Last month, we showed how you could use vector diagrams and simple math to calculate neutral currents in 3-phase, 4-wire circuits. In this last installment, we'll talk about using simple parallelogram ...

I was planning on running the wiring for my new subwoofer amp from the laundry room (where I have a new 30A circuit waiting) to the living room tomorrow. However, I just realized that in my indecision ...