The Electrical Contractor Network

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

Books, Tools and Test Equipment for Electrical and Construction Trades

   
Topic Options
Rate This Topic
#195178 - 07/14/10 11:00 PM 15 amp circuits commercial?
watersparkfalls Offline
Member
Registered: 03/08/05
Posts: 210
Loc: Washington...Not DC
I am looking at a plan for an auto parts store, it calls for lighting to be 20A ckts and gen outlets to be 15A, along with exhaust fans, printer ckt. Isn't there a code requiring all commercial lighting and plugs ckts to be 20 Amps? Or is that just how I've always done it?
Thanks guys,
H20


Edited by watersparkfalls (07/14/10 11:00 PM)
Top
2017 / 2014 NEC & Related Books and Study Guides
#195182 - 07/15/10 12:03 PM Re: 15 amp circuits commercial? [Re: watersparkfalls]
HotLine1 Offline


Member
Registered: 04/03/02
Posts: 6833
Loc: Brick, NJ USA
H2O:
There are no NEC requirements for 'general purpose' comm receptacles, spacing or ampacity.

However, you may have something in your local codes. Otherwise this is a design issue.

Now, talking about what I call "normal trade practices" comm work would be all #12 & 20 amp circuits; that's how I did it, but that's not NEC for GP circuits.

_________________________
John
Top
#195184 - 07/15/10 02:47 PM Re: 15 amp circuits commercial? [Re: HotLine1]
George Little Offline
Member
Registered: 01/18/04
Posts: 1492
Loc: Michigan USA
I would add to what John has said that using 15a. circuits for receptacles you will be looking at no more than 10 receptacles on a circuit (assume non-continuous), continuous load would only allow 8 receptacles on a 15a. circuit.
_________________________
George Little
Top
#195214 - 07/18/10 04:27 PM Re: 15 amp circuits commercial? [Re: George Little]
Tesla Offline
Member
Registered: 06/16/04
Posts: 1280
Loc: Sacramento, CA
With my AHJ...

#12 is the smallest conductor permitted in Commercial Construction -- to include Romex -- and to include motor loads.

With such a local rule -- no commercial design uses 15 Amp breakers normally. No cost savings are to be had -- instead you end up using more breakers and circuits to handle the total load.
_________________________
Tesla
Top

Featured:

2017 NEC and Related
2017 NEC
Now Available!

Shout Box

Recent Posts
License exam
by TRUE POWER
01/23/17 09:16 PM
Looking for older post
by sparkyinak
01/23/17 12:27 AM
Members: Non-Members: Did you know?
by Admin
01/22/17 02:34 PM
Safety at heights?
by HotLine1
01/21/17 08:51 PM
International Wire Colour Codes
by Texas_Ranger
01/21/17 03:29 PM

Who's Online
1 registered (Admin), 72 Guests and 12 Spiders online.
Key: Admin, Global Mod, Mod
New in the Gallery:
Desk-mounted "power-board"
Top Posters
gfretwell 9066
Trumpy 8560
pauluk 7693
HotLine1 6833
sparky 5545
Member Spotlight
Member Since: 11/11/05
Posts: 190

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