What formula is used to determine amperage load?

The formula for calculating amperage load in an electrical system is derived from Ohm's Law, which relates voltage, current, and power. Specifically, the correct relationship for determining amperage is expressed as amps being equal to watts divided by volts. This means that to find the amount of current (in amperes) that an electrical device or system draws, you take the total power (in watts) consumed by that device and divide it by the voltage (in volts) supplied to it.

This calculation is essential for ensuring that electrical systems are properly sized and safe, as it allows technicians to assess whether the current drawn by a device is within the capacity of the wiring and circuit components. Understanding this formula helps oil heat technicians make informed decisions about equipment compatibility and electrical load management.

In contrast, other formulas included in the choices do not correctly represent the relationship between amperage, voltage, and power, leading to misconceptions about electrical loads.