Control panel Wiring and Maintenance MCQ with Answers

Control panel Wiring and Maintenance MCQ with Answers

11) Which accessory is used to insulate and hold the cables, if they pass through punched or drilled hole in control panel?

Answer is:

Grommet

12) Which is the minimum spacing between components and raceways in panel board if system voltage is 415V?

Answer is:

100mm

13) Which colour of earth wire is used in control panel to earth door and cabinet?

Answer is:

Green yellow

14) Which test is to be done regularly in panel board with priority?

Answer is:

Insulation resistance and earth continuity

15) Which is the advantage of periodical maintenance of control panel?

Answer is:

Ensure safety to the machine and operators