Aaaaarrrrggghhh! Noooooooo! Bonding.

[FredFlintstone]

Evening all,

For some reason, I've just had a thought.

I completed my reqire and CU install and all was passed by the BCO without problem (well, a couple of minor issues which were rectified / clarified on the day of final inspection). I'd bonded the water and gas supply separatelyrather than by a songle unbroken length of cable because the gas and water supplies are in different directions from the meter. This was all fine.

However, I have just realised that I have potentially missed something out when it comes to bonding. I have a utility room behind the kitchen with a rising water supply which is effectively a spur off the rising main into the kitchen. Being a utility room, there are appliances in this room. Namely a washing machine, dishwasher and chhest freezer. There's no sink but I'd like to fit one in the future with an instant water heater above to provide hot water.

For some reason, it's never occurred to me that I may need to bond this supply. I just kinda forgot there was a water supply there. The BCo didn't get onto it either so while I have a certified installation, it may not actually be up to scratch.

Should this supply be bonded? My big problem now is cable routes back to the CU becaus they've now been covered up and plastered over.

Regards

Fred

 

[JohnD]

you have to bond metallic services where they enter your house.If, having done that, they pass along to another room and pop up there, you don't need to bond the same service again.

If it was a pipe that came independently into your house from outside into the other room, then you would have to main-bond it, since it could possibly introduce a potential from outside.

 

[giblets]

I'd bonded the water and gas supply separatelyrather than by a songle unbroken length of cable because the gas and water supplies are in different directions from the meter.

I thought two seperate 10mm2 was the requirement.

 

[JohnD]

No, you can use the same length, go to the first service, then on to the next, as long as you don't cut the wire. It must be a continuous unbroken length. You can strip off a bit of insulation and clamp it.

This is convenient if, say, the gas andwater pipesenter the house close together in the kitchen, and the MET is some distance away.

 

[RF Lighting]

You can bond both services with a single 10.0mm² cable providing it is continuous throughout its entire length. (i.e. not cut at the first clamp)

 

[JohnD]

hee hee

 

[giblets]

Many thanks lads, I stand corrected.

 

[Spark123]

If the rising main is plastic, would it be easier to replace the internal pipework with plastic?