CONTROL PANEL WIRING AND MAINTENANCE - Practice Mode

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

Grommet PVC channel Wire clips Wire sleeves

Correct Answer: Grommet

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

50 mm 100mm 60 mm 75 mm

Correct Answer: 100mm

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

Red Yellow Blue Green yellow

Correct Answer: Green yellow

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

Main power contacts condition Insulation resistance and earth continuity MCB connection Filter and cooling fan

Correct Answer: Insulation resistance and earth continuity

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

Reduces power cost Assured over loading Ensure safety to the machine and operators Helps continuos operation

Correct Answer: Ensure safety to the machine and operators

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