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Wire Gauge

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AdamBoyle
Nova Slayer



Joined: 29 Aug 2004
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PostPosted: 14:50 - 08 Jan 2005    Post subject: Wire Gauge Reply with quote
Yesterday my Cheetah alarm came from eBay, its looks pretty good but the wires are so short theres no way they'll reach anything on my NSR. Its says that if i have to extend any of the wires to use the correct gauge. The wires have 0.5mm squared written on them, but i cant find any of this wire in my local shops, does anybody have any ideas/websites/shops that might be able to supply some?

Embarassed
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Guest
Brolly Dolly



Joined: 22 Apr 2004
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PostPosted: 15:13 - 08 Jan 2005    Post subject: Reply with quote
You know that white, twin-cored flex that pendant light fittings hang from? That's 0.5mm. If you're not fussed about colours buy a meter of that from Wilkos and strip the cores out. Less than a quid I'll bet.
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AdamBoyle
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PostPosted: 15:16 - 08 Jan 2005    Post subject: Reply with quote
Cheers didnt think of doing that.. Come to think of its Dads probably got some of it out in the garage that i can, erm, well, steal... Smile
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Kickstart
The Oracle



Joined: 04 Feb 2002
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PostPosted: 18:00 - 08 Jan 2005    Post subject: Reply with quote
Hi

From what you say the wire has an area of 0.5mm squared, not a diameter 0f 0.5mm.

All the best

Keith
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Guest
Brolly Dolly



Joined: 22 Apr 2004
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PostPosted: 18:04 - 08 Jan 2005    Post subject: Re: Wire Gauge Reply with quote
AdamBoyle wrote:
The wires have 0.5mm squared written on them,


That's what he said Keith. It's usual for wire sizes to be quoted as CSA - cross sectional area - rather than diameter.



And I spelled 'metre' wrong Embarassed
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mchaggis
World Chat Champion



Joined: 09 May 2004
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PostPosted: 20:20 - 08 Jan 2005    Post subject: Reply with quote
0.4mm thick if my calculation in correct. It might not be though. Smile

pi*r^2=0.5mm^2
(0.5/pi)^0.5=0.3989
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Kickstart
The Oracle



Joined: 04 Feb 2002
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PostPosted: 22:28 - 08 Jan 2005    Post subject: Re: Wire Gauge Reply with quote
Guest wrote:
That's what he said Keith. It's usual for wire sizes to be quoted as CSA - cross sectional area - rather than diameter.


Yes, but I would expect the electrical flex for home lighting to be rather heavier than that (nearer 0.75).

All the best

Keith
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Guest
Brolly Dolly



Joined: 22 Apr 2004
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PostPosted: 22:54 - 08 Jan 2005    Post subject: Reply with quote
For pendant lamps where the biggest lamp is usually 100 W then 0.5mm twin-core is ok.

For those fancy triple lamp fittings that my missus likes for some reason Rolling Eyes I'd use 0.75mm three-core so you've got an earth for each fitting.

Kettles, immersion heaters etc use 1.5mm three-core.





(Subject to changes in the IEE regs since I last fiddled - but they don't back date them anyway Wink )
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AdamBoyle
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Joined: 29 Aug 2004
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PostPosted: 15:51 - 09 Jan 2005    Post subject: Reply with quote
I took a quick look outside and my dad has only got 1.5mm and 2.5mm - looks like ive gotta have a trip upto my local B+Q (i cant believe there are NO specialist electrical retailers around here, even Maplins is 50 miles away!).. Cheers for your help guys!
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Old Thread Alert!

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