Among the revisions in the 2014 NEC are some new Articles, one of which is Art. 393. As with most Chapter 3 Articles, this one exists to address a particular type of product. Low-voltage suspended ...

A disconnecting means for the Class 2 supply to the power grid system for low-voltage suspended ceiling power distribution systems shall be located as to be _____ and _____ of the Class 2 power source ...

In power distribution systems, three-phase transformer configuration directly impacts system reliability and load management.

Little attention or thought is given to these critical assets until a failure occurs. With a little thought and planning for maintenance, most electrical system failures can be eliminated. Five to 10 ...