Double points
What is the function of a plan legend?
It identifies what the symbols on the plan represent
What is the most common cable for submains?
XLPE
An EMF through a chemical reaction would best describe?
Batteries
Maximum earth resistance
0.5Ω
When fighting a fire involving live electrical equipment, what type of fire extinguisher should not be used?
Water - Gas expelled
What best describes a site plan?
Shows the shape and dimension of a site
What is the most suitable cable for general fixed wiring?
Flat TPS
If a multimeter doesn't have an auto-ranging function, to get the desired result you would
Start at the highest range and work towards the lowest until you get the desired reading
RCD type 2 operating numbers
30mA
300ms
According to AS/NZS3760 what is the testing interval for equipment in a workshop?
Every 6 months
What action would raise awareness of the importance of sustainability & environmental concerns?
Installing environmental safety signs and labels
A circuit with a break in the conductors said to be what type of fault?
Open circuit
What is the best application for a lead acid battery?
Vehicle electrical system
Maximum appliance resistance
1Ω
What type of fire extinguisher is safe to use of live electrical equipment?
C02
Carbon dioxide
The maximum current that the protective device is able to safely best describes which protective device term?
Breaking capacity
Where must the neutral be terminated in an Edison screw light fitting?
Outer sheath
Kirchoffs voltage law for series volt drop
The sum of all the volt drops are equal to the supply voltage
Vt = Vd1 + Vd2
RCD type 1 operating numbers
10mA
40ms
Which of the following is an explanation of how an RCD protects a user from an electric shock?
When an RCD detects an imbalance between phase and neutral, it disconnects the supply within a specified time
A 1.5kw heater is used for 10 hours per day for 5 days, if the cost per kWh is $0.35, what's the total cost of using the heater?
$26.25
What is the minimum distance between ELV cables & LV cables without a barrier in between?
50mm
What are the types of tripping mechanisms in a MCB?
Thermal & Magnetic
MIMS cable insulation value
0.01MΩ
10,000Ω
A low reading on a resistance test could indicate what type of fault?
Short circuit