What is the approximate voltage drop in a 1-phase circuit, 212 ft long, using 10 AWG copper conductors for a load with 17 amperes?

To determine the approximate voltage drop in a single-phase circuit, you can use the following formula:

Voltage Drop (V) = 2 × Length (in feet) × Current (in amperes) × Resistance (Ohm per 1000 ft)

For 10 AWG copper conductors, the resistance is about 1.24 Ohms per 1000 feet. Given that the circuit length is 212 feet and the load current is 17 amperes, you can calculate the voltage drop as follows:

1. First, calculate the total length of the circuit, which in this case is 2 times the one-way length:

Total Length = 2 × 212 ft = 424 ft

2. Now, plug the numbers into the formula:

Voltage Drop = 2 × 212 ft × 17 A × (1.24 Ohms/1000 ft)

3. Calculate:

Voltage Drop = 424 × 17 × 1.24 / 1000

Voltage Drop = 8.9 volts

So, the calculated voltage drop in the circuit is approximately 8.9 volts. This is why the second choice is the correct answer; it accurately reflects the calculations based on the specified parameters of the