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A 2.5mm/1.5mm (Twin/CPC) cable is used for a ring final circuit. What factor would you apply to the r1 value to calculate the expected value of r2?
When completing the R1 + R2 Continuity test on a radial circuit, a link is placed between Line and CPC at the board. Where and what would you test between to obtain your highest R1 + R2 value?
What Voltage do you set your meter to for Insulation Resistance, if you are testing circuits with potentially sensitive equipment connected?
What position should all switches be in when testing Insulation Resistance?
What is the minimum acceptable value for an Insulation Resistance test, on an ELV circuit set to 250V D.C?
When testing polarity on a lighting circuit with Edison screw lamp holders, what are we specifically testing for?
How is Polarity checked on a ring final circuit?
The Breaking capacity of protective devices must be over the PFC value.
What is the maximum Ze value for a TN-C-S system?
What is the maximum Earth Fault Loop Impedance Value after the rule of thumb has been applied, for a 32A BSEN60898 type B?
What is the maximum Earth Fault Loop Impedance Value after the rule of thumb has been applied, for a 6A BSEN60898 type C?
What is the maximum Earth Fault Loop Impedance Value after the rule of thumb has been applied, for a 20A BSEN60898 type B?
Which of the following is not a functional test?