312 Electrical work & control of plumbing & heating Install 1 Qu

Which part of the Building Regulations covers electrical installation?

• Part J

• Part L

• Part G

• Part P

Which of the following is not classed as minor works?

• The connection of an immersion heater with new flex cable from an existing fused spur

• The installation of a replacement heating circulator

• The replacement of a consumer unit

• Fault-finding on a central heating control system

The 18th Edition IET Wiring Regulations is also known as which British Standard document?

• BS 7671

• BS 6351

• BS 5476

• BS 6644

What fault is shown in this image?

• Incorrect continuity

• Incorrect polarity

• Reversed phases

• Reversed neutral

At what stage should a proving unit be used?

• After confirming that the supply is dead

• Before confirming that the supply is dead

• Before and after confirming that the supply is dead

• Before and after confirming that the current is correct

What minimum size should the earth cable be between a TN-S supply and the MET connection?

• 6mm²

• 10mm²

• 12mm²

• 16mm²

What device is being checked in the image below?

• Thermistor

• Capacitor

• Thermocouple

• Relay

How does the component in the image operate?

• It corrects the power factor altered by inductive loads

• It creates a small voltage through the exchange of electrons under heating conditions

• It increases and decreases its resistance when subjected to changes of temperature

• It makes a contact using electromagnetism when a current is applied to its coil

Which component is designed to disconnect within 0.4 seconds if an imbalance is detected between live and neutral?

• MCB

• RCD

• Cartridge fuse

• ECO

What piece of test equipment is the safest to use to determine the run current of a pump winding whilst operating?

• Clamp meter

• Ammeter in series

• Ammeter in parallel

• Insulation and continuity tester