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Hi guys, Im a DIYer and ive done all of the electrics in my house, expending the ring main and fitting all new lights, etc.... Ive got a degree in Electrical Engineering and Electronics so im more than capable abilty wise to understand the concepts and put them into practice. However id...

ah right - well its more than likely the multimeter isnt accurate enough - its only a £10 jobbie from uni! Thanks for the info guys!

wow good answer! although im a little sceptical about taking wires from the connections in the consumer unit - i presume thats what you mean be cross connect? Also when you say interconnect do you mean an erronous connection between the live and neutral connecting them both together for...

Another DIYer trying to a professionals job!..... I switched the main breaker, have removed a socket, and have tested the resistance on the circuit. It came out at 1.2ohms on each wire. I know this figure shows there IS continuity, but will it also be able to tell me (or someone out...

you should have a drainage valve somewhere underneath the boiler. let a bit of water out of that. i you cant find that then alot of the return valves on radiators have drainagetaps on them. Letting water out of these does the same thing. do this when the boiler is off and has the system has had...

what happens if it gets below 0.5?! i might of already!!

ok then, but should it vary by 0.7 - 0.8 bar between the two?

I have a worcester combi boiler, which has a very fluctuating pressure. When its not on the pressure is about 0.8bar and when its on its about 1.5bar. 1) is this usual? 2) what range of pressure should i expect? 3) should the basic pressure be set when its on or off? 4) if it shouldnt be...

i certainly do!! our small office has 2 new imac core2duo desktops, one 20", one 24". And a groovy macbook pro. and a video ipod. and 2 ipod nanos. and a basestation speaker set. Apple mad here!!! hehe

oh i forgot to mention, it is definitly not the outlet because a) it was a brand new soil pipe and b) ive since tried it with it not connected to the soil pipe at all - filling it with a hose and it just spewing the water all over the patio, and it still does it!

Any ideas anyone out there?! Im almost certain the installation is correct, but when i flush the toilet instead of the two main jets of water hitting each other at the front of the toilet and cascading down the pan (thus pushing everything in there down the hole!!), the left hand side jet...

i havent measured the resistance, im just using a 80ohms because someone mentioned it earlier in the post.... :?

yeah yeah i know thats the voltage, and its the same voltage on the lighting radial. Im just trying to understand WHY there is a voltage difference in my readings. Im not even trying to fix a problem, it is just curiousity i suppose!!

is my reading of the situation correct tho? In theory: The bulb is connected to the neutral, the switch cables are connected to the bulb and to the live, so as there is no current flowing, this should give the same voltage reading as directly to the live and neutral at the rose?

no not a dimmer switch - just a regular one gang, one way switch.

enough voltage to create an approx 35v drop? thats quite a big drawing of current (80ohm, 35v, thats close to half an amp!!)

really? i did have an incling it was that but, if the switch is breaking the circuit and no current is flowing, how can there be a voltage drop? you only get a voltage drop if there is a current flowing dont you?? ps cheers for the speedy reply!

Ive got a small quandry - anybody out here able to help?.... Measuring voltage at the rose of my lighting circuit, the main radial circuit is fine, a steady 243v. however, when the light is off and i measure across the switch, its about 208v. I dont understand! all im measuring is the same...