When a kitchen sink is earth bonded, is it sufficient to simply connect the
cable to the cold water pipe under the sink via a bonding strap?
The reason I ask is that the mother in-law has just had this done and the
sparky has done just that. My thinking was that the sink has to be
physically bonded as well via a tag fitted to most sinks during manufacture.
Just connecting the pipe would not properly bond the sink as well in my
The sparky has wasted his time and/or your MILs money. There is no
requirment in the 16th edition to supplementary bond (no such thing as earth
bond) a kitchen sink.
The ideas of bonding kitchen sinks goes back to the 15th edition
Thanks for the reply.
This is interesting as the work was done by British Gas when they fitted a
new boiler. They said that they had to bond the gas meter and the kitchen
sink to the main earth connection at the consumer unit. This work was
necessary before they would carry out any work on their property. Gonna
speak to the guy tomorrow as there is another problem.
They (British Gas) might have meant that the incoming water main
should be bonded. This *is* a requirement, as it is for the incoming
gas main. As the water main often enters the house underneath the
kitchen sink maybe this explains it.
That is what I thought I answed. Lets me clear things up so that we are on
the same wavelength and I apologise for being unclear.
"You would still need to main bond if the pipework in the house is metal.
Only if all the pipework is plastic do you not need to bond."
should have read
"You would still need to main bond the water if the pipework in the house is
metal and the incoming supply is plastic. The same applies when the incoming
water is metal and the house is done in plastic.
Only if all the pipework (internal and external) is plastic then you do not
need to bond."
Of course as gas piping within a domestic property will be in metal as
plastic is not allowed this will require bonding at all times.
HTH make things clearer.
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