Electrical Power Formula (Single Phase)
$$ S = V \cdot I $$
$$ P = S \cos\phi $$
$$ Q = S \sin\phi $$
$$ \text{Energy} = \frac{P}{1000} \text{ kWh / Units} $$
Mechanical Power Formula
$$ P_{out} = P \cdot \eta $$
$$ \text{HP} = \frac{P_{out}}{746} $$