Oh, Elektra you fair damsel in distress, whereto my ohms and amps I go?
Is my plight with your volts forever to stay my watt and foe?
After the herculean task of moving from farm to town-house twice within 6 months, we have now finally unpacked and are settled in a new town-house not far from shops, railway-station and cinema.
All the ceilings have down-lights. They are all the rage now and are 12 volt halogen powered. The reduction from 240 volts to 12 volts gets done by an equal portion of increase in heat. There is nothing like Einstein’s theory of relativity being proven. While we live now in a new dwelling-town-house and the roof is insulated by a thermal blanket, we thought of insulating the ceilings as well. There is nothing like feeling snug and warm in winter and cool during heat. We feel, like so many, that our ecological footprint ought to be kept as modest as possible without compromising in comfort.
When the insulating expert quoted us, he explained that every one of those down-lights would have to be covered up, as well as each accompanying transformer, and kept away from those fire resistant polyester insulating batts, the argument knocked me for six. Those down-lights can achieve a temperature of over 370 Celsius, he enthused. Yes, he continued “they are a bit like having toasters in your ceilings”.
Even though the down-lights are twelve volts they still burn 50 watts each and another 10 watts for each transformer. This is a very expensive way to light up your house.
“Heaps of houses have burned down, especially after the covering up by heat resistant thermal batts.” The insulating man was rocking on his heels now, not unlike the Shires weed inspector triumphantly spotting a nasty Paterson’s curse back on the farm. I got really warmed up to the subject now.
Needless to say, we decided to install the insulation but only after covering those hotwired halogen down lights with special covers to which the insulating batts can be snugged-up to. The next step will be to replace all the halogen down- lights with fluorescent down- lights, doing away with the danger all together and catching two flies in one swat, ‘lowering heat and danger and being friendlier to the environment with less coal fired use of electricity. Save on electricity bills.
We have an amazing 32 of these halogen 370celcius heat giving down-lights in our modestly sized town house, including 12 of these in our lounge cum dining-kitchen area alone. We have 2 of those in the fume extractor above the gas stove, fatally focussed on the fried bacon and eggs. Can you believe it? The extractor catches the fat, ideal to burn the house down while cooking chips!
Have a break with this, Una Furtiva Lagrima; http://www.youtube.com/watch?v=Funp7JTWp2A
Needless to say, after our discovery of all those potential fire bugs cum-toasters hidden in our ceilings we hardly turn them on now and will get them replaced pronto, at least as soon as the electrician will spare the time. In the meantime we have plugged in reading lights and creep around with torches. You would have to be mad using those fire bugs of lights. Just imagine after a night of celebrating with a particular nice bottle of Shiraz, falling asleep with the down-lights sizzling away above the marital bed’s ceiling?
Is this another one of those ‘asbestos’ like dramas ready to blow up in the future? Tens of thousands of homes have those dangerous lights and tens of thousands more will no doubt be built in the future. How on earth was this form of lighting ever allowed to happen? How did this pass the building regulations? The resulting fires after the government subsidized insulation schemes are partly or perhaps mainly to blame on those 370 C heat giving concealed fire hazards inside ceiling cavities. This might well have been avoided if those lights would never have been approved in the first place.
But, there is more.
Another amazing bit of Aussi architecture is those much-loved black roofs. . Has anyone ever measured the difference in temperature between black and light coloured surfaces exposed to sun and light? Black roof surfaces together with those 370celsius down-lights would have to create the most perfect combustible area between ceiling and roof imaginable. We are supposed to clear debris around the house, rake leaves, clean gutters during the bush fire period but it might be even more prudent to look at those dodgy lights. Of course, anyone ever having ventured through a manhole into the roof would have noticed a possible built up of debris, dry leaves, old storage of papers, rats nests etc. I shudder to think of the nightmare what the halogen light in contact with that debris could result in
It is easy to blame the insulating contractors, but there is something fishy here. We love to rely on an economy that includes our love of home ownership and home building. Nothing must stand in its way. I suspect that the need to keep propping up housing industry might include a rather lax ‘laissez faire’ attitude to a whole host of regulations. One of them might be allowing housing to be built badly insulated in the first place, with black roofs and those potential halogen furnaces. No matter how you look at it. To have anything fastened onto a ceiling capable of such enormous heat is stupid and very dangerous.
