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Assessment 6- Unit 16 Verify compliance of low voltage systems
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Q1
Score: 1
Residual current device.
Motor rated fuse.
Starter contactor
Surge protective device
Q2
Score: 1
A lighting circuit
A water heater circuit
A security alarm circuit
A three-phase motor circuit
Q3
Score: 1
Harzadous
Restricted
Dangerous
Confined
Q4
Score: 1
To provide main equipotential bonding to the system earth
To connect exposed and extraneous conductive parts to the system earth.
To provide a connection to earth necessary for proper operation of the equipment.
To connect the live conductors to earth so the equipment is protected against earth faults
Q5
Score: 1
How this will affect a continuity of protective conductor test
Effect this may have on other parts of the installation
Current and voltage rating of the isolator
How live testing will be carried out with the isolator open
Q6
Score: 1
Before being put into service
After all testing has been carried out.
Once the supply has been switched on.
Once the earthing system has been tested
Q7
Score: 1
Add together the fuse rating for each circuit.
Add together the individual connected load currents.
Determine the load on each phase and apply diversity
Determine the load on each phase and add the values
Q8
Score: 1
It must be fully calibrated
It must be fitted with a shunt
It must be tested for insulation resistance
It must be checked against a known supply
Q9
Score: 1
Earth Leakage
Overload
Undervoltage
Overvoltage
Q10
Score: 1
Large circuit currents.
Large short circuit currents.
Out of balance circuit currents
Reduction in circuit currents
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