Water Heater Disconnecting Means
Most electric water heaters are intended to be hard wired.
Water heater disconnecting means. 422 30 tells us that when an appliance is supplied by more then one source the disconnecting shall be grouped and identified. What are the disconnecting means requirements for a water heater. 1 panel within sight if the main electric panel or a subpanel that serves the water heater is within sight a second means of disconnect is not necessary.
Motors of motor operated appliances shall be provided with overload protection in accordance with part iii of article 430. Particular requirements for storage water heaters. If more than 50 feet away the locking means must remain at the disconnect whether a lock is installed on the water heater or not.
A means shall be provided to simultaneously disconnect each appliance from all ungrounded conductors in accordance with the following sections of part iii. If an appliance is supplied by more than one branch circuit or feeder these disconnecting means shall be grouped and identified as the appliance. The provision for locking or adding a lock to the disconnecting means must be on the switch or circuit breaker and remain in place with or without the.
Disconnecting means 422 30 general. Either way the unit must have a disconnecting means or a breaker lockout. Under the current code all water heaters require that there be a disconnect within sight or have provisions to install a lock on the switch or circuit breaker.
If panel with the branch circuit cb is within sight then it qualifies as the maintenance disconnect. As far as disconnecting means the mentioned cord and plug where permitted is permitted to be the disconnecting means or else you must have a disconnecting means withing sight of the appliance or a lockable branch circuit device if it is not within sight of the appliance. Water heaters either a storage tank type or tankless fall under the code section 422 appliances.
National electric code and local governing bodies heater and its individual shutoff valve must be disconnected from the gas supply piping system during doc viewer. If the switch or circuit breaker is capable of being locked in the open position it doesn t need to be within sight. Hermetic refrigerant motor compressors in air conditioning or refrigerating equipment shall be provided with overload protection in accordance with part vi of article 440.
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