Having (finally) finished wiring my workshop I guess it'd be nice to test the earthing before I hook it up to power. Over here the earth goes back to the service provider.
I know in principle what's needed, but am not sure where to source a tester. (megger?) Can these normally be hired? The other caution is the question of whether or not there is a risk of damaging equipment. Thoughts anybody?
There's four 32A ring mains to groups of 13A sockets, and four dedicated 16A spurs to machines - all through an RCD.
The inverter for the dust system fan and the rotary converter for the three phase band saw are fed separately from the RCD to avoid nusiance trips - both are hooked up to their respective supply, the inverter output cable screen and panel are grounded back to the consumer unit too.
The new consumer unit is wired in parallel with an existing consumer unit via an isolating switch from the incoming cable, the original unit now handles just the lighting and the power to a laundry room next door.
My thanks by the way to Bob and Roy who have been of great assistance - it took a while to get my head around the thinking...
I know in principle what's needed, but am not sure where to source a tester. (megger?) Can these normally be hired? The other caution is the question of whether or not there is a risk of damaging equipment. Thoughts anybody?
There's four 32A ring mains to groups of 13A sockets, and four dedicated 16A spurs to machines - all through an RCD.
The inverter for the dust system fan and the rotary converter for the three phase band saw are fed separately from the RCD to avoid nusiance trips - both are hooked up to their respective supply, the inverter output cable screen and panel are grounded back to the consumer unit too.
The new consumer unit is wired in parallel with an existing consumer unit via an isolating switch from the incoming cable, the original unit now handles just the lighting and the power to a laundry room next door.
My thanks by the way to Bob and Roy who have been of great assistance - it took a while to get my head around the thinking...