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

Register Now!

Register Now!

We want your input!

Featured:
   

2017 NEC and Related
2017 NEC
Now Available!

   
Recent Posts
230 or 345 kV transmission lines?
by Vlado
09/24/16 09:33 AM
breaker meltdown
by crselectric
09/24/16 12:42 AM
Electrical mast flashing product
by ThomasWinfrey
09/22/16 12:14 AM
What estimating software do you recommend?
by sparky
09/21/16 07:20 PM
"Dry Run" Inspection goes awry
by HotLine1
09/20/16 07:39 PM
New in the Gallery:
12.5A through 0.75mm˛ flex (just out of curiosity)
Shout Box

Top Posters (30 Days)
HotLine1 15
sparky 9
gfretwell 8
sparky66wv 8
Vlado 6
Who's Online
0 registered (), 295 Guests and 4 Spiders online.
Key: Admin, Global Mod, Mod
Topic Options
Rate This Topic
#174473 - 02/05/08 03:53 PM 5000 wt. ceiling hung heater disconnect??
sparkync Offline
Member

Registered: 10/17/02
Posts: 811
Loc: NC
I'm looking in the code and haven't been able to establish if a ceiling hung electric heater needs to have a disconnect "in site of the unit" or not, or if the on/off control can be used as the disconnect. There seems to be a lot of "variables" here that I don't have the information for. Just bidding a job, and the heater the homeowner says he going to install, don't have the technical information posted on the site I pulled up ( hp, etc.) though I do know the voltage is 240 volts and load is 5000 wts. I intend on figuring one in anyway, since it's not going to be very much, but I would like to be able to tell the homeowner something definite by the code.I appreciate your help. Thanks, Steve..

Top
2014 / 2011 NEC & Related Books and Study Guides
#174475 - 02/05/08 04:11 PM Re: 5000 wt. ceiling hung heater disconnect?? [Re: sparkync]
Yoopersup Offline
Member

Registered: 03/04/03
Posts: 826
Loc: Michigan
The Theromstat Must be within sight and a Two pole Rated for the proper amp. With a OFF position to be classified at a disconnect switch.
424.20 NEC 2005


Edited by Yoopersup (02/05/08 04:22 PM)

Top
#174477 - 02/05/08 04:42 PM Re: 5000 wt. ceiling hung heater disconnect?? [Re: Yoopersup]
sparkync Offline
Member

Registered: 10/17/02
Posts: 811
Loc: NC
Thanks for the reply. I'll take one just in case ( if I get the job:) I don't know yet whether the built in thermostat is designated "on/off" or not, though I imagine it is. I've only seen the baseboard type that don't have a "on/off", though I could be wrong. Thanks....Steve

Top
#177480 - 05/04/08 07:37 AM Re: 5000 wt. ceiling hung heater disconnect?? [Re: sparkync]
mikethebull Offline
Member

Registered: 03/18/07
Posts: 101
Loc: Rhode Island
You should also look at 424.19. "Means Shall be provided to disconnect the heater,motor controller.... heating equipment from all ungrouded conductors.

Top
#177702 - 05/10/08 09:16 AM Re: 5000 wt. ceiling hung heater disconnect?? [Re: mikethebull]
Tesla Offline
Member

Registered: 06/16/04
Posts: 1280
Loc: Sacramento, CA
Use a two pole motor rated switch; call it done.
_________________________
Tesla

Top



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