Discuss Starter unit any ideas in the UK Electrical Forum area at ElectriciansForums.net
The grey connection is it really L & N it’s all working & been install for ages.Not sure what the question is?
looks like a control box for a roller shutter door?
Blue connection was connected to the Earth…that’s the dangerous bit…but is the grey connection block for L/N it’s got a resistor in …just don’t seem correct …obviously installed by the motor specialists..Existing three phase supply repurposed for single phase but as above check the blue connection at source.
Why is blue connected to earth dangerous, as long as it is identified and at earth both ends. See this all the time where a three phase supply is repurposed.Blue connection was connected to the Earth…that’s the dangerous bit…but is the grey connection block for L/N it’s got a resistor in …just don’t seem correct …obviously installed by the motor specialists..
It appears to be serving the dual purpose of earth and neutral. Marked as earth, but used as neutral.Why is blue connected to earth dangerous, as long as it is identified and at earth both ends. See this all the time where a three phase supply is repurposed.
It appears to be serving the dual purpose of earth and neutral. Marked as earth, but used as neutral.
Yes that’s how it’s been workingDo you.mean the circuit conductors were basically L-E at source with an additional earth taken off the tag
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