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Standard Electrical Formulas Used for Power Consumption Calculations
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TO DETERMINE: |
SINGLE-PHASE |
THREE-PHASE |
DIRECT
CURRENT |
| KVA |
I x E
1000 |
I x E
x 1.73
1000 |
-------- |
| Kilowatts |
I x E
x PF
1000 |
I x E
x 1.73 x PF
1000 |
I x E
1000 |
| Horsepower |
I x E
x %EFF x PF
746 |
I x E
x 1.732 x %EFF x PF
746 |
I x E
x %EFF
746 |
| Amperes (when HP is
known) |
HP
x 746
E x %EFF x PF |
HP
x 746
1.73 x E x %EFF x PF |
HP x
746
E x %EFF |
| Amperes (when kW is
known) |
KW x
1000
E x PF |
KW x
1000
1.73 x E x PF |
KW x
1000
E |
| Amperes (when KVA is
known) |
KVA x
1000
E |
KVA x
1000
1.73 x E |
-------- |
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