2. The grounding terminals must be connected with the ground. Having paused circuit wiring emergently, please make sure that the check is effective. 1. Before wring, please make sure that the input power is off.The wring work should be operated by the professional electrical . 4. Do not do the voltage withstand test on the inverter. Please connect the brake resistor according to the wiring diagram. 3. Do not connect the output wire of the inverter with the shell, and pay attention that theoutput wire should not be short-circuited.. Please check whether the voltage of the AC main circuit power is consistent with the rated voltage of the inverter. 5. Do not connect the power to the U, V, W output terminals.. Do not connect the contactor with the output circuit., Weight: 2.20462262 Pounds, Manufacturer: Ehwisbe