Search results

just a quick question-a 3kw immersion heater at 240 volts will use 12.5 amps - so will a 13amp fuse be sufficient in the spur socket? i read that a 15amp fuse or 16 amp mcb should be used so i'm not so sure now!!???

near my consumer unit and the board which the supply head/meter is attached to (what's the name for this called again as I cannot remember)!! there is a RCD on the wall, which has 3 leads going into it (L N and Earth I suppose from the colours, red black and green/yellow)! a lead (with all 3...

top hat washers usually come with taps when you buy them as a kit. 1/2" or 3/4" standard sizes. Otherwise you can buy them from any plumbing shop/DIY store in a pack.

Hi I have some baaic electrical questions that I need some help on please if possible?! What is the difference between a MCB and a RCD? I know a MCB is like a fuse and trips a circuit if the current gets overloaded, but what exactly s and does a RCD do?!!! Sorry if I sound ignorant...

:cry: of course!! sorry for the stupid question!!! was just curious!!

i thought so. i don't knw about boilers but i know that a bypass circuit and automatic bypass valve can be fitted to allow the water to circulate if all trv's are shut down or for if you have a pump overrun. i know a lot of boilers nowadays have an integral bypass built in though.

that's a good point-the pump has a 3-core wire too, so are these all standard colour coded wires that come with a new pump?!

if all TRV's are turned off on all rads in a house, will this automatically turn off the central heating? or will the central heating only turn off when the programmer /room stat tells it to do so?

are there are links anyone could offer me to webpages that show details about how boilers work/the integral parts/why things go wrong, etc? I really want to learn about boilers, especially gas boilers, but don't really know where to start! i'm not going to start playing with my boiler, lol! i...

ok so for example as long as the wires all link up together in the terminal box in the correct way it doesn't matter what colour you use? except obviously for earth!! thanks a lot for your help.

ok thanks for your help! i know on a cylinder stat there are 3 wires used. and they connect up on the stat to C, 1 & 2. if using a brand new wire to connect up the stat and not the original wire is there any colour code that should be used, ie brown for C terminal??!

please forgive me if i sound dumb with this question!!: but is twin and earth wire, just a name for live, neutral and earth all in 1 3-core wire??!!

just a brief question about central heating wires: i know a motorized valve uses a 5-core wire. and an immersion heater uses a 2.5mm2 heat resistant flex. but what wires and used for cylinder stats, room stats, pumps, etc? just normal 3 core? any specific size or features?

Just a quick question in general about cylinder stats. With the S PLAN wiring the Cylinder stat only has 2 terminals but on the Y PLAN it has 3 terminals. I know these basically open and close a switch which then either opens or closes the motorized valve. What I am saying is, do you need a...

a while ago i know the bathroom rad in some cases were installed on the primary flow and return to the hot water cylinder, so in summer when no heating was required in the whole house, but hot water obviously was, then there was still hot water in the bathroom.

ok, thanks all for your help on this! even though i annoyed you with my stupidness!!! i suppose if a part goes wrong, you just have to try and replace with a like for like part and if not follow the manufacturers instructions for new wiring!! ...

i'm not a messer, just curious! but i doubt you'd be able to change it as you wouldn't know where the wires went anyhow either!! you'd prob blow it up !! i was just curious for some help as to why my system was different to the set Y plan and if there was another plan available which would be...

you can see why people get the hump with plumbers and judge them as cowboys!!! when simple wiring plans go wrong and indifferent to what they are supposed to be!!!! i am not stupid, but when an i nstaller wires up my system cryptically it makes me annoyed! if i ever needed a replacement...

My boiler is Potterton Flamingo II The wiring plan is exactly as a standard Y Plan diagram as shown on this site, apart from 3 wires missing. as mentioned in my opening post. basically my point is if i need to replace my programmer in the future (as i replaced my cyl stat recently) will...

am not sure about boiler overun, will check. i have a terminal box in the airing cupboard with all the wires going into it, but as before am 3 short!! i notice that the spur that feeds the terminal box has another lead going into it directly from the porgrammer (as mentioned) and another lead...