It’s not hard to find the evidence of the danger of halogen down-lights:
http://www.theage.com.au/articles/2007/07/21/1184560109174.html
In Victoria there were 57 house fires caused by halogen down lights in 18 months. The fire begins in the roof as the insulation is ignited by the 300 plus degrees Celsius temperatures produced by the light fitting. As the fire is in the roof it often goes undetected by smoke alarms, and residents can be unaware of the fire until it crashes through the roof.
Unless tougher regulations on the use and installation of halogen down lights are introduced, it is only a matter of time before someone is killed; the Metropolitan Fire brigade has told The Sunday Age. Two young children almost died in separate blazes when roofs crashed onto their beds while they were sleeping, brigade investigation and analysis unit officer Rod East said.
There is a Volt Lane and an Amp Lane in Albury CBD. Thought you should know that.
Halogen lights – 30 of them etc. Mind boggles. I’m still in the age of one light per room or living area. I must be so old I’m actually modern. The light in the garage (fluoro tube thingy) last 22 years before it carked it.
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Spot on Vivienne,
Our first house used to have one light per room. Now the lounge room has 12. Our bathroom upstairs has 3 blinding lights. I climb out of the bath, look into the mirror and see a biblical Job coming towards me. I just about call 000.
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Picofarad street?
Watt Avenue?
Henry Boulevard?
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Big, I just do not have the capacitor to respond.
Resistance is futile.
Marconi my words
Does any of this ring an Alexander Graham ?
Plot it on a van der Graff
And see if it generates any current comments.
If it does, I diode a thousand deaths and pose a rheostatic question.
I gauss.
Sorry, I was just arcing up.
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Emm, your comments have nearly galvanised me into action…potential.
Wait on, I’ll integrate my circuit.
I’m experiencing some sort of impedence.
Oh, I’ve spontaneously discharged!
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Right. Now go and clean it up. I’m sensing a thin tissue of lies.
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…or a thin veneer of silicon.
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They intersect each other and are nearby the electrical substation slap bang in the centre of the CBD. The other funny thing is that I thought Amp Lane was named after AMP the insurance mob as their named building is in the lane.
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So, they form a circuit?
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Nup. Intersect each other, a cross, very narrow though – one way. The posts above are rather clever though.
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Many thanks, guys. Lots of food for the roof and the ceiling there. We shall peruse them all singularly and collectively.
Now go read the Second Letter, will you? Otherwise you won’t know what happens next!
🙂
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Exams in May and if you fail, there’ll be no Honourable Doctorate for you! Not even an Honorary Doctorate. So begin your studies now!
🙂
Oh, and I don’t know if T2 will hold his, as well, or when.
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Are you going to make a test, atomou? I think that would be good.
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But of course, Lehan!
Be there in May, on the dot, sharp!
Three hours, closed book and no calculators! Marks will be deducted for faulty grammar, syntax, orthography, speellink and flaws of physical appearance! (Of the student, I mean, so don’t get there either stoned or drunk!)
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PhD…Piled high and Deep!
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Yes,
Those led’s are expensive. Our roof is a light grey and we don’t use those halaogen much.
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Well, just so you keep the claret inside your wrists, Gez, we have about 20 of those halogen downlights. And when ours get too hot, they turn themselves off – which on occasion they do. Ours are rated at 20 watts and the transformers are electronic rather than the old multiple steel plate ones and while they do get warm, they never get so hot you couldn’t hold them in your hand.
But I’d rather be cautious – and when we had three or four lamps blow (yeah, 2,000 hours ….. bullshit), I got the electrician to fix them – precisely because of the in-ceiling insulation issue.
Thanks for the words about LED’s – I think we’ll have a shot at these as replacements. I find their effectiveness and efficiency as batter-powered bike lights truly amazing.
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We are still waiting to get the sparky change over to LED’s. They are still expensive and am not sure how they can plug those lights into the wiring bypassing the transformers. Most of those lights can only be accessed from below because of the floor above.
I am amazed about your 20watts halogen. I must have a look out for them next time a 50watts blows.
