ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals
ECN Shout Chat
Top Posters(30 Days)
Trumpy 3
Recent Posts
Feed to spa panel
by sparkync. 06/23/17 11:16 AM
Weatherhead, POA, height?
by JimL. 06/23/17 12:07 AM
Windows 7 update problem
by ampherder. 06/21/17 07:01 AM
Norwegian power?
by dsk. 06/19/17 03:40 PM
Anyone ever take a Furnas A14D drum sw apart?
by gfretwell. 06/17/17 08:14 PM
New in the Gallery:
SE cable question
Popular Topics(Views)
238,159 Are you busy
173,326 Re: Forum
166,196 Need opinion
Who's Online Now
0 registered members (), 53 guests, and 11 spiders.
Key: Admin, Global Mod, Mod
Previous Thread
Next Thread
Print Thread
Rate This Thread
#173181 - 01/04/08 01:11 PM 30a 250v recept on 60amp breaker circuit portable  
crselectric  Offline
Member
Joined: Sep 2006
Posts: 133
albany, ca
I am trying to find whether or not in the code if I can tap off a 30amp 240v receptacle for a portable space heater in a commercial space onto an existing 60 amp circuit. This is in a large pottery studio, and this is for seasonal heating in berkeley california, and it would not be used at the same time as the kiln that the circuit supplies....but I could not find any ref. about multi outlet appl. circuits and ocp in 2005 nec? Chris


2017 / 2014 NEC & Related Books and Study Guides

#173183 - 01/04/08 01:35 PM Re: 30a 250v recept on 60amp breaker circuit portable [Re: crselectric]  
gfretwell  Offline


Member
Joined: Jul 2004
Posts: 9,083
Estero,Fl,usa
Table 210.21(B)(3)


Greg Fretwell

#173185 - 01/04/08 03:40 PM Re: 30a 250v recept on 60amp breaker circuit porta [Re: crselectric]  
BryanInBalt  Offline
Member
Joined: May 2007
Posts: 47
Baltimore
I am trying to find whether or not in the code if I can tap off a 30amp 240v receptacle for a portable space heater in a commercial space onto an existing 60 amp circuit.

If you change the breaker to a 30A wink

crs you ever get anyone to wire your Mom's house?


Design-Build isn't supposed to mean design *as* you build.

#173186 - 01/04/08 03:44 PM Re: 30a 250v recept on 60amp breaker circuit portable [Re: crselectric]  
KJay  Offline
Member
Joined: Nov 2007
Posts: 763
MA, USA
Also, don’t forget that since this is a branch circuit and not a feeder, the length of the #10 tap conductors would be limited to 18-inches by 210.19[A][4][c]. smile


#173187 - 01/04/08 04:50 PM Re: 30a 250v recept on 60amp breaker circuit portable [Re: KJay]  
KJay  Offline
Member
Joined: Nov 2007
Posts: 763
MA, USA
I should clarify that that the #10 taps will only work if you hardwire the heater. tired
Since you want add an additional receptacle, it must be the same rating as the branch circuit.


#173202 - 01/04/08 09:40 PM Re: 30a 250v recept on 60amp breaker circuit portable [Re: KJay]  
sparkyinak  Offline
Member
Joined: Jul 2007
Posts: 1,326
Alaska
The closets thing you can do and meet code is install a small subpanel then install 30 and 60 amp breaker. The hassel may not be worth it because of the clearence requirements for the panel.


"Live Awesome!" - Kevin Carosa

#173205 - 01/04/08 10:34 PM Re: 30a 250v recept on 60amp breaker circuit porta [Re: sparkyinak]  
gfretwell  Offline


Member
Joined: Jul 2004
Posts: 9,083
Estero,Fl,usa
You could also "tap" over to a water heater/HVAC type disconnect with a 30a OC device.


Greg Fretwell


Member Spotlight
MarkC10
MarkC10
CA, Inland Empire
Posts: 43
Joined: September 2013
Show All Member Profiles 
Featured:

2017 NEC and Related
2017 NEC
Now Available!

Shout Box
Powered by UBB.threads™ PHP Forum Software 7.6.0
Page Time: 0.017s Queries: 15 (0.005s) Memory: 0.7849 MB (Peak: 0.9405 MB) Zlib enabled. Server Time: 2017-06-23 17:15:40 UTC