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WorksheetsS Plan Plus wiring
Total questions: 10
Worksheet time: 5mins
What colour wire from a two port zone valve sends power to the boiler and pump?
Orange
Brown
Grey
Blue
What colour wire from the two port zone valve is permanent live and connected to terminal 1 of the 10 way?
Grey
Orange
Brown
Yellow/Green
What terminal in the 10 way should all neutral (Blue) wires be connected to?
1
2
3
10
What wires are terminated in terminal 3 of the 10 way?
Earth
Live
Neutral
Pump/Boiler switch live
When using different colour cables as switch wires, you must ......
Identify it as a switch live by marking with BROWN tape
Identify it as a switch live by marking with RED tape
Do nothing. The person carrying out the work will be competent and know which cable is live.
Explain to the customer which wire is the switch live
When installing a mechanical room thermostat like the one in the image, what is the correct method of wiring?
Power in to terminal 1, out on terminal 3, with neutral connected to terminal 2.
Power in to terminal 3, out on terminal 1, with neutral connected to terminal 2.
Power in to terminal 1, out on terminal 3, neutral is not needed.
Power in to terminal 1, out on terminal 2, neutral is not needed.
When wiring a cylinder thermostat like the one in the image, the correct method of wiring is ........
Power in to terminal 1 and out on Common
Power in to Common and out on terminal 1
Either way is fine.
Power in to terminal 1 and out on terminal 2
Depending on what type of boiler you have, it may not be necessary to install a permanent live as well as a switch live. What document would you reference to confirm the wiring arrangement?
IET wiring regulations
Manufacturers Instructions
BS 7671
Gas Safety (Installation and Use) Regulations
What size cartridge fuse is suitable for the electrical supply to a typical domestic heating system?
3 amp
5 amp
13 amp
32 amp
What is the term we use to describe the wiring arrangement that prevents your boiler from firing when there is no call for heat?
Boiler interlock
Boiler cycling
Thermo mechanical lock
Electrolytic corrosion
