need to pick some brains

[madeinengland]

got some homework due in tomorrow and i can't find some of the answers anywhere in osg or regs book.

1) how do you test metal conduit for continuity?

2)what is the relationship between resistence values for live and earth cables in a ring?
how would a spur effect test readings.

3)where does it say about making good after installing cables in walls?


answers please or pages to find answers in regs book
cheers

[Ohmslaw]

How many different forums do you need to post this question on then??