Where should the main earth connect to the gas/water pipes

Daddy Boots · 13 Jan 2007

A sparks has just done some minor works on the house and has told me the main earth should have 2 x 10mm earth and not 2 x 6mm, even though there's no sign of burning. My query is about where they should be bonded to the gas/water pipe. Currently the earth to the gas pipe is bonded to the outgoing gas pipe at the meter which I believe is correct. The earth bonded to the water pipe midway between where it enters the house in the basement and the stopcock. The distance from where it enters the house to the stopcock is around 7m. I believe it should be either my side of the stopcock or a lot nearer to where the water pipe enters the building. Anyone got BS 7671 handy ?

EddieCurrent · 13 Jan 2007

Hello,

Within 600mm of the meter, or at the point of entry to the building if the meter's outside, before any branches in the pipe.

luminaire · 13 Jan 2007

The gas bonding should be within 600mm of the gas meter, and the water should be next to the stop cock, using 10mm earth cable.

Mosez · 13 Jan 2007

Daddy Boots said:
A sparks has just done some minor works on the house and has told me the main earth should have 2 x 10mm earth and not 2 x 6mm, even though there's no sign of burning. My query is about where they should be bonded to the gas/water pipe. Currently the earth to the gas pipe is bonded to the outgoing gas pipe at the meter which I believe is correct. The earth bonded to the water pipe midway between where it enters the house in the basement and the stopcock. The distance from where it enters the house to the stopcock is around 7m. I believe it should be either my side of the stopcock or a lot nearer to where the water pipe enters the building. Anyone got BS 7671 handy ?

You need to bond within 600mm from the gas meter, before any branching, on the consumers side

and within 600mm of the water mains coming out of the ground, if there is no water meter inside.

If a water meter exists then within 600mm of the water meter on the consumers side before any pipe branching.

clean the copper pipes with sand paper until shiny and then fit new earth clamps and fit 10mm cables back to the CU with crimped connections fitted to the earth clamps.

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Where should the main earth connect to the gas/water pipes

Daddy Boots

EddieCurrent

luminaire

Mosez

DIYnot Local

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