Shower supply, ever needed additional earth cable.

[ruston]

Not a separate earth as such in the 16th as I remember , but if the supply pipe was copper (conductive) it would be part of the equipotential bonding , as would all the other extraneous metal parts , including the radiator.
There is still a requirement in the latest regs unless certain conditions are met.

 

[ruston]

Andy we will have to stop meeting like this.

 

[Ian1981]

In the 16th we had a 4mm earth cable connecting to all earth terminals of the circuits serving the location in a bathroom such as the shower then to the light and then down to the extraneous pipe work under the basin, radiator etc
Looked Gorgeous darling!

Then additional protection by an rcd made my life so much easier.

I think it was the 15th when they bonded every piece of metal they could find but I’m far too young to have ever been involved with anything earlier than the 16th

Westy is your 15th edition guru on here , still reads the books I think

 

[westward10]

I shall have a look laters.

 

[Deleted member 26818]

Could be that the T&E had too small a CPC, so required Supplementary bonding for the Zs.
Not aware of any requirement for two CPCs.

 

[westward10]

It is not likely the cpc was inadequate the only time this may apply was when 2.5 cables had 1.0 cpcs on BS3036 30A fuses.

 

[telectrix]

was in 16th, all electrical equipment in bathroom supplementary bonded to each other like spaghetti. ( except the metal windows and bog flush. these were the preserve of D.W. cock something.

 

[ruston]

was in 16th, all electrical equipment in bathroom supplementary bonded to each other like spaghetti. ( except the metal windows and bog flush. these were the preserve of D.W. cock something.

A blast from the past that Tel.

 

[Risteard]

Could be that the T&E had too small a CPC, so required Supplementary bonding for the Zs.

Supplementary bonding is not there to reduce the Zs. It's there to keep the touch voltage at a safe level until disconnection occurs.

 

[Deleted member 26818]

Supplementary bonding is not there to reduce the Zs. It's there to keep the touch voltage at a safe level until disconnection occurs.

That’s supplementary equipotential protective bonding.