I get a call from a customer (i have been doing work for more than 15 years) the new boiler maker had got his mate to connect a machine... and had told the customer that whoever was doing their electrical was an idiot and had no idea what they were doing... wow not lets have a look at what might be wrong ...straight the sparkie is an idiot.
I get in my vehicle and drive to site... i am only human ...maybe i did make a mistake... imagine that ...he had the machine connected to a 3 phase orange 4 wire (not 5 wire)plug with no neutral ...so to create a neutral ...he connected the earth to the neutral point to create a neutral ...because some of us do actually use 3 phase earth leakage units on our 3 phase sockets ...there was no way on this earth that you could switch on the earth leakage ...even with all the circuit breakers off ...if you switch off the main switch it will reset ...however as soon as you switch the main switch on ...the earth leakage will trip... i pointed out the problem did a temp connection to show them it would work if wired correctly with the neutral and earth not connected ... i used a 5 pin plug and imagine that the new machine ran without a problem
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