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There's also going to be issues with penetrating sound and fire barriers in flats.

To get a reading which tells you what is going on, you need to connect one probe to a reliable earth, and the other probe to whatever you are testing. The reliable earth could be a earth on a nearby socket, assuming this is not suffering the same problem as your lights appear to be, it could...

I've seen situations where bushes have been loose and the containment not effectively earthed as a result, but this has always been on surface mount installations. Also I have no idea if it was a result of bad initial installation or wear and tear. I've also seen situations where back boxes...

I'm not sure of the logic behind it, but I guess the thinking was that anything requiring more than 16A would be fitted with a ≥32A plug, so the circuit arrangement would allow several pieces of lower power equipment to be connected to a single circuit. As 16A is the lowest CCC of these...

Are you sure that something like a plastic bag hasn't blown onto the light in the recent wind? Halogen floods get mega hot when they're on and would easily burn something like that.

From my experience 8.5W is a good replacement for a traditional 60W lamp. A warm white filament type as linked to above gives an indistinguishable output to what you're used to.

I've worked on construction sites for many many years. I've seen a fault on a 110V supply fed from a 10kVA transformer burn it's self clear without the OCPD at the tx ever operating. I've also accidentally severed a 110V temporary supply cable and lived to tell the tale. I'd much rather...

I reckon this pretty much voids that regulation.

Why would you buy the parts before finding out how to do the job and what parts you actually need?

Why not get another quote or two from recommended local electricians. Make sure they quote to the same specification as the first price you have then you'll get an idea if the price is reasonable. Don't use the likes of mybuilder.com. These sites are populated by people who can't find work by...

Sounds alright to me. It will be a lot more work than you think to do the job properly.

I replace 50w gu10 halogen lamps with 7W megaman led lamps. You can't tell the difference apart from on your reduced electric bill.

It is better to stay quiet and let people think you're an idiot rather than open your mouth and remove all doubt.

It could be a duff connection. Check the new MCB you fitted has actually clamped onto the busbar. It's easy to install an MCB with both parts of the clamp in front of the busbar. The screw will tighten up and feel like you've made a good connection when really you've missed the busbar altogether...

http://www.ebay.com/itm/161086481340?

B n q will have normal vents in stock tomorrow if you're desperate. Not sure if they're open on ny day though.

Do you plumbers just guess then? Or is there a way to calculate it?

Can you find out which circuit breaker in your consumer unit isolates power to the FCU for your boiler and then tell us what's written on it. This will give us an idea if the circuit has sufficient capacity to support the additional load you are proposing.

I'm after an idiots guide to heating pump sizing. What do the numbers mean? How do I know what size pump I need for my system? Thanks

I've never seen an ELV fan fed from an SMPS. It's always a true transformer. Maybe to do with the electrical seperation required for a proper SELV supply? I would have expected the PF to be closer to zero, but it's an inductive load without any PF correction, so may well be the case.