What is the approximate voltage drop in a 350 ft. long circuit with a current of 38 amps using 6 AWG copper conductors?

Get ready for the Limited Licensed Electrician exam with our interactive quiz. Use flashcards and multiple choice questions, complete with hints and explanations for thorough preparation. Ace your test!

To determine the voltage drop in a circuit, the formula used is:

[

\text{Voltage Drop} = \frac{2 \times \text{Length} \times \text{Current} \times \text{Resistance per 1000ft}}{1000}

]

For copper conductors, the resistance for 6 AWG wire is approximately 0.3951 ohms per 1000 feet. The circuit length is 350 feet, and the current is 38 amps.

First, we find the total resistance for the 350 ft circuit:

[

\text{Resistance} = \text{Length in 1000 ft} \times \text{Resistance per 1000 ft} = 0.35 \times 0.3951 \approx 0.138285 , \text{ohms}

]

Now apply this value to the voltage drop formula:

[

\text{Voltage Drop} = 2 \times 0.35 \times 38 \times 0.3951 \approx 10.25 , \text{volts}

]

It looks like the value calculated should reflect the specific parameters correctly. Option C, which is

Subscribe

Get the latest from Examzify

You can unsubscribe at any time. Read our privacy policy