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I’m quite the moron when it comes to eco-friendly power. We were thinking about solar but when we checked it out a few years back (probably 10 or so) it seemed like a big job with little gain before many years elapsed. Anyhow, could you guys put up some pictures of say the best lighting for the house? At the moment we do have down lights (around thirty of them) and we’d love to change them to the most efficient and less eco-harmful but when I went to the electrical shop I couldn’t decipher what they were advising me, so I did nothing. But I’d love to make the changes, if they’re not fearsomely expensive.
Also Emms, could you find a photo f that hot water unit you saw at your mate’s place? Don’t quite understand what’s the story there (“reverse fridge” reverses the direction of my brain currents). It sounds very interesting. Wouldn’t mind checking them out.
We ought not to be using enormous amounts of power since there’s only the two of us, but we quite often have to do lots of cooking and even, at times, hosting either one or both of our yumptious kids and, sometimes their foreign friends, so it can get a bit substantially Hephestian.(aka Vulcanic).
Thanks for the informative articles Gez. It made us think again about our use of electricity.
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‘Mou, I think my mate’s heater was a Rheem – but Dux, have a nice web site with a little graphic movie about how they work ….. AND rather attractive information about government rebates – which in our neck of the woods can come from state and federal governments. In NSW the rebate scheme for these buggers runs out in July this year. And with Gillard canning green car initiatives for example, I suspect that free federal money ain’t going to last forever either. There ARE conditions for rebates and I think we have difficulty because we have gas hot water and the government is trying to reduce electric hot water.
However, now Australia is exporting huge amounts of natural gas to China, I can’t see local gas prices doing anything less than world price parity – so there’s incentives and there’s other incentives 🙂
http://www.dux.com.au/products/1&9gtype=search&9gkw=heat%20pump%20hot%20water&9gad=8087006015.1?gclid=CJ2RiPfY8aYCFQPhbgodv3rxFw
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These units work just like a reverse cycle air con. The alternative is solar with gas booster. There are some great Australian made units which use evacuated tubes, which should last a lifetime. such as Beasley-Rinnai.
We even considered a ground source heat pump for whole house cooling/heating plus hot water. The problem is the initial cost of drilling/installing the heat exchange pipes, and, the possibility of the pipes being damaged in a geologically fragile zone such as Newcastle.
There are some solar powered systems in the pipline; T3e, a company formd by the ANU’s resarch department does heating, but not cooling, yet, ecocool should have a solar cell powered chiller out by the middle of the year, plus some American companies do solar cell powered split systems.
I just keep dreaming!
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Yes,
I have the same trouble when getting advice about electricity from the retailers. It’s all Ohms to me. I nod in agreement but am secretly totally confused, too timid to show my ignorance.
I think the LED’s are not cheap but they are getting cheaper, so…..
As for our hot water. I believe the instantaneous gas hot water is the most efficient and cheapest. You only use gas when turning the tap on. It does not store hot water. Another feature is that the temperature can be set at a much lower temperature than usual. We have ours at 45c.
We cook on gas but the oven is electric. We don’t oven cook a lot.
Our first gas bill we received last week for the three months was $ 89.- including a $45- access charge. So usage was a very pleasing $ 45.-. That included some heating as well. We could hardly believe it, and Helvi rubbed her hands in glee ! 🙂
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Good photo of H.
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It’s the ill-famed Svetlana, I believe she’s causing havoc in Newcastle at the moment…
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Yeah, she’s hot!
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Yes,
earthquakes in many households. Still, she kept many a husband off the streets.
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Yes, but that photo is already a couple of years old. She is ageing so beautiful and her agility is truly amazing. We often sit cross-legged together and go quite tantric saying Ohmmmm or is it ummmm?.
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Those bloody wasteful halogens. There are some great LEDs that produce the same light with bugger all heat, and consume less than 10 watts. I’ll be converting our downlights, to LEDs when we get some dough. Then we’ll paint the black roof white!!
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We are waiting ( with baited breath) for our first electricity bill. It should be a lot less than on the farm. The farm was terrible, you could harly breathe and use power. Flushing the toiltet, power. Turning the tap, power. Fill the dams,. horribly expensive. The main house had a huge electric hot water storage. The worst and most expensive of all hot water systems. Towards the end I only had it switched on 2 nights a week and saved about $150.- per quarter on electricity. Why keep hot water boiling hot 24/7?
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