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Three Phase Boards


universe224

Question

 i am changing a three phase board the existing board has a 100Amp main switch. The board supplied is a 125 Amp main switch is it okay to use.

 

Thanks

Neil

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10 answers to this question

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:red card


no, it will blow up and risk causing a black hole and swallow up the entire universe

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are you sure you can do this job??

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If I want to use 3 phase on a single phase supply can I just run extension leads from my neighbours on either side,?

That'd work, or do you think I will have problems?  :C 

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That would be fine Step's but make sure they both have RCD's on the leads and the plug-top fuses are the same size

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If I want to use 3 phase on a single phase supply can I just run extension leads from my neighbours on either side,?

That'd work, or do you think I will have problems? :C

Well I'd never have thought of that! :slap
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 the plug-top fuses are the same size

 

 M6 threaded bar or can slow blow M8 be used?

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Where are the additional 25A coming from....or is it being underrun

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Its just the rating of the main switch Universe , it'll be fine .   Its just a switch , it doesn't offer any overload protection .

 

Did you cover 3 phase on your course ?

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No you need the part 3P course for that :-)

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No you need the part 3P course for that :-)

 

Unfortunately this cannot be done on a 5ww course ....

 

Its a 15ww course...

 

3P x 5w = 15w

 

 

 

 

 

 

 

unless its changed again..

 

in which case I am wrong  so go back to Andy's Post#2!!!!

 

 

:C

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