Starter unit any ideas

[cliffed]

The grey connection to the lower left..it’s on a starter control box for up & down.

 

[James]

Not sure what the question is?

looks like a control box for a roller shutter door?

 

[cliffed]

Not sure what the question is?

looks like a control box for a roller shutter door?

The grey connection is it really L & N it’s all working & been install for ages.
This is the isolator for that unit .

 

[timhoward]

I see what you mean.
It looks like you have three phase plus blue marked as Earth coming in.

And I think it’s a single phase supply needed.
And you are (rightly) questioning whether the N for the load is connected to Earth not N.
I had similar recently and you need to check the other end and see how the blue conductor is actually connected.

 

[Mikegh]

The earth seems to be taken off the tag

Neutral wired direct and a phase off the isolator

 

[westward10]

Existing three phase supply repurposed for single phase but as above check the blue connection at source.

 

[cliffed]

Existing three phase supply repurposed for single phase but as above check the blue connection at source.

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..

 

[Mikegh]

Do you.mean the circuit conductors were basically L-E at source with an additional earth taken off the tag

 

[brianmoooore]

So it's single phase, working of one phase of a three phase supply and the earth wire?

 

[westward10]

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..

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.