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Assessment 4- Unit 16 Verify compliance of low voltage systems
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Q1
Score: 1
During the erection period
During testing upon completion
After testing upon completion
Before testing upon completion
Q2
Score: 1
Check that the electrical appliance will operate properly
Verify that the insulation of current carrying components are capable of withstanding the normal supply voltage
Verify that the resistance of the protective earthing conductor does not exceed 1MΩ
Verify that the insulation of current carrying components is capable of withstanding the maximum load current
Q3
Score: 1
Voltage and cross-sectional area
Current and resistance
Resistance and cross-sectional area
Current and voltage
Q4
Score: 1
every fuse and single pole device is connected in the line conductor only
there is sufficiently low resistance to operate the protective device within its limits
there is sufficient circuit protection
there is no breakdown of the conductor insulation
Q5
Score: 1
Maximum demand of the installation
The rating of the circuit protective device
The CSA of the tails
The The prospective short-circuit current at the origin of the installation of the tails
Q6
Score: 1
Taking the sum of all the protective devices from any CCU
Taking into account that not all loads will be switched on at the same time
Taking into account that all loads doubtless will be engaged at the same time
Ensuring that an economical and reliable design preference is utilized
Q7
Score: 1
Metal conduit
Trunking and tray installation
PVC cables
PVC/SWA cables
Q8
Score: 1
Cable size
Grouping factor
Design current
Overload current
Q9
Score: 1
The cross-sectional area of the flexible cord conductors
The colors of the flexible cord conductors
The type of supply, a.c. or d.c c.
The number of cores in the flexible cord
Q10
Score: 1
2.5V
5.4V
6V
16.6V
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