Google has not been my friend lately. Seems simple but I can't locate some electrical data.
Where on Google can I find a simple table showing the typical resistence per metre of mains flex with copper conductors and different cross-sectional areas (0.5 mm^2, 0.75 mm^2, etc)? Measured at room temperature. Would *tinned* copper conductors make a a noticeable difference to the resistivity?
I am in ther UK. If I measure the resistence of 10 metres of mains flex with my DC ohm-meter then will my resistence reading be noticeably different to the resistence when I actually make use of the 10 metre flex to light a 500W floodlight powered from the AC mains at 230 volts/50 Hz?
Thank you.