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#174473 - 02/05/08 03:53 PM 5000 wt. ceiling hung heater disconnect??
sparkync Offline

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..

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#174475 - 02/05/08 04:11 PM Re: 5000 wt. ceiling hung heater disconnect?? [Re: sparkync]
Yoopersup Offline

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)

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

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

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

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.

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

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


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