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Which test is used to confirm the correct connection of a three-phase socket outlet?
A continuity test is to be carried out and the instrument has been confirmed as being in calibration and undamaged. Which of the following is the remaining check that needs to be carried out to confirm the instrument is suitable to use?
Which of the following is the minimum short circuit test current for a low resistance ohmmeter?
During the initial verification of a new lighting circuit of an existing system the inspector has found a continuity test of 10.5 ohms. The inspector will;
The following insulation resistance readings were recorded on each individual circuit in a consumer unit. 200 M ohm, 100 M ohm, 100 M ohm, 50 M ohm, 100 M ohm, 30 M ohm, 50 M ohm and 200 M ohm What would the test meter indicate if all the circuits were tested together?
Which of the following is the correct voltage for carrying out an insulation resistance test on a 400V three-phase circuit terminated at an isolator
The curved portion of the characteristic of a BSEN 60898 protective device indicates;
Which test would confirm the best disconnection time for a 30mA RCBO used for a fault protection?
A fault has occurred on a circuit which has made the 300mA RCD trip in the distribution circuit but not the 30mA RCD on the final circuit. This is most likely because;
What Voltage setting would you have the meter on for an Insulation Resistance test on a SELV circuit?