Bathroom - Supplementary earthing

Bathroom - Supplementary earthing

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Discussion

anonymous-user

Original Poster:

53 months

Friday 7th December 2018
quotequote all
Is supplementary earthing required nowadays in a bathroom where: (1) all devices are connected to a 30mA RCD and (2) all water outlets use copper piping with no breaks that can be traced back to an earthed pipe?

TY

Andrew_S

704 posts

79 months

Saturday 8th December 2018
quotequote all
Provided your main equipotential bonding is in place it is not necessary to have supplementary bonding in place if all affected circuits are protected by a 30ma rcd. But it does not mean that it is wrong to have supplimentary bonding in place.

Edited by Andrew_S on Saturday 8th December 13:10

anonymous-user

Original Poster:

53 months

Sunday 9th December 2018
quotequote all
Ty for your reply.

The bathroom has two central heating pipes and hot/cold pipes ( all earthed at the boiler traceable to the main incoming earth point). All circuits protected by 30mA rcd. Currently there is no supplementary bonding hence my question.

Alucidnation

16,810 posts

169 months

Sunday 9th December 2018
quotequote all
What's the resistance between the pipes?

anonymous-user

Original Poster:

53 months

Sunday 9th December 2018
quotequote all
That was my next step. Need to dig the AVO out....

anonymous-user

Original Poster:

53 months

Wednesday 12th December 2018
quotequote all
Alucidnation said:
What's the resistance between the pipes?
Zero Ohms between all four pipes.