bank calculation example in 2005 nec prep book

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electricalperson

Senior Member
Location
massachusetts
doing the bank service calculation in the book it shows the heat at 10kW

doing the AC/heat calculation, the ac is 10 hp at 230v

the ac is 230 x 50 = 11500va. i am going to use the 11500va ac load as the calculation since the heat wont be on at the same time.

but in the book it shows the heat in the picture at 10kw but in the calculation it has the heat at 15kw.

only thing i find in the code is branch circuit calculations for fixed electric space heating must be calculated at 125% because its a continuous load.

i dont know where the 15kw came from do you think its an error in the book?
 

electricalperson

Senior Member
Location
massachusetts
the error wasnt on the website. i dont know if im missing a step calculating the heat for a commercial property. i dont see any demand factor and 220.51 says its calculated at 100%
 
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