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Hi all, trying to install Honeywell T4 thermostat to replace my old dial type. there are 4 wires and i believe they are ..... Red - permanent live yellow - switched live blue - neutral green/yellow - earth I realise I don't need neutral and earth and will isolate them. But the switched live is...

Hi all, trying to install Honeywell T4 thermostat to replace my old dial type. there are 4 wires and i believe they are ..... Red - permanent live yellow - switched live blue - neutral green/yellow - earth I realise I don't need neutral and earth and will isolate them. But the switched...