Came across this, I was a bit confused about the insulated black conductor!!

[Shaun H]

 

[westward10]

Can you show a wider picture. The terminal screw isn't done up onto it.

 

[Dustydazzler]

Looks like someone might have used a black core as and earth

Wasn't black used as earth before green and green yellow

 

[Shaun H]

Looks like someone might have used a black core as and earth

Wasn't black used as earth before green and green yellow

You are probably right, as it was from the supplier's side on an old block of flat's, it was defiantly earth tho.

 

[davesparks]

What are you confused about exactly?

 

[Shaun H]

What are you confused about exactly?

It's not common practice to have a black insulated conductor in a MET

 

[freddo]

It's not common practice to have a black insulated conductor in a MET

It's fairly common on very old installations that haven't been updated, loads of black cables connected to earth rods near where I am located.

 

[Shaun H]

It's fairly common on very old installations that haven't been updated, loads of black cables connected to earth rods near where I am located.

First time I've come across it, it was on the supply side DNO just disappeared up metal conduit pipe in a block of old flats 1960's ish don't know where it went, it also had a braded earth on the metal pipe like a TNS system. it was defiantly earthed through the distributors facilities.

 

[ipf]

First time I've come across it, it was on the supply side DNO just disappeared up metal conduit pipe in a block of old flats 1960's ish don't know where it went, it also had a braded earth on the metal pipe like a TNS system. it was defiantly earthed through the distributors facilities.

It wont come out of the terminal, then? A brave black cable.

 

[brianmoooore]

It's fairly common on very old installations that haven't been updated, loads of black cables connected to earth rods near where I am located.

Same where I am. Possibly for UV resistance on cables to earth rods?