Baseboard heaters no motors

[hhsting]

I have 750w 120V single phase baseboard heater in commercial setting has resistant element and no motors. I looked at NEC 2014 section 424.19 but I thin 424.19(A)(B) are for heater with motor either over 1/8 hp or without motor over 1/8 hp I.e has to have motor.

It is protected by breaker in panelboard not within sight and hard wired. Thermostat is not suitable for disconnect


What about for only resistive baseboard heater no motor does it need local disconnect within sight or panelboard breaker serve as disconnect?

 

[augie47]

Odd that the thermostat does not have an"off" position but ,if not, then 424.19(B)(1) would apply.

 

[Dennis Alwon]

Here is the option

424.19(B)(1) Heater Containing No Motor Rated over 1∕8 Horsepower.
The disconnecting means specified in 424.19 or unit switches
complying with 424.19(C) shall be permitted to serve as the
required disconnecting means for both the motor controller(s)
and heater under either of the following conditions:
(1) The disconnecting means provided is also within sight
from the motor controller(s) and the heater.
(2) The disconnecting means is lockable in accordance with
110.25.

 

[mopowr steve]

Odd that the thermostat does not have an"off" position but ,if not, then 424.19(B)(1) would apply.

If I recall, the single pole thermostats do not have “off “ just an extremely low setting where as the double pole version does have “off “position. One pole is actuated by temperature and the second pole microswitch is depressed at the off setting.

 

[LarryFine]

Seems like using a 2-pole T-stat is the easiest way to be sure.

 

[Eddie702]

Honeywell makes 1 pole stats, no off position digital stats. They are nice but can't serve as a disconnect. But they are much more accurate that the standard two pole