Power capacity of cabling
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There's a drum of the 1.00mm flat twin and earth stuff in my garage that tells me that it is for lighting curcuits but, unlike its 2.5mm neighbour, doesn't say what its rating is. The following link would have you believe that 1.5mm is limited to 18 amps in free air. My 2.5mm cable says it's limited to 24 amps in free air, and that agrees with the following link. This link is to a site more for DIY than industry but it might be a help.
http://www.diydata.com/materials/ele...tric_cable.htm
http://www.diydata.com/materials/ele...tric_cable.htm
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Yes, from what I remember of the IEE 14th Edition, 1mm is for "lighting circuits" and 1.5 mm is for "heavy lighting". 1mm usually fused at 5 amps but will carry about 10, 1.5mm will carry 15 amps. 2.5mm can be used "singly" on a spur at 20amps but is normally used on a ring circuit and fused at 30.