Plumbing Level 2 - PP3 - Electrical principles and processes

What should be used to test the voltage indicator on a known source?

• Multimeter

• Clamp meter

• Oscilloscope

• Proving unit

What is the HSE testing equipment standard referred to in the text?

• GS38

• ISO9001

• IEC 61010

• BS 7671

What should be done to ensure the supply is not switched back on by mistake?

• Remove the plug

• Disconnect the appliance

• Lock and label

• Turn off the main switch

Where should you identify the source for the supply?

• At the power outlet

• At the main switch

• At the appliance

• At the MCB or fuse

What should be done after switching off the MCB or removing the fuse?

• Test the appliance

• Lock and label

• Check the voltage

• Disconnect the appliance