help needed

[green.simon9]

i got an assesment on earthing and answerd all questions apart from 1 :

in a bathroom which requires supplementary bonding and ALL the pipes-work is plastic,
a-bonding is only required between bath and basin taps.
b-bonding must be visible and mechanically protected.
c-RCDs are not necessary on a new circuits.
d-bonding is only required between the earth terminals of separate circuits

tankfull for any replyes

 

[trev]

The question you should ask is what is the purpose of supplementary equipotential bonding and how would this affect/be affected by an installation such as you describe. You will know the answer to this.
I'm not being funny with my response, I'm a father of 3 and I never gave any of them an answer to their homework either, I pointed them in the right direction and let them get the answer. I reckon they learned more that way