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To make a load calculation, you'd need the voltage (volts) and the current (amps) in the distribution line. That would give you the power consumption (watts), and you could find that by multiplying volts times amps. P = I x E [Power equals current times voltage.]

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15y ago
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13y ago

On new installations, load calculations are based on square footage of the building. The second calculation is based on the type of equipment that is to be connected. If you want to measure the load on an existing breaker box, find the current draw coming into the box times the highest voltage coming into the breaker box and multiply them together for the total wattage of the breaker box at that moment in time.

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11y ago

Any continuous load shouldn't exceed the rated kV.A or your generator.

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Q: How do you calculate load on a breaker box?
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