How do you test the continuity of a protective conductor?

Testing protective conductors For all protective conductors, including main and supplementary bonding conductors, electricians must perform continuity test using a low-reading ohmmeter. For main equipotential bonding, there is no single fixed value of resistance above which the conductor would be deemed unsuitable.

What is the purpose of the test of continuity of main protective bonding conductors?

The purpose of testing protective bonding conductor is to ensure a sufficient earth path, where in the event of a fault the exposed and extraneous conductive parts will have the same potential. That is why it is called ‘equipotential bonding’.

What is circuit protective conductor?

The circuit protective conductor (increasingly called the ‘c.p.c.’) is a system of conductors joining together all exposed conductive parts and connecting them to the main earthing terminal. Strictly speaking, the term includes the earthing conductor as well as the equipotential bonding conductors.

What is an electrical continuity test?

A continuity test is a quick check to see if a circuit is open or closed. During a continuity test, a digital multimeter sends a small current through the circuit to measure resistance in the circuit. A meter with a continuity beeper briefly sounds off when it detects a closed circuit.

How is continuity of circuit protective conductors ( CPC ) carried out?

Continuity of Circuit Protective Conductors (CPC) The test is carried out as follows: Temporarily link the line conductor to the CPC in the Consumer Unit. Test between the line and the CPC at each accessory point e.g. a ceiling rose, switch or socket outlet.

Why do you need to test the continuity of circuit?

Testing the continuity of the circuit protective conductor (CPC) is absolutely essential to confirm that your installation meets the requirements of the Wiring Regulations as well as to complete exams in accordance with the requirements of awarding bodies.

How is continuity testing carried out in a MCB?

Before everything, a safe isolation procedure must be carried out. Step 1. Select the circuit to be tested in the distribution board and remove the Line conductor from the MCB Step 2. Connect the Line conductor to the Earth conductor (for simplicity, connect it to one of the spare terminals on the Earth bar).

What are the steps in a continuity test?

The Continuity Test sequence: Before everything, a safe isolation procedure must be carried out. Step 1. Select the circuit to be tested in the distribution board and remove the Line conductor from the MCB. Step 2. Connect the Line conductor to the Earth conductor (for simplicity, connect it to one of the spare terminals on the Earth bar).