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CAN I USE GND EARTH INSTEAD OF NEUTRAL

Question asked by arshdeep on Dec 5, 2018
Latest reply on Dec 7, 2018 by chiefns830

Hi All,

 

I am making a 3 Phase power meter using a MICROCHIP IC ATM90E36A. They recommend to use neutral wire as a GND reference to measure voltages at 3 hot legs but in my loads (Air Conditioners) there is no neutral wire. We will only have an earth ground. 

 

According to your expertise : is it safe to use GND earth instead of neutral for the reference ?   Will I be violating any of the NEC codes?

 

Thanks,

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