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raga
Participant

Join Date: Oct 2007
Posts: 1

63A Receptacles

05/12/2008 2:07 AM

Hi friends,

Help me out in this. I have 10 63A welding receptacles connected in to a PDB. What shall be the incomer size of the PDB. As we are not going to use all the 10 welding loads at a time i am confused regarding this rating. If its a nuclear project i shall consider 80%. But this being a refinery, what % shall i consider. 20% or 50%??????
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hastingselectric
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Join Date: Oct 2007
Location: Hartwell Georgia N34* 56.770 / W83* 35.431
Posts: 222
Good Answers: 1
#1

Re: 63A Receptacles

05/13/2008 8:08 AM

How many welders do you plan to have on site?

James

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tchapman_egr
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Join Date: May 2008
Posts: 13
#2

Re: 63A Receptacles

05/13/2008 10:31 AM

Your diversity factor depends on what type of work is being done.....If you are planning on having turnaround maintenance with a number of crews working at the same time your deiversity factor will be 80%....If you are planning on using it only for standard maintenance I would tend to use 40% but I would not go much lower....

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