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electricity


Posted by fergal mullan on August 10th, 2003 05:01 PM
In reply to 3 phase electricity by kevin on March 25th, 2003 08:28 PM [Go to top of thread]
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What is 3 phase, 4 wire electricity supply and what are its advantages over single phase supplies?

what is meant by a ring main?
what are its advantages and the regulations applying to its installation?

What is meant by a consumer unit and how is it used in typical domestic electrical installation?

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