ME3011FP Tut 22

The cutting off an electrical installation, a circuit of an item of equipment from every source of electrical energy is referred to as

• tripping

• isolation

• insulation

• switching

Device used for isolation must disconnect

• all live conductors

• protective cables only

• all neutral conductors only

• live conductor and protective cables

An energy meter is also known as

• voltmeter

• ammeter

• mega-ohm meter

• kilowatt hours meter

The consumer's section comprises of double-pole main switch, circuit breakers and

• meter

• service MCB

• service cable

• distribution board

Which one of the following devices should NOT be used as a means of isolation?

• Fuselinks

• Circuit breakers

• Semiconductor devices

• Plugs and socket outlets

The rapid cutting off of electrical energy manually to remove any hazard to persons, livestock or property which may occur unexpectedly is termed as

• tripping

• isolation

• functional switching

• emergency switching