Question

The ampacity of feeder wires for a group of motors is equal to the sum of the full load current rating of all motors plus what percent of the highest rated motor in the group?

1. 25%
2. 50%
3. 100%
4. 125%

Answer 1

1. 25%. The ampacity of feeder wires for a group of motors is equal to the sum of the full load current rating of all motors plus a certain percentage of the highest rated motor in the group.

Step-by-step explanation:

The ampacity of feeder wires for a group of motors is equal to the sum of the full load current rating of all motors plus what percent of the highest rated motor in the group?

To find the ampacity of the feeder wires, you need to add the full load current rating of all the motors in the group and a certain percentage of the highest rated motor in the group.

Example:

If the full load current rating of all the motors is 100 A and the highest rated motor is 50 A, and we are adding 25% of the highest rated motor, the ampacity of the feeder wires would be:

100 A + (0.25 * 50 A) = 100 A + 12.5 A = 112.5 A

Therefore, the correct answer is 1. 25%.