DIY Doctor UK DIY Forums

ericmark

Counting the neutrals and a black, it would seem 4 cables. 3 x twin and earth, and 1 triple and earth, the latter seems likely to feed the fan. I would have expected to find all the fan connections in one side of the isolator and rest in the other side. But can work either way, but would not expect ...

ericmark

We tend to label many things as radiators, the water filled radiator used with most central heating systems has three devices connected to it, the bleed valve, the lock shield valve (tap) and the TRV (thermostatic radiator valve) and there is very little one needs to do. But we also have oil filled ...

ericmark

Been now asked on three forums, this is forth, looking at the white functional earth fly lead, which it seems is used with VD type so they will still trip if the neutral is lost, fair enough in an extension lead, but in the consumer unit, if one loses the neutral with a TN-C-S supply likely you have...

ericmark

I have two smart switches which do not need a neutral, the Energenie (MiHome) you can get a master and slave, so can have two-way switching, However of the five fitted, only two still working. And minium watts is 5 watt. The TP-Link (Tapo) uses a battery, and you can get a remote wireless button. An...

ericmark

I do not remember any problem setting the programmer, I know modern units you can set the time you want the room to be warm by, but the ST9400C is a rather old unit, which one would not fit today. Today rather than on/off we set different temperatures for different times of the day, this was basic b...

ericmark

All changed in 2008 with the 17th edition BS 7671:2008, The requirement for earth bonding was relaxed as long as you have RCD protection. The incoming services depend on material, clearly no need to bond a plastic water pipe, or gas. However, where and how to bond metallic pipes has to consider unde...

ericmark

If the tub is double insulated then yes, no earth required, but it means you can't use anything near the tub which is not also double insulated.

ericmark

The main problem is the equal potential zone. In the house earth bonding means everything is one zone, Outside the earth on the house supply may not be the same voltage as true earth, So there are methods used to ensure all exposed metal work is the same voltage. The best method is to rely on earth ...

ericmark

If anything we need vents now more than ever, we fit double glazing which removes the dehumidifying effect of the windows, however we clearly do not want drafts, and so it depends on the location, this house we are sheltered from high winds, but start point is look at humidity in the home, today in ...

ericmark

There are bulb holders designed to convert a bottle into a lamp, and if one had the right die one may be able to cut a new thread, but cost of dies and stock to hold it, is likely more than a new lamp.

ericmark

My new immersion heater control shows power used today, yesterday or last 7 days, and it shows just under 4 kWh, in the past always used the oil boiler, as told oil cheaper than electric, it did not keep the water as warm as the immersion heater, but did heat more of the cylinder, so the 20 kW boile...

ericmark

I would agree with the advice given, but would also add in my own house rare for all radiators to be working together, all my radiators have a TRV fitted, and most with electronic heads, the system I will admit does not work A1 with my oil fired boiler, as it does not modulate like gas boilers do. H...

ericmark

The element in most domestic appliances is switched on with the line only, so even when not on, it can still cause a neutral to earth fault. With a mineral insulated heating element, the heat can move the moisture, so it can appear as if some random fault. I have in the past, when I had no test gear...

ericmark

An RCD monitors the in and out current and assumes if they don't match, the current is going to earth, There is always some loss, as we use AC, so there is some inductive and capacitive linking so typically we use a 30 mA RCD. We should when installing monitor the background leakage which should not...

ericmark

Living with no mains gas, I have looked into a heat pump, the first question has to be, if the power fails, how do you heat the house? As it stands, if I loose grid power, I have two ways to heat the house, one is an open fire, that is non preferred as it means burning all my BBQ supplies, and empty...

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Useful Tips

Search found 2872 matches

Re: Bathroom fan not working, isolator also disconnecting light

Re: New property acquired

RCD Voltage Dependent (VD) and Voltage Independent (VI) and use of functional earth.

Re: Replacing a wall-switch with a smart switch

Re: Honeywell ST9400C 7 Day Programmer

Re: 1st fix earth bonding query

Re: Waterproof switch beside hot tub

Re: Waterproof switch beside hot tub

Re: Old house air vents

Re: Advice on Repairing a Broken Lamp

Summer use of immersion heater, or boiler, results don't match expected.

Re: Central heating upgrade

Re: Washing machine blows fuse in operation or after cycle ends

Re: Washing machine blows fuse in operation or after cycle ends

Re: Anyone made the switch from gas to heat pumps?

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Search found 2872 matches