CONTROL PANEL WIRING - Quiz

1) Which switch is operated at OFF load condition?

Limit switch Isolating switch Two way switch Push button switch

2) What is the reason for providing two separate Earthing in panel boar

Panel board is made in metal box Control the stray field in the p Reduce the voltage drop in panel board Ensure one earthing in case of other failure

3) Which circuit, the limit switches are used?

Lift circuits Street lighting Motor control circuits Domestic power circuits

4) How the control circuit voltage and power in a contactor are to be selected?

As per rated current As per supply voltage As per no volt coil rating As per the type of supply

5) What is the criteria to select the contactor?

Type of supply Type of load connected ly voltage and load Place of use the contactor