Initial Verification Tests
Using a typical test board these videos explain & clearly demonstrate the Initial Verification Tests. They are presented in the order described in the IET’s Guidance Notes No.3
- Preparing for Testing including Safe Isolation.
- Dead Tests:
- Continuity of Protective Conductors.
- Continuity of Ring Circuits – the 3 steps.
- Insulation Resistance – both for the Installation & for Final Circuits
- Polarity – power circuits & lighting circuits inc ES lampholders.
- Live Tests:
- Ze measurement
- Zs measurements
- RCD Tests
- Prospective Fault Current.
Please note: The video in this section depict tests carried out on low voltage (230v) electrical equipment. These tests should not be attempted unless you are a suitably qualified and competent person or under the direct supervision of a suitably qualified and competent person.