Main Protective Bonding - Gas and Water

[Newbie90]

Hi all,

I have been asked to bond the gas and water of my neighbours house as British Gas have picked it up as not bonded.

The consumer unit is an old Wylex one with re-wireable fuses. Ideally needs replacing with MCBs and RCD protection but they are not willing to do that until next year.

As the house is an "upside down" house, the stopcock for the water is upstairs in the kitchen which is a nightmare. The regs say that it needs to be bonded 600mm of entry or "where practical." If I can locate the water pipe downstairs, would this be acceptable or does it need to be on the consumers side of the stop cock?

The gas meter is outside in a box, so again, can I just find the closest point of entry to the house which is practical to bond?

Is supplementary bonding to sink, boiler etc required as it's an old consumer unit?

Is bonding notifiable or need to be signed off?

Thanks in advance

 

[Richard Burns]

The light means that, as there is no RCD protection for all circuits, in this special location of a room containing a shower or bath, that supplementary bonding is required to connect the cpcs of all circuits in the location together with all accessible extraneous conductive parts, irrespective of the disconnection times.

Just as a back note this is for new installations and there is no requirement to retroactively apply the regulations to an existing install, though it may be a good idea in many cases.

For the job you first described I would apply main bonding only, unless it is straightforward to supplementary bond in the bathroom and the customer agrees to the cost.

 

[Engineer54]

Never seen a domestic bathroom's lighting circuit CPC connected to it's supplementary bonding, pre RCD requirements. Anyone else seen it??

To my mind, if no supplementary bonding is in place on older bathroom installations then it doesn't comply to any previous Regulation requirements either, so should be installed, no-matter what it say's in BS7671

 

[Gazthesparky]

Never seen a domestic bathroom's lighting circuit CPC connected to it's supplementary bonding, pre RCD requirements. Anyone else seen it

Have to say I have. I have even installed it myself. In the days of my apprentiship working for the council.

We had to run a 4mm from the light to the shower pull chord. From there down to the hot and cold of the bath to the bath itself then onto the radiator pipes and then a seperate bond onto the raidiator itself. Completely over the top but that's what we had to do according to our QS and the NIC

 

[Engineer54]

Have to say I have. I have even installed it myself. In the days of my apprentiship working for the council.

We had to run a 4mm from the light to the shower pull chord. From there down to the hot and cold of the bath to the bath itself then onto the radiator pipes and then a seperate bond onto the raidiator itself. Completely over the top but that's what we had to do according to our QS and the NIC

Weren't any showers in my day...lol!! Fair enough, i personally have never seen a bathroom light fitting CPC connected to the bathroom supplementary bonding. Helped a friend out many years ago rewiring a few council houses, certainly wasn't done in any of them and we had a LABC inspector coming round checking installation during the day. Also like being present a time of testing too...