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Discussion Starter · #1 ·
When calculating conduit fill for multiple conductors of different sizes what charts are used? I guess I would need to convert awg sizes to
Mil and then add them all?
 

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There's an App for that. Seriously. I use Electrician Helper.

But yeah, Table 5 in Chapter 9 if you want to do it by hand.
 

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I see, thanks for the help. I read over the tables and have another question, what do these percentages mean? It goes total area 100%, to 60%, to 1 wire 53%and so on. Thanks for the help
 

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I see, thanks for the help. I read over the tables and have another question, what do these percentages mean? It goes total area 100%, to 60%, to 1 wire 53%and so on. Thanks for the help
100% is the total area of the conduit. For one conductor, you can fill it with 53% copper, 2-31%, more than 2-40%
 

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Discussion Starter · #7 ·
Oh I see. So if you have 4 or more conductors in the conduit 60% of the conduit should be open space right?
 
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