- Joined
- 27 Jan 2008
- Messages
- 23,747
- Reaction score
- 2,679
- Location
- Llanfair Caereinion, Nr Welshpool
- Country
This report says how the HSE response seems inadequate, once I was indecisive now I am not so sure, is there really a problem?
The IET wiring matters of march 2021 seems to have gone off line, maybe they are reconsidering? However the question is what is the risk, OK EV charging point or hot tub and we have to be very careful, but what about an outside boiler, if housed in a plastic shed thing, then only during maintenance is it really a problem.
Nearly all garden equipment is class II, so in real terms the biggest problem is bonding on the wrong side of an isolation piece with a gas supply.
So looking at risk assessment, which is the worst?
A large cross sectional area earth wire which can carry enough current to melt the gas pipe?
or
A small cross sectional area earth wire which will itself melt before the gas pipe?
What I am saying is my single rod in the ground is not a problem as if there is a loss of PEN, it will only carry around 10 amp, but as I have related many times, the radio ham with an earth mat in his garden, the earth was too good, and the cables melted.
I look at where I work, metal frame shed, bonded to 8 mile of railway line, loss of PEN is unlikely to cause a danger, in fact the problem is more even working out there has been a loss of PEN.
So we read read these reports but is it really a problem?
The IET wiring matters of march 2021 seems to have gone off line, maybe they are reconsidering? However the question is what is the risk, OK EV charging point or hot tub and we have to be very careful, but what about an outside boiler, if housed in a plastic shed thing, then only during maintenance is it really a problem.
Nearly all garden equipment is class II, so in real terms the biggest problem is bonding on the wrong side of an isolation piece with a gas supply.
So looking at risk assessment, which is the worst?
A large cross sectional area earth wire which can carry enough current to melt the gas pipe?
or
A small cross sectional area earth wire which will itself melt before the gas pipe?
What I am saying is my single rod in the ground is not a problem as if there is a loss of PEN, it will only carry around 10 amp, but as I have related many times, the radio ham with an earth mat in his garden, the earth was too good, and the cables melted.
I look at where I work, metal frame shed, bonded to 8 mile of railway line, loss of PEN is unlikely to cause a danger, in fact the problem is more even working out there has been a loss of PEN.
So we read read these reports but is it really a problem?