Verification of Electrical Insulation Resistance Fig 3.3

Before carrying out Insulation Resistance testing on a complete installation what are some of the things that need to be checked?

• Supply not connected

• Voltage is reading 240V

• No supply is connected

• all electronic devices are switched off

What position do all circuit switches need to be in before testing?

• The OFF position

• The installed position

• The On position

• The open position

Before testing and having the the circuit switches in the correct position, what do you need to check?

• That no sensitive electronic equipment is connected

• That the polarities are correct

• That they are red

• that the earth is connected

Which conductors do you join together before applying the metering equipment?

• The earths

• All live conductors

• The actives

• The neutrals

What is the MEN and where do we find it?

• Multiple Neutral earth between the Neutral link and the earth link

• Main Neutral earth between the Neutral link and the earth link

• above the toilets

• On the back of the board

What setting should the meter be able to read?

• Ohms

• Kilo Ohms

• milli Ohms

• Mega Ohms

When connecting the test leads they need to be connected to...?

• the neutral and the active

• the neutral and the earth

• The neutral link and the earth bar

• connected together

If you get a reading below the required outcome what steps should you take?

• Test the consumer mains

• Test the submains

• each final sub circuit separately

• Take a break and try again

What is the minimum reading we are testing for?

• 0.5 Ohms

• 1 Ohm

• 1 M Ohm

• > 1 M ohm

When commencing testing what is it important to do?

• Check the power works

• Check the meter is functioning correctly

• Check the meter is functioning correctly and the test leads are functioning correctly

• Check the wiring connections