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  1. T

    Best practice for this light?

    Your good advice is appreciated, securespark! I'll check tomorrow to see if there's an F. Don't think so, though: it's just a standard off-the-shelf Zone 2 light fitting. (It could be said that the regs are there so you can avoid too much scientific speculation and just do it the way they...
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    Best practice for this light?

    Sorry for the contradiction, securespark: access from above is a major headache. Possible but much hassle. The ceiling is plaster, the luminaire is a metal-cased IP44 with 60W bulb. The JB is thermosetting urea (I spoke to the manufacturer). It will take a lot of heat. In fact the PVC sheathing...
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    Bathroom lighting regulations

    Is the original author of this post still in the building?? :? My feeling is that information given to others relating to 'special locations' should be on the money. It's a complicated enough issue as it is without the added confusion of inaccurate information (imho :) )
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    Too much IRQ sharing?

    Thanks eggplant. I realise it seems illogical that I haven't installed the new cpu, but there is method in my madness! I guess since I sorted the BIOS by restoring the default values I don't really 'feel' it's the cpu that's a problem. Premier has been working fine most of today. Last night (and...
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    Too much IRQ sharing?

    Yes it's the same machine - still working on it! I got a replacement CPU but haven't fitted it as the existing one has been OK since the BIOS reset. I thought the problem might be the IRQs as I remember a few years ago having to set them manually, but this must've been Win98 that I was using...
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    Best practice for this light?

    That's news to me securespark...am not aware of the F mark. F word, yes, but... I'm going to make a temperature check above the light. I may reposition the light, too, so the hotspot is not below the jb. The ceiling is plastered with just the hole for my jb, which is not actually touching the...
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    Bathroom lighting regulations

    I'll be your second, securespark.... 8)
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    Best practice for this light?

    Thanks, guys. Yes, it is difficult to tell what the temperate is above the light. Perhaps max-temp recording stick-on indicator label? However, I feel that, as this luminaire is designed to fit directly to a ceiling, which could be made of combustible material (wood, hardboard, polystyrene(!))...
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    Bathroom lighting regulations

    I'm ecstatic, thanks :wink:
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    Too much IRQ sharing?

    The s/w was state-of-the-art 5 years ago, possibly now state-of-the-arc... It's a Matrox RT2500 video capture / processing card (i.e. pre RTX100 or whatever) with Adobe Premier 6 (Ver 6.02, which is, I believe, the last free upgrade before having to purchase ver 7 upgrade). Actually, the...
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    Too much IRQ sharing?

    I have just been rebuilding my trusty old Asus A7V133/Athlon 1.2 PC which was originally designed to run Matrox RT2500 / Adobe Premier video system. OS is Windows 2000 SP4. This time round I am using onboard sound (AC97 - as opposed to separate sound card) and a WinTV card. I am still using...
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    Best practice for this light?

    I've just installed a nice wee jb in the ceiling, with all the wires now neatly connected therein and mounted the light directly below it. The light is fairly flush with the ceiling (1/8-inch gap?) but has a heat deflector/reflector fitted behind the bulb. Do you really think there might be a...
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    Bathroom lighting regulations

    You got your zones a bit wrong, Desie....perhaps you'd care to recheck the regs and make a correction? :lol:
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    Best practice for this light?

    That's a possibility, captain....thanks, will investigate this afternoon.
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    Best practice for this light?

    Thanks guys. The luminaire has been chosen and offers zero space between itself and the ceiling. Plenty of space inside, though, but it's not where you'd want to make connections to a bunch of cables, right next to the bulb! Choc boxes are pretty small, as I recall, and there's not really...
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    Wylex CU - 9kw load

    Hmmm...your design current is about 39A @ 230V for 9kW, so your nominal current is 40A. 6mm² is only good for up to 38A, unless clipped direct. However, you're allowed to factor in diversity for cookers, so that brings your design current down to about 19A, in which case 6mm² is more than...
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    Best practice for this light?

    I have just been asked to upgrade a Zone 2 bathroom light. I took the old one down to discover 5 grubby cables (loop in & out, switch, fan, mirror light, latter two from switched feed) all connected with plastic connector blocks and covered in tape. This arrangement was stuffed into a very small...
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    Design of Ring Final Circuit

    Hmmm...imo the R1+R2 values will be more-or-less the same wherever you measure in the ring. If a socket is near the CU, then it has one leg that is short and one leg that is long...in otherwords, they all equal (r1+r2)/4 wherever they are located. True? It's the spurs that will have the higher...
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    Design of Ring Final Circuit

    ??? :roll:
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    Design of Ring Final Circuit

    For a 2.5mm² ring circuit, the Ib (design current) = In (nominal current) = 32Amps. No diversity is allowed for each individual circuit (so you have to assume 32A load for each final ring circuit). If , however, you have more than one ring, you can apply diversity of 40% for all but the largest...
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