1) What is a CONTINUITY TESTER? a) The person responsible for testing continuity on an installation b) A safety device to ensure your equipment is calibrated c) The approved device for Safe Isolation d) A device used to check if an electrical path is continuous, typically using a light or audible tone. 2) What does OPEN CIRCUIT mean? a) The presence of a complete and unbroken path for electrical current to flow between two points. b) A measure of how well insulation materials prevent the leakage of electrical current. c) A break in an electrical circuit that prevents the flow of current, resulting in no continuity. d) A circuit that's ready for testing 3) What does CONTINUITY mean? a) A break in an electrical circuit that prevents the flow of current, resulting in no continuity. b) A wiring configuration used in some countries where the power cable starts and ends at the same circuit breaker c) A long test lead used in conjunction with a test instrument to measure continuity or resistance over a distance. d) The presence of a complete and unbroken path for electrical current to flow between two points. 4) Why is Nulling your test leads so important? a) Zeroing out the resistance of the test leads improves the accuracy of the readings taken b) To discharge any static electricity that still remains in the conductor c) Nulling your test leads keeps them clean and safe d) To comply with HSE regulations 5) What does CLOSED CIRCUIT mean? a) An electrical circuit that isn't yet ready for testing b) A complete electrical path that allows current to flow, indicating continuity. c) A protective conductor that connects conductive parts of an electrical installation to the main earthing terminal d) A break in an electrical circuit that prevents the flow of current, resulting in no continuity. 6) Which one of these items is a DMM (digital multi meter)? a) b) c) d) 7) What is the process for Safe Isolation? a) A.L.I.V.E. - Approved kit, Lock off, Identify, Verify, and Examine. b) I.S.O.L.A.T.E. - Identify, Switch Off, Lockout, Assess, Test, Error check c) P.T.P.L. - Prove it, Test it, Prove it, Lock it, d) Answers A, B and C are all correct 8) When testing for CONTINUITY, what would be a good reading on your test meter? a) 0.01Ω b) 0.1Ω c) 1.0Ω d) 10.0Ω 9) When testing for CONTINUITY, what would be a poor reading on your test meter? a) 0.01Ω b) 0.1Ω c) 1.0Ω d) 10.0Ω 10) What might a high resistance reading during a continuity test suggest? a) A loose terminal b) A poor electrical connection c) Corrosion at a cable joint d) It is a high current circuit 11) What does EAWR refer to? a) EAWR - Electricians Always Wear Rubber b) EAWR - Engineers Avoid Working Rules c) EAWR - Electricity At Work Regulations d) EAWR - Education Assists When Remembering 12) Why should continuity testing only be done on de-energized (dead) circuit? a) Eliminates the risk of electric shock b) Testing a live circuit for continuity can damage the test equipment c) Testing of live circuits won't show faults d) To comply with regulation 12 of the EAWR 1989 13) When were the Electricity At Work Regulations (EAWR) written and then enforced? a) Written in1996, enforced in 1997 b) Written in 2001, enforced in 2003 c) Written in 1989, enforced in 1990 d) Written in 1971, enforced in 1976 14) What is Insulation Resistance? a) A measure of the depth of electrical resistance b) A measure of how effectively an insulating material resists the flow of electrical current c) The resistance to the flow of electrical current d) An electrician not wanting to wear a warm coat 15) What test instrument would you use to measure Insulation Resistance? a) Digital Multi Meter (DMM) b) Multi-Function Tester (MFT) c) Megohmmeter d) Earth loop impedance tester 16) When testing for INSULATION RESISTANCE, what would be the best reading on your test meter? a) 0.8Ω b) 80.0Ω c) 800.0Ω d) 8000.0Ω 17) When testing for INSULATION RESISTANCE, what might a reading of 0.0Ω mean? a) The test meter leads are connected incorrectly b) The meter is broken c) There is a 'dead short' between the cables being tested d) There is no resistance, which is good 18) Which of the following tests are 'dead' tests (i.e. the circuit must be safely isolated first)? a) Continuity b) Insulation resistance c) Ze (earth loop impedance) d) Supply polarity

Testing Electrical Circuits

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