Connecting Thermostat to boiler
- Thread starter Jamespf1
- Start date
0.75mm² is the usual choice. 0.5mm² theoretically could be used, but is very thin and far more likely to break.
Larger sizes will be more difficult to install as the terminals on thermostats are usually tiny.
Larger sizes will be more difficult to install as the terminals on thermostats are usually tiny.
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