Earth Bonding requirements

[owen42]

What are the regulations requirements on Earth bonding ?

I am currently planning a 1st fix re wire

I have the following setup

Gas Meter

Mains water after stop tap whole house is plastic.

Combi Boiler

Thanks in advance

 

[newfutile]

It depends if its an extraneous conductive metal part likely to cause a potential (usually earth potential).

if the gas meter has a red insulating band or is fed by plastic it may not need doing , similar with the water.

i usually do 500V IR test between MET and the suspected part, anything below 23 K (23000) ohms i class as in contact with earth and could allow 10 ma of current to flow.

 

[Dustydazzler]

As above , a lot of more modern homes have a plastic water incomer usually a light(ish) blue pipe but I have come across black plastic as well which won't need bonding. You can test bwteen your MET and the stop tape to be certain.

Gas I normally find is supplied in metal pipe but again I have come across plastic as well

 

[cliffed]

Yea it’s like that these days…the young lads now, won’t know what MBPC were for…Belt & Braces years ago.. I still find it difficult not to install to water & gas…