| E = Voltage / I = Amps/ PF = Power Factor / EFF = Efficiency
/ HP = Horsepower |
To Find |
Direct Current |
Alternating Current |
| Single Phase |
Two-Phase* Four-Wire |
Three Phase |
Amperes when Horsepower is known |
HP x 746
---------------
E x EFF |
HP x 746
----------------
E x EFF x PF x 2 |
HP x 746
---------------------------
2 x E x EFF x PF |
HP x 746
------------------
E x EFF x PF x 1.73 |
| Amperes when Kilowatts are known |
KW x 1000
-----------------
E |
KW x 1000
---------------------
E x PF |
KW x 1000
-------------------
2 x E x PF
|
KW x 1000
------------------
E x PF x 1.73 |
| Amperes when "KVA" is known |
|
KVA x 1000
-------------------
E |
KVA x 1000
---------------------
2 x E |
KVA x 1000
----------------------
E x 1.73 |
| Kilowatts |
E x I
--------------
1000 |
E x I x PF
----------------
1000 |
I x E x 2 x PF
--------------------------
1000 |
E x I x 1.73 x PF
-------------------
1000 |
| Kilovolt-Amperes "KVA"- |
|
I x E
-------------
1000 |
I x E x 2
------------------------
1000 |
E x I x 1.73
--------------------
1000 |
| -Horsepower (Output) |
E x I x EFF
-----------
746 |
E x I x EFF x PF
----------------
746 |
I x E x 2 x EFF x PF
-----------------------------
746 |
E x I x EFF x PF x 1.73
---------------------------------
746 |
