ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals

Topic Options
Rate This Topic
#78833 - 10/27/01 07:31 PM Generator disconnect
lousen Offline
Junior Member
Registered: 07/21/01
Posts: 6
Loc: Bryn Mawr, Pa. U.S.A.
Does generator supply entering bldg. underground require a disconnect in bldg? Gen. is 80 feet from bldg.Gen. load 200kva at 208v.
Top
2017 / 2014 NEC & Related Books and Study Guides
#78834 - 10/28/01 03:20 AM Re: Generator disconnect
sparky Offline
Member
Registered: 10/18/00
Posts: 5303
Hi lousen!~
good Q
445.18 requires a disco for a genny, but does not specify where...
225-32, general rule , requires a disco. ex#1 could be applied.
If i'm reading this right (part 2 of 225) it matters if the genny serves the outbuilding or not.
others may clarify this better than I
Top
#78835 - 10/28/01 08:11 AM Re: Generator disconnect
Nick Offline
Member
Registered: 08/13/01
Posts: 599
Loc: Riverside, CA
As a general rule yes. See 225-31. As Sparky stated Ex #1 in 225-32 could be applied but this would have to be acceptable to the AHJ. I don’t believe many would be inclined to accept this.
Top
#78836 - 10/28/01 03:33 PM Re: Generator disconnect
sparky Offline
Member
Registered: 10/18/00
Posts: 5303
Lousen,
can you give us more info here? what is the genny used for? etc..
Top
#78837 - 10/28/01 07:03 PM Re: Generator disconnect
lousen Offline
Junior Member
Registered: 07/21/01
Posts: 6
Loc: Bryn Mawr, Pa. U.S.A.
Gen.set mentioned before supplys single owner nursing home.If I open main service disconnect in basement in a fire emergency, Gen. set kicks in.which means power is back on. Nearest disconnect is at Gen. set-80 feet away.This installation is completed but not inspected.
Top
#78838 - 10/29/01 03:40 AM Re: Generator disconnect
Geno Offline
Member
Registered: 08/27/01
Posts: 16
Loc: Syracuse, NY USA
The answer is yes you do need a disconnect within sight. Check out 700.12(B)(6) in the 2002 NEC.
Top

Member Spotlight
Member Since: 11/17/00
Posts: 2232
New in the Gallery:
SE cable question
Featured:

2017 NEC and Related
2017 NEC
Now Available!

Shout Box


Who's Online
1 registered (ghost307), 67 Guests and 11 Spiders online.
Key: Admin, Global Mod, Mod
 
New in the Gallery:
SE cable question
 
Top Posters (30 Days)
Admin 49
HotLine1 43
gfretwell 18
Ruben Rocha 12
Trumpy 9
 
Newest Members
Freecrowder, clee512, Jdscott2005, FAIZAN, Regitest2

ECN Electrical Forums - sponsored by Electrical Contractor Network - Electrical and Code Related Discussion for Electrical Contractors, Electricians, Inspectors, Instructors, Engineers and other related Professionals