Well im affraid sir your very wrong!
I'm not wrong. It is a very poor conductor. As I said, it is impurities within water which increase the conductivity.
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Discuss Whilst we're on the subject of bonding... in the Talk Electrician area at ElectriciansForums.net
Well im affraid sir your very wrong!
Well im affraid sir your very wrong!
If in doubt then insulation test at 500v from MET to part in question <22k ohms bond if not NO NEED! If an installer wanted to he can nothing in bs7671 to say you cant!
But you may make the installation more dangerous if you bond unnecessarily. Daz
Would you care to elaborate on that??
1) i wouldnt say that two metallic parts that are 1666 ohms apart are at substantially the same potential, despite our interpretation of reg 415.2.2
2)Thats what i don't understand; - having 1666 ohms between an exposed conductive part and an extraneous conductive part during fault conditions will give a voltage approaching mains - depending on the circuit impedance of course.
cheers
sam
Reply to Whilst we're on the subject of bonding... in the Talk Electrician area at ElectriciansForums.net