Inspection & Testing

What PART of BS7671 concerns itself with Inspection and Testing?

• PART 7

• PART 6

• PART 4

• PART 2

Which one of the following 'dead' tests should also be repeated 'live'?

• continuity of bonding conductors

• ring continuity test

• insulation resistance test

• polarity test

Which test is used to prove that the circuit under test has no dangerous short-circuits PRIOR to the circuit being made 'live'?

• continuity of cpc

• polarity

• continuity of ring final conductors

• insulation resistance

What is the instrument test voltage for an insulation resistance test on a 230v AC lighting circuit?

• 1000v dc

• 500v dc

• 110v dc

• 250v dc

What is the instrument test voltage for an insulation resistance test on a 400v AC radial circuit?

• 500v dc

• 110v dc

• 1000v dc

• 250v dc

What is the MINIMUM acceptable value of insulation resistance for a 230v ring main circuit?

• 0.5M ohms

• 0.25M ohms

• 2.0M ohms

• 1.0M ohms

Which test proves that the 'live' conductor is connected to the centre-pin in an ES (edison-screw) light fitting?

• insulation resistance

• polarity

• continuity of cpc

• continuity of ring final circuit

Identify the scale used for carrying out a continuity test?

• volts

• M ohms

• low ohms

• kA

What is the purpose of a Residual Current Device (RCD) in an electrical circuit?

• To measure the voltage

• To protect against overcurrent

• To detect earth faults

• To regulate the current flow

What is the minimum insulation resistance value for a new installation?

• 0.5 MΩ

• 1 MΩ

• 2 MΩ

• 5 MΩ