Residential load calc.

[gregor]

I just started teaching exam prep for our apprenticeship.We are working on Resi. Service calcs.In annex D ex.D1(a) the calc only uses the dryer motor va at 100% .In D1 (b) the largest motor va is used +25% for a total of 125% and refers us to 430.24. Why didn't they do that in ex.D1(a)?

 

[bdarnell]

The dryer is considered an appliance and not covered by Article 430 or 440.

 

[haskindm]

For what it is worth, I agree with Brad.

 

[bdarnell]

For what it is worth, I agree with Brad.

It's worth a lot to me. I don't get agreement often. :lol:

 

[charlie b]

I also agree with Brad (just trying to boost your ego, buddy :lol: ). But I have a different reason. 220.54 gives us clear instructions of how to handle dryers. It says to use 5000 VA or the nameplate rating. It does not tell us to add 25% to either of those numbers.