Is it dangerous a low reading such as 1Kohm for IR I know you need to seriously investigate but if a 3 phase submersible pump is installed correctly wouldn’t the breakers/ fuses blow before the equipment is unsafe.
Where was the reading taken, which part of the circuit ?
and was the load disconnected ?
so the measurement was reading the fixed wiring?
or was it just the motor windings?
etc..........
230mA to earth while the motor is swiched on and powered up might be regarded as 'rather' leaky but not totally desparate as long as the cpc terminals connections throughout the circuit are in good order, if however the measurement was across the fixed wiring only then there may be a poor insulation problem. and as Mike says if the connections throughout the cpc are suspect then there will be volt drops and the likelihood of a shock potential with the potential to deliver a killing current..Circuits with >10mA leakage currents require extra eathing facilities (high integrity earthing arrangements)
Where was the reading taken, which part of the circuit ?
and was the load disconnected ?
so the measurement was reading the fixed wiring?
or was it just the motor windings?
etc..........
230mA to earth while the motor is swiched on and powered up might be regarded as 'rather' leaky but not totally desparate as long as the cpc terminals connections throughout the circuit are in good order, if however the measurement was across the fixed wiring only then there may be a poor insulation problem. and as Mike says if the connections throughout the cpc are suspect then there will be volt drops and the likelihood of a shock potential with the potential to deliver a killing current..Circuits with >10mA leakage currents require extra eathing facilities (high integrity earthing arrangements)
