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Hi , got a glowworm 3 25r boiler on a S plan system, Im confused what wires go where. The programmer is a Honey well ST699. It asks in the boiler manual for a common electric supply for the boiler and for the corresponding controller. There are two mains wiring connection points in the...

Hi is it necessary to have a cpc on a lighting circuit when all fittings and switches are non conductive and the final circuits are RCBO protected. Its an older installation fitted when regs were different. Just wondered if they had changed. An 18th edition reference would be handy . Thanks for...

Hi, I wonder if you could give me a straight answer to this question. I have searched hi and low but seem to only find opinions. I have been offered a heat only boiler that is 8 months old. The reason for sale is that the owners have decided to change the system to a combi for some reason. Is it...

Hi, the ball cock on my cold water header tank on my s plan heating system is continually adding water to the tank yet there are no taps on and no signs of a leak. The hot water is fully pumped by the way. I don’t know if this is related but the header tank for the heating system has warm water...