Last month, we discussed selecting and sizing a conductor and limiting the loads to accommodate the temperature termination rating rules outlined in the National Electrical Code (NEC). But when an ...

Two circuits, the impedances of which are given by Z1 = 15 + j12 ohms and Z2 = 8 – j5 ohms are connected in parallel. If the potential difference across one of the impedance is 250 + j0 V, calculate: ...

All questions and answers are based on the 2011 NEC. Q. If circuit conductors are installed in parallel in separate raceways, is an equipment grounding conductor ...

In this collection of GCSE physics revision videos, you can learn more about electricity and energy. We will explain the ways in which energy is stored as well as the differences in electric circuits ...