Electrical Systems Quiz 1

What type of clamp should you use when working on a system that has a pipework section to be removed?

• Permanent polarity bonding clamp
• Permanent earth continuity bonding clamp
• Temporary polarity bonding clamp
• Temporary earth continuity bonding clamp

An electrical system containing an mcb that is to be safely isolated requires:

• fitting a locking device.
• removing the mcb and keeping it in your pocket.
• removing the mcb and keeping it in your toolbox.
• sticking a piece of tape over the mcb.

Test probes used on approved testing devices must have a minimum exposed tip, not exceeding:

• 4 mm.
• 3 mm.
• 2 mm
• 1 mm.

When testing the continuity of bonding cables, you would expect:

• a very high reading.
• no reading at all.
• a variable reading
• a very low reading

A fault in an electrical circuit can be caused by:

• low load.
• heavy load.
• overload.
• limited load.

which 2 types of test equipment is best carried out for safe isolation:

• a multimeter
• an ohmmeter.
• a neon screwdriver
• a voltage indicator

Electrical connections can be made using:

• slice terminals
• strip connectors
• segment connectors.
• segment terminals.

A radiator installed adjacent to an electric shower in a bathroom could require:

• supplementary bonding.
• main bonding.
• minor bonding.
• additional bonding.

A test for polarity is best carried out with:

• an extension lead.
• an ohmmeter.
• an insulation resistance tester.
• neon screwdriver.

You have been called to a pump that requires replacement. What is the first thing you must do?

• Turn off the water supply
• Visually check the installation
• Safely isolate the electricity supply
• Remove the pump