Demand factors are values used to estimate the load for feeders, service conductors, and service equipment.

Demand factors are values used to estimate the load for feeders, service conductors, and service equipment.

• A. Values used to estimate the load for feeders, service conductors, and service equipment.
• B. The ratio of current to voltage for a circuit.
• C. A type of circuit breaker rating.
• D. The temperature coefficient of resistance.

Answer: (A)

Demand factors are the values engineers use to estimate the actual load that feeders, service conductors, and service equipment will have to carry. They represent the portion of the total connected load that is typically demanded at peak usage, rather than the full sum of all connected devices. This allows for properly sizing components without oversizing for loads that won’t all operate at once. For example, a building with a connected load of 100 kW might have a demand factor of 0.8, giving an estimated load of 80 kW to design the feeders and service equipment around. The other concepts described don't fit this purpose: a current-to-voltage ratio relates to impedance/admittance, a circuit breaker rating concerns the breaker’s interrupting capacity or continuous current rating, and the temperature coefficient of resistance describes how resistance changes with temperature.

Demand factors are the values engineers use to estimate the actual load that feeders, service conductors, and service equipment will have to carry. They represent the portion of the total connected load that is typically demanded at peak usage, rather than the full sum of all connected devices. This allows for properly sizing components without oversizing for loads that won’t all operate at once. For example, a building with a connected load of 100 kW might have a demand factor of 0.8, giving an estimated load of 80 kW to design the feeders and service equipment around. The other concepts described don't fit this purpose: a current-to-voltage ratio relates to impedance/admittance, a circuit breaker rating concerns the breaker’s interrupting capacity or continuous current rating, and the temperature coefficient of resistance describes how resistance changes with temperature.