I have just moved into a house and have had a good look around at the bathroom bonding. All the pipes (bath, basin, central heating) are all nicely bonded together, as are the pipes in the airing cupboard which also houses a whole house pump.
However..... I notice the bathroom light ( a proper zone 2 one) and the shaver socket (a new looking MK one) do not have their earths bonded to the pipework. Now looking around this would be very difficult without lots of chasing/drilling (there is a flat roof above with no access), the difficulty may be why it was not done in the firstplace!
Now in the loft space about 5 feet away from the bathroom light is a lighting junction box with all the lighting connections, and this J/B feeds the bathroom light as well as (via a 3A FCU) the shaver socket. Would it be sensible to run a 4mm earth cable from the J/B earth in the loft, through the airing cupboard, under the floor to the bathroom pipe bonds in an attempt to get an equipotential, or is this pointless as it would rely on the earth cable in the 1.5mm T+E cables to the shaver/light rather than how it should have been done... Or shall I just leave it as is?
Also, should the whole house pump in the airing cupboard have a 4mm earth lead from the switched FCU (which comes from the ring main) to the copper pipes in the airing cupboard?
many thanks
However..... I notice the bathroom light ( a proper zone 2 one) and the shaver socket (a new looking MK one) do not have their earths bonded to the pipework. Now looking around this would be very difficult without lots of chasing/drilling (there is a flat roof above with no access), the difficulty may be why it was not done in the firstplace!
Now in the loft space about 5 feet away from the bathroom light is a lighting junction box with all the lighting connections, and this J/B feeds the bathroom light as well as (via a 3A FCU) the shaver socket. Would it be sensible to run a 4mm earth cable from the J/B earth in the loft, through the airing cupboard, under the floor to the bathroom pipe bonds in an attempt to get an equipotential, or is this pointless as it would rely on the earth cable in the 1.5mm T+E cables to the shaver/light rather than how it should have been done... Or shall I just leave it as is?
Also, should the whole house pump in the airing cupboard have a 4mm earth lead from the switched FCU (which comes from the ring main) to the copper pipes in the airing cupboard?
many thanks