That's interesting. There must be a 17th edition book of IEE regs out there. I'll have to update myself.
Regardless of the regs, I would always earth bond anyway. It cannot do any harm, and you are always safer with proper earth bonding than without.
What suprises me is how few so called 'electrical engineers' really understand electricity, and the reasoning behind for the IEE regs. We had an issue at our parish church, where a new distribution board had been fitted, and the circuit breakers were all tripping because their current ratings were too low.
When we called a meeting with the Oberleutnant, it transpired he was not aware that the current rating for Pyrotenax cable (mineral insualted copper cable) is much higher than for normal PVC insulated cables, and that these are actually intended to run warm. Also, that the maximum current rating for circuit breakers is higher than for wired fuses when protecting the same circuit (so called close current protection).
He defended himself by saying that the voltage drop along the cable would increase the current drawn by the electric heaters, light bulbs and so forth at the end of the cable. Err?......
Previous
Index
Next
Flat
Re: Earth bonding update
Edit
Reply
Quote
I'll have to update myself. 
