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#90495 11/23/04 04:13 PM
Joined: Feb 2004
Posts: 494
M
Member
Hi,
Is there ANY requirement in the NEC that requires a switch or disconnect to be Service Entrance rated?

Please quote the article if known.

Thanks for any replies.

-regards

Mustang

[This message has been edited by mustangelectric (edited 11-23-2004).]

2017 / 2014 NEC & Related Books and Study Guides
#90496 11/23/04 04:39 PM
Joined: Mar 2003
Posts: 21
C
Member
How about when it is used for SERVICE EQUIPMENT? I have always used a service equipment rated disconnect or enclosed breaker as the first throw on a service. Most discos that are not service equipment rated have no means of grounding the neutral.

#90497 11/23/04 04:40 PM
Joined: Oct 2000
Posts: 2,749
Member
2002 NEC See 230.66, 110.9 & 110.10


Joe Tedesco, NEC Consultant
#90498 11/23/04 05:05 PM
Joined: Oct 2000
Posts: 2,749
Member
Try discussing this question with the utility company. I was unable to find the name of the local electrical inspector.

Electric Department
Electric Utilities Manager
Rex Garrett
(479) 271-3135
rgarrett@bentonvillear.com

Electric Utilities Assistant Manager
Paul Kellenbarger
over Technical Design
(479) 271-3159
pkellenbarger@bentonvillear.com

Electric Utilities Assistant Manager
Donnie Johnson
over Construction
(479) 271-5985
djohnson@bentonvillear.com


Joe Tedesco, NEC Consultant
#90499 11/23/04 05:47 PM
Joined: May 2004
Posts: 162
C
Member
you might consider the requiremnt in 225 regarding the marking of equipment, in addition to those references previously mentioned

225.36 Suitable for Service Equipment.
The disconnecting means specified in 225.31 shall be suitable for use as service equipment.

Charlie

[This message has been edited by cpal (edited 11-23-2004).]

#90500 11/23/04 07:20 PM
Joined: Feb 2004
Posts: 494
M
Member
Hi,
Thanks for the replies. I should have said a SWITCH or DISCO used as the Main.

I appreciate the code references.

-regards

Mustang


[This message has been edited by mustangelectric (edited 11-23-2004).]

#90501 12/07/04 12:33 PM
Joined: Feb 2004
Posts: 494
M
Member
Hi,
I think Art 110.9 and 110.10 cover this.

Thanks

Mustang

#90502 12/08/04 01:21 AM
Joined: Mar 2001
Posts: 345
T
Member
225.31 Disconnecting Means.
Means shall be provided for disconnecting all ungrounded conductors that supply or pass through the building or structure.
225.36 Suitable for Service Equipment.
The disconnecting means specified in 225.31 shall be suitable for use as service equipment.
Exception: For garages and outbuildings on residential property, a snap switch or a set of 3-way or 4-way snap switches shall be permitted as the disconnecting means.

I would think that about covers it.
--
Tom Horne


Tom Horne

"This alternating current stuff is just a fad. It is much too dangerous for general use" Thomas Alva Edison
#90503 12/08/04 09:01 AM
Joined: Feb 2004
Posts: 494
M
Member
Hi,
Yes that would cover it. Why are inspectors so adamate about getting the SE rating of a disco sold to the public?

IS there a big counterfit market? Don't manufacturers have to meet this when they design these devices?

The inspector I am dealing with sent a comment letter asking to verify compliance with 110.9 and 110.10.

Thanks for pointing those out and the great replies.

-regards

Mustang


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