WorksheetsRevision for G104A part 1
Total questions: 10
Worksheet time: 20mins
In general with reference to AS3000, which of the following is an acceptable colour for active conductors? Table 3.4
Green
Yellow
Black
white
Which of the mandatory tests detailed in AS3000 prevents electric shock hazards from inadvertent contact? 8.3.10
verification of RCD
correct circuit connections
fault-loop
impedance
insulation resistance
Circuits supplying appliances with sheathed heating elements can have a minimum insulation resistance of not less than: 8.3.6.2(i)
1kΩ
10kΩ
0.2kΩ
10MΩ
Which of the following circuits does NOT require RCD protection in a domestic installation?
socket outlets
lighting
circuits
directly connected hand held electrical equipment
Sub main
Can a low voltage and extra low voltage wiring system be enclosed in a common enclosure? 3.9.8.3(c)
Yes, providing the cables are
installed in a separate compartment of a common cable trunking system
No
Yes, providing a distance of 300mm exists
Yes, providing the wiring system of the lower value consists of triple insulation
The termination of fixed wiring at a socket outlet or lamp holder is: 1.4.72
a point
point of entry
fixed wiring
open wiring
Socket outlets must be connected so that: 4.4.5
the neutral and earth conductors may be connected together in the multiple earthed neutral system
when viewed from the front, the order of connection is Earth, Active and Neutral in a clockwise direction
when viewed from behind the order of connection is earth, Active and Neutral in a clockwise direction
the
Neutral and Earthed conductors are easily interchanged to suit requirements
of the local supply authority
If the insulation resistance of a circuit supplying a water heater gives a reading of 50 kΩ: 8.3.6.2(i)
the wiring should be renewed
the circuit may be connected to the supply
the circuit should be tested again with the element disconnected
the element of the water heater should be replaced with an element that has an insulation resistance in excess of 1MΩ
The temperature of hot water produced in an instantaneous hot water system is dependent on
The setting of a contact-type bi-metal thermostat, mounted on the outside of the vessel, monitoring the vessels temperature
The rate of flow across the heating
elements
The
setting of a stem type thermostat, enclosed by a sheath, located in the
vessel, monitoring the water temperature
The setting of an over-temperature cut-out
An example of Class II equipment would be: 1.4.28
domestic
range
double insulated drill
light
in a pool fed from a SELV supply
hot water system
