Electrical Test Questions L2

Which one of the following should be carried out before any electrical work takes place?

• Safe Isolation

• Safe Insulation

• Safe Continuity

• Safe Polarity

      Which one of the following units should be used when checking if a circuit is dead?

• Multi-meter

• Proving Unit

• RCD

• OHMs

       Which one of the following tests should be carried out on insulation?

• Polarity

• Resistance

• Impedance

• Continuity

        Which one of the following tests should be carried out to ensure that phase and neutral are not cross connected?

• Polarity

• Resistance

• Impedance

• Continuity

      The RCD on a domestic circuit should have a milliamp (mA) rating of

• 30

• 40

• 50

• 60

       Which part of the Building Regulations relates to electrical safety?

• Part B

• Part P

• Part E

• Part M

      As well as a proving unit, which one of the following is also used to check if a circuit is dead?

• Approved fuse tester

• Approved manometer

• Approved multi-meter

• Approved voltage indicator

      How should a fused spur be correctly isolated before any electrical work on the circuit takes place?

• Isolate by removing the fuse

• Isolate at the consumer unit by switching off the feed

•   Isolate by removing the cable to the appliance.

• Isolate at the consumer unit with an approved locking device

To reduce the risk of electric shock to the engineer, GS38 recommends the maximum length of exposed metal tips on equipment test probes should be

• 16mm

• 10mm

• 6mm

• 4mm

When a polarity test is carried out, which instrument is used?

• Earth loop impedance tester

• Low resistance ohmmeter

• PAT tester

• Proving device