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Joined: Oct 2002
Posts: 830
S
Member
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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Joined: Mar 2003
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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

Last edited by Yoopersup; 02/05/08 07:22 PM.
Joined: Oct 2002
Posts: 830
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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

Joined: Mar 2007
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You should also look at 424.19. "Means Shall be provided to disconnect the heater,motor controller.... heating equipment from all ungrouded conductors.

Joined: Jun 2004
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Use a two pole motor rated switch; call it done.


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