GMJ 6189 electrical quiz 2

Which device protects overloading of the meter tails?

• BS 88 cut-out fuse

• RCD BS EN 61008

• RCBO

• MET.

Insulated single core thermoplastic cable has no sheath, so it requires which of the following?

• Wrapping in insulating tape

• Enclosing in conduit or trunking

• Clipping to a non-conductive surface

• Threaded through joints and never exposed.

Which type of cable would supply an immersion heater?

• Three-core thermally insulated flex

• 180°C thermosetting flexible cable

• 60-65°C thermoplastic flex

• General duty heat-resistant flex

Which device on a multifunctional gas valve controls the initial gas flow to a burner?

• Solenoid valve

• Flame supervision device

• Pressure regulator

• The programmer

The micro switch located in a two-port zone valve does which of the following once it is energised via a thermostat?

• Sends a signal to the pump and boiler to turn on

• Turns off the programmer

• Energises the thermostat

• All of the above

GS38 recommends that an electrician should not use which of the following voltage detection instruments?

• Neon indicator screwdriver

• Two-pole voltage detector

• Proprietary bulb test lamp

• LED test lamp with integrated audible warning

A test for shorting a circuit can be carried out in which situation?

• When appliances are operating

• While the circuit is isolated

• At the same time as a loop impedance test

• When a building is empty

Which of the British standards listed below also knows the IET Wiring Regulations?

• BS 6004

• BS 7671

• BS 7211

• BS 1361

Manufacturers’ technical information shows electrical components and their locations in which way?

• Lists and numbers

• Exploded charts

• Layout diagram

• Pictures and descriptors.

If a defect is discovered during the inspection and testing of an electrical installation, what should be done?

• Bypass the defect and make safe

• Before the certificate is issued to the person ordering the work, ensure the fault or defect is rectified

• Isolate the whole system and leave the property

• Make a note of the defect on the completed certificate.