Inspection & Testing

Sample questions

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These sample questions are practice material and have not yet been reviewed by a qualified electrician. They are for revision only — working to BS 7671 on site is never decided by a quiz.

1. Q1.Which group of tests must be completed before an installation is first energised?

   • Live tests
   • Dead tests
   • Functional tests only
   • RCD trip-time tests

2. Q2.What does an insulation-resistance test look for?

   • Breaks in a ring final circuit
   • Leakage paths between conductors
   • The supply frequency
   • Lamp wattage

3. Q3.Which test proves that single-pole switches are connected in the line conductor?

   • Polarity
   • Continuity of bonding
   • RCD trip time
   • Prospective fault current

4. Q4.Zs is the measured value of what?

   • Insulation resistance
   • Earth fault loop impedance
   • Voltage drop
   • Supply frequency