New to Forum. Main Bonding conductor r2 readings.

David Nicholls · Jan 21, 2016

Hi New to the Forum here.

I am a qualified Electrician however inexperienced due to spending 4 years in the army since finishing my apprenticeship. Trying my hardest to get back to the standard that I should be at. I have sat and passed the 17th edition but currently not got 2394/5. Plan to take this when ready and not before.

With regards to Main Bonding Conductors and supplementary bonding. I can find in the regs all the appropriate sizing tables etc but I'm really struggling to find any acceptable readings so that if I were to take an R2 measurement does it satisfy the regs.

Can any one point me in the right direction?

Thanks in advance!

telectrix · Jan 21, 2016

measure your R2. then look up the mili ohms/m for that size cable. multiply by the approx length and if it's close to the measured value, then fine. a rule of thumb is 30m of 10mm will be approx.0.05 ohms

Pete999 · Jan 21, 2016

David Nicholls said:
Hi New to the Forum here.

I am a qualified Electrician however inexperienced due to spending 4 years in the army since finishing my apprenticeship. Trying my hardest to get back to the standard that I should be at. I have sat and passed the 17th edition but currently not got 2394/5. Plan to take this when ready and not before.

With regards to Main Bonding Conductors and supplementary bonding. I can find in the regs all the appropriate sizing tables etc but I'm really struggling to find any acceptable readings so that if I were to take an R2 measurement does it satisfy the regs.

Can any one point me in the right direction?

Thanks in advance!