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.
But also confused as to if it was to become dangerous wouldn’t the fuses take care of that considering the ZS is correct.
ADS is only intended to work for faults of negligible impedance - say a live wire coming loose and touching a metal case of an appliance or insulation melting away to allow a live wire to touch something earthed (which covers the vast majority of dangerous faults). Traditional ADS doesn't work for faults of much higher impedance (say due water ingress or corrosion) or direct contact where a victim touches a live part and their body resistance limits the fault current.
But also confused as to if it was to become dangerous wouldn’t the fuses take care of that considering the ZS is correct.
ADS is only intended to work for faults of negligible impedance - say a live wire coming loose and touching a metal case of an appliance or insulation melting away to allow a live wire to touch something earthed (which covers the vast majority of dangerous faults). Traditional ADS doesn't work for faults of much higher impedance (say due water ingress or corrosion) or direct contact where a victim touches a live part and their body resistance limits the fault current.
