Wiring up a room thermostat with no neutral

[andyr]

Hi. I want to replace an ordinary 2wire(+ earth) roomstat with one of these electronic roomstats but it requires neutral - I know it will most probably break all the rules and regulations but if I used the earth as neutral could i do that would it work and would it be safe? - I cannot easily wire up a neutral wire to the roomstat.

Thanks.

Andy.

[Henry]

You must use a digi stat if you only have 2 wires (live in live out) no earth or neutral required DO NOT use earth to carry voltage

Best way is use Danfoss or Honeywell (Voltage Free)

[SimonD]

You can use the earth wire for a neutral if;

it is fully insulated throughout its length, not just sheathed ie: flexible cable

Both ends of the above are clearly marked with a blue identifier.



But a Honeywell CM907 would be a good bet and only needs 2 wires, as previously mentioned.