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5000 wt. ceiling hung heater disconnect?? #174473
02/05/08 07:53 PM
02/05/08 07:53 PM
S
sparkync  Offline OP
Member
Joined: Oct 2002
Posts: 830
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..

2017 / 2014 NEC & Related Books and Study Guides
Re: 5000 wt. ceiling hung heater disconnect?? [Re: sparkync] #174475
02/05/08 08:11 PM
02/05/08 08:11 PM
Y
Yoopersup  Offline
Member
Joined: Mar 2003
Posts: 849
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

Last edited by Yoopersup; 02/05/08 08:22 PM.
Re: 5000 wt. ceiling hung heater disconnect?? [Re: Yoopersup] #174477
02/05/08 08:42 PM
02/05/08 08:42 PM
S
sparkync  Offline OP
Member
Joined: Oct 2002
Posts: 830
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

Re: 5000 wt. ceiling hung heater disconnect?? [Re: sparkync] #177480
05/04/08 10:37 AM
05/04/08 10:37 AM
M
mikethebull  Offline
Member
Joined: Mar 2007
Posts: 101
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.

Re: 5000 wt. ceiling hung heater disconnect?? [Re: mikethebull] #177702
05/10/08 12:16 PM
05/10/08 12:16 PM
T
Tesla  Offline
Member
Joined: Jun 2004
Posts: 1,273
Sacramento, CA
Use a two pole motor rated switch; call it done.


Tesla

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