Neutral and earth for a 3 phase motor
Neutral and earth for a 3 phase motor
(OP)
Hello,
I have a contractor who wants to use a signle conductor for both earth and neutral, but from what i read here in your posts "neutral shall be connected to earth only at the service entrance" - so is there a breach of the code in him doing so?
Another thing - i don't think the Search service works because for the nth time i try and i get no results, could you please give me an example of a search that gives results? :)
I have a contractor who wants to use a signle conductor for both earth and neutral, but from what i read here in your posts "neutral shall be connected to earth only at the service entrance" - so is there a breach of the code in him doing so?
Another thing - i don't think the Search service works because for the nth time i try and i get no results, could you please give me an example of a search that gives results? :)






RE: Neutral and earth for a 3 phase motor
Gunnar Englund
www.gke.org
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100 % recycled posting: Electrons, ideas, finger-tips have been used over and over again...
RE: Neutral and earth for a 3 phase motor
Putting the words neutral earth into the search box at the top of the page produced no results. Putting those words in the Google Search for Eng-Tips Forums provided over 200 results, clicking on advanced search and using those key words for the forums in my thread minder list resulted in "hundreds of results matched your query".
RE: Neutral and earth for a 3 phase motor
Why wouldn't i need a neutral, do all 3 phase motors have a detlta connection? The motors are direct on line, but for star-delta, i will give him only 1 cable to the starter, from there to the motor he has to run 2, is the cable for star delta also 3 cores without neutral?
or is the reason that the neutral current is perfectly zero, therefore no need for the wire?
RE: Neutral and earth for a 3 phase motor
See thread237-169272.
RE: Neutral and earth for a 3 phase motor
JRaef.com
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RE: Neutral and earth for a 3 phase motor