Working with electrical power

In this chapter, we look at electrical phenomena that affect the way we build and maintain the portable distribution system—namely, voltage drop and non-linear loads. We will also discuss ways we can test and measure electrical circuits, and deepen our understanding of the two electrical hazards, shocks and arcs.


Voltage drop and line loss are terms that are often used synonymously, but they are actually two related but different things arising from the same cause. Voltage drop (Vd) is the erosion of voltage over a long distance caused by the resistance of the feeder cables expending some energy as heat. You can think of the cables as a resistance connected in series with ...

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