424 – Fixed Electric Space-Heating Equipment

424.20(A) 424.20(A) – Thermostatically Controlled Switching Devices, Combination Thermostats, Manually Controlled Switches for Fixed Electric Space-Heating Equipment Thermostatically Controlled Switching Devices, Combination Thermostats, Manually Controlled Switches for Fixed Electric Space-Heating Equipment

Change at a Glance:

Revision requires thermostatically controlled switching devices and combination thermostats and manually controlled switches for fixed electric space-heating equipment to be located in an accessible location.

424.20 Thermostatically Controlled Switching Services. (Fixed Electric Space-Heating Equipment)

(A) Serving as Both Controllers and Disconnecting Means. Thermostatically controlled switching devices and combination thermostats and manually controlled switches shall be permitted to serve as both controllers and disconnecting means, provided they meet all of the following conditions:
(1) Provided with a marked “off ” position
(2) Directly open all ungrounded conductors when manually placed in the “off ” position
(3) Designed so that the circuit cannot be energized automatically after the device has been manually placed in the “off ” position
(4) Located as specified in 424.19
(5) Located in an accessible location