Why should power factor be corrected at the load?
A. The user reaps the same advantages as the utility company for high power factor only on a smaller scale. Also, if each load has been corrected, the power factor remains relatively constant since in plants loads are switched on and off and the dangers of over-correction do not exist. If however, power factor has been corrected at the service entry, system power factor can make relatively wide swings as heavy loads are switched on and off. In providing for power factor correction it should be remembered that distribution boards and circuits can carry a greater useful load if the capacitors are installed as near as possible to the source of the low power factor. For this reason either bulk or individual correction, rather than correction at the intake point, can be justified.
