Electric shock off live steeltech shed!!

[davesparks]

An (VO)ELCB won't trip on earth faults outside of its own CPC system (e.g. a TT earthed shed, person touching L and standing on grass, etc, etc) and even then, tripping on its own CPC is not that reliable.

Are we sure it is a VOELCB and not a current operated ELCB?

A quick Google search for Baco ELCB seems to show that they are still making and selling RCDs under the description of ELCB.

 

[davesparks]

What I don't understand is that when I had the cable feeding the steeltech shed disconnected from any load, I still got 230v across L and the steel frame.

The steel shed is presumably in contact with the ground so it will be connected to the electrical earth because of this, so it is reasonable to exoect to see a voltage between live and the steel shed.

 

[pc1966]

Are we sure it is a VOELCB and not a current operated ELCB?

Indeed we are not. Some photos, etc, would have helped a lot!

 

[timhoward]

The steel shed is presumably in contact with the ground so it will be connected to the electrical earth because of this, so it is reasonable to exoect to see a voltage between live and the steel shed.

It’s all a bit confused as he originally says

Went from L terminal at socket against the steel frame of shed and got 230v reading. I disconnected the SWA feeding the shed at JB and still got 230v from L to steel frame. So that ruled out any issues at the accessories in the new shed.

I read that as with supply removed he was picking up 230v. My concern is/was that as the house owner was getting shocks off the steel, it may be a broken PEN situation. Unlikely but not ruled out yet.