Now then lads and lasses:
I've been checking out my home earthing arrangement of late and would like you to clarify if I've spotted something amiss or not.
It's a TNS system with a 60A main fuse with one 6mm cable going to the consumer side of the mains stop tap and one 6mm going to the cold water tap in the bathroom. Now, there was no supplementary bonding on the hot water taps (actually there was one hanging loose under the bath where the plumber 'forgot' to re-connect after a new suite was fitted last year!!) or the CH system. So, I've re-connected the hot water clamp and fitted a 6mm from this clamp to the radiator pipes and either side of the boiler in the airing cupboard.
So....
There is an electric shower over the (fibreglass) bath but I can see no evidence of direct bonding between the pipework in the bathroom and the shower. I know the shower will be earthed via the T&E cable and the 6mm cable goes from the cold water tap pipe straight back the same CU earth clamp but is this enough?
Also, although there's a earth from the CU to the water mains, there isn't one going to the gas supply right next to it. They are both located under the sink in the kitchen, so question is although I know kitchen bonding is not a specific requirement, because the steel sink is within inches of both the gas and water pipes (all copper) should I be bonding the whole lot together?
Finally, from my understanding of the regs, although the 6mm earth cable from CU to pipework is minimal, it is actually adequate. However, the main equipotential bonding conductor that's attached from the supply cable to the CU also seems to be only 6mm. From my understanding of Table 54H of the regs, I'm thinking this should actually be 10mm....or am I thinking too hard for a Monday morn and have it completely wrong?
Thanks for your thoughts on the matter,
ukants
I've been checking out my home earthing arrangement of late and would like you to clarify if I've spotted something amiss or not.
It's a TNS system with a 60A main fuse with one 6mm cable going to the consumer side of the mains stop tap and one 6mm going to the cold water tap in the bathroom. Now, there was no supplementary bonding on the hot water taps (actually there was one hanging loose under the bath where the plumber 'forgot' to re-connect after a new suite was fitted last year!!) or the CH system. So, I've re-connected the hot water clamp and fitted a 6mm from this clamp to the radiator pipes and either side of the boiler in the airing cupboard.
So....
There is an electric shower over the (fibreglass) bath but I can see no evidence of direct bonding between the pipework in the bathroom and the shower. I know the shower will be earthed via the T&E cable and the 6mm cable goes from the cold water tap pipe straight back the same CU earth clamp but is this enough?
Also, although there's a earth from the CU to the water mains, there isn't one going to the gas supply right next to it. They are both located under the sink in the kitchen, so question is although I know kitchen bonding is not a specific requirement, because the steel sink is within inches of both the gas and water pipes (all copper) should I be bonding the whole lot together?
Finally, from my understanding of the regs, although the 6mm earth cable from CU to pipework is minimal, it is actually adequate. However, the main equipotential bonding conductor that's attached from the supply cable to the CU also seems to be only 6mm. From my understanding of Table 54H of the regs, I'm thinking this should actually be 10mm....or am I thinking too hard for a Monday morn and have it completely wrong?
Thanks for your thoughts on the matter,
ukants
