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How do you calculate the load and cable size?

In: New Electrical Work [Edit categories]

Answer:

The first thing that has to be done is to determine what the amps or wattage of the connected load is. This can be done from the nameplate on the equipment or device to be connected. If only the wattage is found use the following formula Amps = Watts/Voltage. Once the current is known the cable size is determined from a table of, allowable ampacities of 3 copper conductors in a raceway, in the electrical code book that is used in your specific region.

First answer by Woodman66. Last edit by Woodman66. Contributor trust: 396 [recommend contributor ]. Question popularity: 4 [recommend question].

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