Garage wiring unsafe and not earthed

[glen davies]

I have a two storey garage with supply from house. On closer inspection I saw that the main supply in was not earthed at the junction box and neither was the light switch(feeding three lights), there is also a double socket in the garage not earthed either. I have ripped out all the wiring and junction box and light switch and double socket. I was hoping to rewire it myself, I know how to wire it all up but would like some advice on junction boxes and want to run a fridge and tumble dryer off double socket too. any advice will be welcome, if Im not confident enough I will obviously get a professional in.

 

[Octopus]

How did you confirm it isn't earthed?

 

[Madocks]

As abovedid you take a zs reading

 

[glen davies]

How did you confirm it isn't earthed?

the main supply in was connected to the junction box by live and neutral, the earth wire in the triple core wasn't connected to anything.

 

[Octopus]

It could be a TT setup.... Only testing would tell you properly.

 

[GMES]

As murdoch said, if the house in Tncs, they could have TT'd the Garage, you might have just ripped everything out for nothing.

 

[Pete999]

the main supply in was connected to the junction box by live and neutral, the earth wire in the triple core wasn't connected to anything.

What type of cable is feeding the garage?

 

[Spoon]

Hi mate. Are you saying there were no earth wires to any of the sockets or light fittings in the garage?

 

[Pete E]

As murdoch said, if the house in Tncs, they could have TT'd the Garage, you might have just ripped everything out for nothing.

Could that be dangerous as the local earth could be at a different potential to N? Or does it depend on the installation being check for that after install?

 

[glen davies]

As abovedid you take a zs reading

no I didn't take a reading havnt got a tester

It could be a TT setup.... Only testing would tell you properly.

ok thakns for the input

 

[glen davies]

As abovedid you take a zs reading

no I didn't take a reading havnt got a tester

Hi mate. Are you saying there were no earth wires to any of the sockets or light fittings in the garage?

yes that's right

What type of cable is feeding the garage?

its 2mm I think with live neutral and earth

 

[Strima]

Were the lights and sockets run in metal conduit?

 

[Spoon]

Hi mate.
Why did you rip out all the fixing, if just the wiring was faulty?
As @Pete999 asked, what type of cable is feeding the garage. Is it twin & earth?
Where does this cable wire to? Your CU?
How does this cable get from its source to the garage?
Does your CU have an RCD?

 

[Taylortwocities]

havnt got a tester

Thats like trying to repair a flat tyre on a car without a nut wrench

 

[davesparks]

the main supply in was connected to the junction box by live and neutral, the earth wire in the triple core wasn't connected to anything.

Triple core what? If it’s armoured cable then the armour will more than likely be the earth, not the third core, it it has been glanded correctly

 

[Spoon]

Triple core what? If it’s armoured cable then the armour will more than likely be the earth, not the third core, it it has been glanded correctly

@Pete999 and myself have asked what type of cable it is. Just waiting for the OP to reply mate.
Also according to the OP none of the sockets or lights were earthed.

 

[Octopus]

Could that be dangerous as the local earth could be at a different potential to N? Or does it depend on the installation being check for that after install?

Your next step is to find a local friendly spark to come and determine what precisely is going on .......................making any further changes isn't a sensible course of action.