2365-L3 625

identify the type of emergency light fitting the remains lit continuously

• sustained
• contained
• maintained
• non maintained

identify the rating of an RCD used for additional protection for buried cables in walls.

• 100mA
• 20mA
• 13A
• 30mA

when applying DIVERSITY to discharge lighting (such as fluorescent lamps), identify the multiplication factor that should be applied to the lamp wattage

• 2
• 1.8
• 10
• 5.5

identify the rated short-circuit capacity of a BS88-6 device at 240v, as detailed in the On Site guide

• 16kA
• 33kA
• 16.5kA
• 31.5kA

how can long runs of pvc conduit be installed to reduce the prospect of distorting and buckling due to large changes in ambient temperature.

• greater distances between saddles
• pvc conduit must not be installed in these environments
• regular through-boxes are used throughout the run
• use expansion couplers

identify the maximum 'measured' Zs value allowed for a type B 16A circuit breaker to BSEN60898, as detailed in the On Site guide

• 3.5 ohms
• 1.09 ohms
• 2.2 ohms
• 1.58 ohms

if an overcurrent occurs in an otherwise healthy circuit, this would be called ........

• an open circuit
• an earth fault
• a short circuit
• an overload

when applying DIVERSITY to a water heater in a small shop, identify the percentage of total current demand allowed if the heater is thermostatically controlled

• 0.75
• not allowed
• 0.9
• 0.66

when applying DIVERSITY to a lighting circuit in a small hotel, identify the percentage of total current demand allowed

• 0.75
• 0.66
• 0.9
• 100% (full load)

identify the device that operates using the 'current-balance' effect.

• BS88-2
• BSEN 60898
• BSEN 61009
• RCD