Red Seal Industrial Electrician Practice Exam

What is the color code for neutral conductors in Canada?

1. Green

2. Black

3. Blue or white

4. Red

The correct answer is: Blue or white

In Canada, the color code for neutral conductors is white, and in some cases, blue is also used, particularly in multi-conductor cables that may have different insulation colors. The neutral conductor serves an important role as it carries the current back to the source, completing the electrical circuit. The use of white or blue helps to ensure that electricians can easily identify the neutral from the other conductors, which have distinct color codes for phases and ground. It's essential for safety and efficiency in electrical installations that these color codes are adhered to, as this reduces the risk of errors during installation or maintenance, which could lead to electrical faults or hazards. The other color choices are designated for specific roles: green is for ground conductors, black is typically used for phase or active conductors, and red is also used for phase conductors in certain systems. Understanding this color coding is vital for anyone involved in industrial electrical work.