Measuring electricity usage

[watervole]

Is there any kind of gadget that you can plug into a socket behind a plug to find out how much power a fridge/cooker/TV/etc is using?

I'd like to find how expensive different items in our house are to operate and it isn't really practical to turn off everything except the item I want to measure, and watch the main meter.

I've heard that old fridges use a lot more power than new ones and that it could be cost effective to buy a new one, but I see no point in junking a perfectly good fridge unless it is costing a lot to run.

Comments

[alex-holden.livejournal.com]

Yes. This one (http://www.maplin.co.uk/module.aspx?ModuleNo=38343&doy=26m8) is currently a tenner from Maplin. The main problem with old fridges is when the magnetic door seals start to leak.

[watervole.livejournal.com]

Brilliant! I've just ordered one. Thanks. (It is possible to replace the seals?)

[alex-holden.livejournal.com]

I think it is, though I've never tried it. You could try searching for your fridge on this site (http://www.espares.co.uk/part/Refrigeration/Manufacturers) to see if they sell them as a spare part. Failing that it might be possible to buy a set for one with a bigger door than yours and cut them to the right size. My work fridge could really do with new seals- the ice box frosts up in no time, and when there's a heatwave the compressor runs and runs until it overheats and cuts out, then everything in the icebox defrosts.

Ah, ok

[the-magician.livejournal.com]

I was just about to offer to lend you mine, but it would have cost more in time/petrol to get it to you than just buying your own one!

Yes

[the-magician.livejournal.com]

it's possible to replace the seals.

If you google for "fridge door seals" you'll get plenty of matches (many American of course)

There's a tip here (http://www.seniority.co.uk/contributions/homeandhobbies/diy/index.php?ArticleID=diy_1012844307) which suggests putting the replacement door seal in the dryer for a minute or so as that will soften the rubber, take out any kinks, and allow it to be fixed properly and easily.

[reapermum.livejournal.com]

Thanks for that information, we've been looking for one for the department for a couple of years now but they disappeared from all the education catalogues. We only have a 12V joulemeter and mains is what is on the scheme of work.