Lighting Circuits and Electrical Fault finding

What is the normal value in amperes, of the circuit breaker (protective device), that is used for a lighting circuit?

• 2 Amps

• 6 Amps

• 16 Amps

• 32 Amps

Lighting circuits in domestic homes, in the United Kingdom, are normally wired, using what c.s.a. (diameter) conductors?

• 1.5 mm squared

• 2.5 mm squared

• 4 mm squared

• 6 mm squared

This method of wiring, requires the supply feed, to go straight, to the switch, where in an installation, that uses 2 core and earth. What is this method called?

• One plate method

• Two plate method

• Three plate method

• Four plate method

This method of wiring a, a lighting circuit, involves the supply feed to go to the ceiling rose and a switch line, to go to the switch and a return switch wire back to the luminaire terminal in the ceiling rose. What is this method called?

• One plate method

• Two plate method

• Three plate method

• Four plate method

When a fault current flows from a live conductor to earth. What is it's proper name?

• Short circuit

• Closed circuit

• Earth fault

• Line fault

When there is no complete path for an electrical current to flow, what is it called?

• Closed circuit

• Open circuit

• Short circuit

• Long circuit

When the length or resistance of a circuit is reduced, and a nail goes through a cable and creates continuity between conductors, resulting in an overcurrent. What is the name of this type of fault?

• Open circuit

• Earth fault

• Short circuit

• Long circuit

When conductors have been connected into the wrong terminals. What is this called?

• Short circuit

• Cross polarity

• Open circuit

• Interconnection of conductors

When the line conductor and the neutral conductors have been connected the wrong way around. What is is called?

• Cross polarity

• Short circuit

• Open circuit

• High resistive joint

When the flow of electrical current is restricted, due to a loose connection in a terminal. What is that called?

• Cross polarity

• Short circuit

• Open circuit

• High resistance