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We currently have a power shower in the main bathroom and an electric shower in the en-suite. We also have solar panels with a plentiful supply of hot water. Would there be any issues with connecting the electric shower to a hot supply with a Thermostatic mixing valve installed on supply ? The...

Thats correct. There is no cavity.

Just wondering what the correct method for putting DPM at window lintels is when using 9i cavity blocks (single skin). Is it put over the window and brought inside and doubled back under the 1st block over the lintel ?

100K 2W Resistor across the input solved the problem. Thanks for your help.

Will try the resistor option first. Any particular type of resistor ? Will the resistors in attached link suffice. http://www.maplin.co.uk/Module.aspx?ModuleNo=42453&criteria=resistor&doy=8m8

Thanks for the quick reply aptsys. Okay so Capacitive coupling seems to be the problem. I am using a 4 core 1.5mm NYMJ cable of about 8 metres. 2 cores to power the valve on and two for the switch. Would it help if I replaced the switch wire with T+E ? I am feeding the switched live to a PLC...

Plumber has just completed upgrading heating system which includes 3 zone valves. When completing wiring for zone valves I encountered some strange readings. The switch on the zone valve is supplied with a pernament live(230v AC). When the valve is open the switch closes and switched live goes...

By firing the boiler when there is a demand for heat, does that not mean that cold water will be circulated through the rads (cooling them) until the boiler has brought the circulating water up to temp !

Just wondering what your opinions were on the different zoning options etc. for central heating. Which of the following is more efficient? A) Fire the boiler when a stat calls for heat via the contacts on a zone valve. B) Keep the boiler cycling at its own thermostat setting and just open a...

The wall is 8ft high and 5' thick.There is a horizontal stud about 3ft down from the top. A bit too high to mount box.... Notching stud is a possibility, but I don't want to damage the paintwork as it is not a new wall.

I am in the process of installing a new phone outlet in an upstairs bedroom. The tidiest route for the new cable is to run it down through the stud partition. Mq question is, Is there such a thing as a 3-4ft drill bit to drill through the stud which is located half way down the wall ?

You could use 2 showers if you connect them up via a contactor which will permit only one shower to be used at once.

I recently installed a 2nd electric shower in my in laws house. There are now two 8.5kw showers installed. The supply fuse is rated at 60amps. Both showers running together would draw ~70amps. To over come this, I installed a 40A 30ma RCD with a 40amp MCB. The output from the MCB I have...

I was putting some extra sockets in a kitchen extension the other day (radial circuit). With all new sockets connected, I did a continuity check (power turned off) to all sockets. I was a bit confused when I found that there was continuity between live conductor and both the ground and neutral...