The ground wire should not be smaller than No _________ copper
Correct answer: D. 10
- A. 2
- B. 4
- C. 6
- D. 10
Explanation
A grounding conductor must have sufficient cross-sectional area to carry fault current safely without overheating; the stated minimum in this wiring convention is No. 10 copper. Smaller numbers such as No. 6, 4, or 2 represent thicker conductors, but they are not the specified minimum.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? [email protected]
Practise Wiring, Installation and Safety
115 free Wiring, Installation and Safety MCQs from Electrical Engineering, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Discussion
Stuck on an option, or know a faster way to get there? Ask or explain it here.
No comments yet. Be the first to explain this one.
Exams that ask Electrical Engineering questions like this
Electrical Engineering is on 2 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
More Wiring, Installation and Safety questions
The delay fuses are used for the protection of ___________?
Which of the following is the least expensive protection for overcurrent is low voltage system ?
H.R.C. fuses provide best protection against________________?
With which of the following, a circuit breaker must be equipped for remote operation ?
In order to remove static electricity from machinery___________?
To prevent the generation of static charges on rubber or flat leather__________?