir, make mine black. It WAS late when I posted that, I thought he was implying that he normally installs 1? and is now installing 3?, or did I miss somethin'? :confused:
 
Re: bonding

I even got the hazelnut creamer going, way ahead of you. :D

The OP might have just installed a 277/480, for all we know (not that it matters much). ;)
 
Re: bonding

Yep, but I dismissed that 'cause the fueling stations that I have done were all 120 volt. But... I have jumped to the wrong conclusions before. :p
 
Re: bonding

am I correct that, reagardless of voltage, 250.92 for the service conduits if applicable and 250.100 if its hazardous?
 
Re: bonding

250.100 Bonding in Hazardous (Classified) Locations
Regardless of the voltage of the electrical system, the electrical continuity of non?current-carrying metal parts of equipment, raceways, and other enclosures in any hazardous (classified) location as defined in Article 500 shall be ensured by any of the methods specified in 250.92(B)(2) through (B)(4) that are approved for the wiring method used. One or more of these bonding methods shall be used whether or not supplementary equipment grounding conductors are installed.
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501.30 Grounding and Bonding, Class I, Divisions 1 and 2
Wiring and equipment in Class I, Division 1 and 2 locations shall be grounded as specified in Article 250 and with the requirements in 501.30(A) and 501.30(B).
(A) Bonding The locknut-bushing and double-locknut types of contacts shall not be depended on for bonding purposes, but bonding jumpers with proper fittings or other approved means of bonding shall be used. Such means of bonding shall apply to all intervening raceways, fittings, boxes, enclosures, and so forth between Class I locations and the point of grounding for service equipment or point of grounding of a separately derived system.
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