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

Topic Options
Rate This Topic
#100149 - 10/23/06 01:25 PM Multiple feeds
Steve T Offline
Member
Registered: 02/14/01
Posts: 306
Loc: Oak Park, IL, USA
Is it possible to have a circuit feed both a lighting panel and a rooftop RTU? I have a set of 4/0's protected at 200amp from an MDP that is split in a j-box, the 4/0's continue to feed a lighting panel and a set of 3/0's goes up to a rooftop RTU. I don't have all the details of the rtu disco, fusing etc, but assuming they were all rated properly, is this installation possible? Is this considered a tap?
Top
2017 / 2014 NEC & Related Books and Study Guides
#100150 - 10/23/06 01:33 PM Re: Multiple feeds
iwire Offline
Moderator
Registered: 01/05/03
Posts: 4391
Loc: North Attleboro, MA USA
It's not a 'tap' unless some of the conductors are rated less than the OCP protecting them.

It is sure a unusual set up but it could be code compliant if the load, conductors and overcurrent protection all match up properly.
_________________________
Bob Badger
Construction & Maintenance Electrician
Massachusetts
Top
#100151 - 10/23/06 03:01 PM Re: Multiple feeds
Steve T Offline
Member
Registered: 02/14/01
Posts: 306
Loc: Oak Park, IL, USA
Yeah--

Unfortunately, that's what I think too. But maybe forcing a detailed load calculation of the panel will convince them to do a separate run to the RTU. Sure hate to have to shut down lighting in half the place in order to work on the unit.

Thanks.
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 (sparkyinak), 57 Guests and 8 Spiders online.
Key: Admin, Global Mod, Mod
 
New in the Gallery:
SE cable question
 
Top Posters (30 Days)
Admin 47
HotLine1 43
gfretwell 19
Ruben Rocha 12
Trumpy 9
 
Newest Members
Scotto, Freecrowder, clee512, Jdscott2005, FAIZAN

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