Cable Calculations
Authored by Liam Williams
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14 questions
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1.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Maximum disconnection time for a 32A submain 230V
2.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Maximum disconnection time for a 16A immersion 230V.
3.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Evie is setting up a new electrical system in her home and has chosen a 25 sqmm line conductor. Select an appropriate earthing conductor size for her setup.
16 sqmm
25 sqmm
10 sqmm
6 sqmm
4.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
State the INSTALLATION METHOD for a cable installed in conduit on a wall
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Evie is calculating the 'tabulated current' for an electrical circuit. Select the correct formula she should use.
Ib/correction factor
In/correction factor
It x correction factor
Ib x correction factor
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A circuit has a Ze value of 0.55 ohms. If the (R1+R2) value is 0.85 ohms, state the value of Zs for the circuit
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Identify the correct symbol for the rating of the protective device
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