The GMR-32B is engineered to detect several specific power supply irregularities:

: Dust or debris inside the unit can clog ventilation or cause internal arcing. Endless Sphere DIY EV Forum Key Maintenance Steps Check Voltage

: Prevents equipment from starting if the phase sequence is incorrect.

Secure these sampling wires only on the main incoming utility source side of your control panel. Never connect them downstream of a Variable Frequency Drive (VFD) or inverter, as artificial carrier waves will damage the monitoring sensor.

: Intermittent failures often stem from loose wiring at the terminals, creating artificial phase errors. Voltage Mismatch

A: Yes, but for inductive loads, you must add an external snubber (as mentioned in Section 4) and derate current by 20%.