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My thoughts as well, but aren't they supposed to label PME supplies? If it helps, the supply is approx 2.5 years old and is in Fife (Scottish Power).

I'm trying to identify what type of electricity suppy I have, its either TN-S or TN-C-S but I can't tell for sure because the earth connection to the incoming supply is hidden under a plastic cover. Can anyone tell from these photos, or do I have to lift the plastic cover (green arrow on 2nd...

Thanks for the suggestion, I give it a try.

Hello all, My 2 year old Suprima 40 boiler isn't heating properly :( , it seems to only heat water to about 60 C even when the thermostat is turned to maximum. The boiler is feeding a vented system comprising 11 radiators plus hot water tank. Thanks to this board I'm aware that this...