Panel Schedules

[Karl H]

If you have a 9KW three phase load @208 (PF isn't known).

To find VA, wouldn't it be 9000/360=25x208=5200.
So phase A=5200
B=5200
c=5200
Am I missing something here? I'm really drawing a blank.:-?

 

[topper]

You have 25a per leg, each leg is 120v. 25x120=3000x3=9000

 

[augie47]

It seesm to me without knowing the power factor or any data on the type of load yiu simply have to say, k*w is basically k*v*a.
You have a 9kw load on 208 volts it would be 300 kw per pahse and a 25 amp load.
Maybe I'm missing something

 

[SG-1]

You cannot calculate the KVA with the information given. Both calculations so far assume a PF of 1. The formula would be:

W / PF = VA

9000W / 1 (PF) = 9000 VA

Now assume a PF of .5

9000W / .5 (PF) = 18000 VA

Voltage does not need to be known.
Hope this helps.

 

[Derick]

If you have a 9KW three phase load @208 (PF isn't known).

To find VA, wouldn't it be 9000/360=25x208=5200.
So phase A=5200
B=5200
c=5200
Am I missing something here? I'm really drawing a blank.:-?

9000/360=25A X 120 ( leg to ground)=3000 VA per phase
(not leg to leg)

 

[Karl H]

Thank you Gentlemen, I think I was stuck on circuit ampacity and not load per phase.