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    Aurora AU-GUF4011/40 alternative

    If you are looking for claimed lifespan then these new fangled LEDs probably aren't going to impress you either. The quoted life is almost certainly of the LED chip and obtained from accelerated aging tests, but you've got to also consider all the electronics sitting behind it. Cheap...
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    Can cable share the same notch as copper central heating pipes?

    If you're going to buy a book then get the On Site Guide. http://electrical.theiet.org/books/amendment-no3/on-site-17th-ed-amd3.cfm It's got all you need to know, the BS7671 itself has a load of stuff you don't need to know and it's not a good read. All you need to know about putting cables...
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    Insulation

    Loads of seconds on ebay right now, sounds like they have just been left outside a bit.
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    US building, heat loss through roof

    When I lived in Colorado they were insulating new builds to a higher standard than in the UK. The place is jerry built though, but they have loads of room to move somewhere else when their house starts to fall apart.
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    Gas meter not bonded, what diameter (4mm/6mm/10mm) GY earth wire should be used?

    The "bonding" regulation (544.1.2) isn't totally clear but if you think what it's trying to achieve then it makes more sense. What is it trying to achieve? It wants all metalwork inside the house to be at the same potential so if you put your left hand on the tumble dryer and your right hand on...
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    Tumble Dryer in the Garage

    Ignore the nonsense about turning your garage into a bomb, it's nonsense. 1) Back of the fag packet calculations we did when deciding what sort of tumble drier to buy suggested for 2015 electricity prices it will take 600 cycles for a heat-pump drier to start making economic sense. If/as...
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    Changing the roof on the conservatory

    That structure looks strong enough to replace the poly with glass or put a proper aluminium/glass roof on it. Do that and you wouldn't need to get the council involved with building regs. If you put a 'solid' roof on, no matter what it's made of, you need to get building control in who will...
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