You would be better off buying a ratchet rather than an impact wrench.
My impact wrench only gets used for changing wheels etc.
Big advantage, it's lighter.
Examples:
https://www.bigredpowertools.co.uk/milwaukee-ratchets
Wouldn't touch MK rcd sockets.
Have a customer that had 3 MK Masterseal rcd sockets that were in an a/c compound for servicing use. Came to the 1st EICR and none of them worked.
Replaced with BG. No problem so far.
No. Replace them.
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If you have a multimeter and know how to use it, it shouldn't be a problem to work out which wire goes where. If you don't/can't, then call a professional.
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