Thread: Laser PSU tripping RCD
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18-11-2020 #8
It might have been due to the mains input filtering on the PSU - I had a similar problem when I commissioned my CNC, it was only taking about 6A @ 230V but was tripping a 63A breaker every time I switched it on . Solution was to replace the RCD with a type F device of the SAME rating, these are less susceptible to switch on surge and HF current draw whilst still providing earth leakage safety.
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