the fuses are connected in the phase wire and the single pole switches are connected in the neutral wire

the fuses are connected in the neutral wire and the single pole switches are connected in the phase wire

the fuses and the single pole switches are connected in the phase wire

the fuses and the single pole switches are connected in the neutral wire

Maintenance schedule needs to be decided, based on the maintenance reports entered in the maintenance card

Maintenance could be done either during the working of the machine or during short interval down periods

Maintenance is performed at irregular frequencies

Maintenance is performed, if a machine has a fault or defect.

0 megohm

1 megohm

500 megohm

infinity megohm

5 points

10 points

15 points

20 points

Four

Three

Two

One