lagging and leading power factor

The major diffrence will be evident in th efficiency of power utilisation.

the sme amount of KVA will produce less power when the PF is low.

eg. 50 KVA X 0.8 PF = 40 KW

and 50 KVA X 0.6 PF= 30 KW

This will result in higher consumer bills and bigger sizes of cables .

I think this topic was covered previously ,please search the site before you place your question.

It is the efficiency of the power.

Here is an analogie comparing Voltage(pressure) and Current (flow of power) to an IC engine. In an IC engine, The explosion could be compared to the pressure, and the torque as the flow of power.

1. If the explosion happens close to top dead center, the most power is available to move the heads and create the torque.
2. If the explosion happens too early(lead), it actually fights against the cylinder head and reduces the torque.
3. If the explosion happens too late(lag), less of the pressure is transferred into torque.