Circuit Protection Requirements
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- 240V heat pumps do not require GFCI [1] but 120V heat pumps do. NOT!
- That was prior to 2020, where 240V heat pumps now require GFCI [2]
- Water heater does not need AFCI. [https://currentelectricsystems.com/arc-fault-circuit-interrupter-afci-protection/#:~:text=According%20to%20current%20code%2C%20there,Exterior%20Receptacles%20and%20Lighting
- Water heater does not need GFCI. [3]