Electrical Wiring Colors -Multiple Choice Questions Quiz

Question 1: In electrical wiring, which color is typically used for the 'ground' or 'earth' wire?

(a) Red
(b) Green
(c) Black
(d) Blue

Question 2: Which color is generally used for the 'neutral' wire in electrical installations?

(a) White
(b) Green
(c) Red
(d) Yellow

Question 3: Which color is commonly used for the 'live' or 'hot' wire in electrical wiring?

(a) Red
(b) Green
(c) Black
(d) Blue

Question 4: In a three-phase electrical system, which color is used for one of the 'phase' wires?

(a) Brown
(b) Green
(c) Black
(d) Blue

Question 5: Which color is used for the 'switched live' wire in electrical wiring for lighting circuits?

(a) Yellow
(b) Green
(c) Red
(d) Blue

Question 6: Which color is used for the 'traveler' wires in a three-way switch configuration?

(a) White
(b) Green
(c) Black
(d) Yellow

Question 7: Which color is used for the 'line' wire in a single-phase electrical system?

(a) Blue
(b) Green
(c) Red
(d) Brown

Question 8: Which color is used for the 'load' wire in a single-phase electrical system?

(a) White
(b) Green
(c) Red
(d) Blue

Question 9: In direct current (DC) wiring, which color is commonly used for the positive (+) wire?

(a) Brown
(b) Green
(c) Red
(d) Blue

Question 10: In electrical wiring, which color is used for the 'auxiliary' or 'signal' wire?

(a) Orange
(b) Green
(c) Black
(d) Gray

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Results:

Total score: /10

Answer key:

Question 1: b

Question 2: a

Question 3: c

Question 4: a

Question 5: c

Question 6: d

Question 7: d

Question 8: d

Question 9: c

Question 10: a