Electrical Fault-Finding on Plumbing Equipment Quiz

According to the Electricity at Works Regulations 1989, what is the preferred state of electrical supplies before work begins?

• Energized
• Dead
• Partially energized
• Disconnected

What is the first step in diagnosing electrical faults according to the presentation?

• Visual inspection
• Communication with the client
• Testing components
• Reviewing manufacturer’s instructions

Which of the following is NOT a recommended practice when conducting live testing?

• Using approved testing equipment
• Informing others in the vicinity
• Using homemade test lamps
• Protecting the area with barriers

What should be checked first when troubleshooting a heating system's programmer?

• Switched live outputs
• Power supply
• Thermostat operation
• Zone valve status

When testing a thermostat, what indicates that the switch is closed and calling for heat?

• OL reading
• High resistance
• Low resistance
• No reading

What is a common issue with zone valves in heating systems?

• They overheat
• They fail to operate
• They create short circuits
• They are always open

What does an infinity (OL) reading indicate when testing a zone valve motor?

• The motor is operational
• The motor is faulty
• The motor is overheating
• The motor is under load

What is the purpose of the boiler display panel?

• To indicate the temperature
• To show fault codes
• To control the thermostat
• To manage the water flow

What should be checked if a boiler is not operating after a lock-out?

• Thermostat settings
• Fuel and electrical supply
• Zone valve status
• Immersion heater

What is a dead short in electrical terms?

• A break in the circuit
• A direct contact between live conductor and earth
• A malfunctioning component
• An open circuit