ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals
ECN Shout Chat
Top Posters(30 Days)
Recent Posts
VFD MotorFeeders
by gfretwell. 10/19/17 01:02 AM
Generator Cable Sizing
by brsele. 10/18/17 07:39 PM
What do you do?
by gfretwell. 10/17/17 01:08 AM
Good ol' copper pipe in the fuse holder trick
by HotLine1. 10/16/17 07:16 PM
Another generator question
by HotLine1. 10/16/17 07:02 PM
New in the Gallery:
Gallery Test
Popular Topics(Views)
241,417 Are you busy
177,389 Re: Forum
168,990 Need opinion
Who's Online Now
0 registered members (), 25 guests, and 8 spiders.
Key: Admin, Global Mod, Mod
Previous Thread
Next Thread
Print Thread
Rate This Thread
#12269 - 08/05/02 05:43 PM Smallest 120v breaker available?  
CAB  Offline
Junior Member
Joined: Jul 2002
Posts: 6
Brooksville, FL, USA
I would like to reserve/dedicate an entire slot in a single phase 120v sub-panel for lighting of a small storage area even though the total load is much less than than a standard 20amp breaker. What is the smallest breaker available and in what increments are breakers available? What is the proper breaker for say a 750kW lighting load (1.25 factor is already included for continuous use). By the way, if it matters, this panel is a sub-panel for a 3-phase 120/208 400amp panel.

Thanx in advance.
christopher Banbury


Work Gear for Electricians and the Trades

#12270 - 08/05/02 10:51 PM Re: Smallest 120v breaker available?  
Electric Eagle  Offline
Member
Joined: Apr 2002
Posts: 914
Alpharetta, GA
Hello,
First I'll assume you mean 750 watts, not 750 KW. At 120 volts, 750 watts draws 6.25 amps. A 15 amp breaker with 14 gauge wire would be acceptable or a 20 amp breaker with 12 guage wire. Don't worry about trying to size the breaker to the exact load, just don't overload a circuit. BTW, if you did mean 750KW, you'll need to find a 6250 amp breaker and that's going to cost you [Linked Image]


#12271 - 08/06/02 08:37 AM Re: Smallest 120v breaker available?  
CAB  Offline
Junior Member
Joined: Jul 2002
Posts: 6
Brooksville, FL, USA
Thanx for the correction and the help. I did mean 750W in the example.
CAB



Member Spotlight
togol
togol
NW In. USA
Posts: 421
Joined: September 2005
Show All Member Profiles 
Featured:

2017 Master Electrician Exam Preparation Combos
2017 NEC Electrician
Exam Prep Combos:
Master / Journeyman

 

Shout Box
Powered by UBB.threads™ PHP Forum Software 7.6.0
Page Time: 0.011s Queries: 14 (0.003s) Memory: 0.7509 MB (Peak: 0.8734 MB) Zlib enabled. Server Time: 2017-10-21 01:13:13 UTC