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csa = pieR2 and resistance = (17.2(micro) ohms (this is given resistivity for copper) x Length of cable) / cross sectional area

sorry i meant for when i connect them up, not connected at the minute

Might be a daft question but how can you tell the polarity of the wires coming out of my spotlights both white cabling.

Thanks for your help, the lights im going to be fitting are going into a bedroom so its loft work, i want to basically get rid of the light fitting thats all. As for the lights they mount onto the ceiling rather that in them.

cant find anything that really answers my question. i have the wiring going into my ceiling rose and i want to use this wire and connect up 6 50w spots but how do i do this?

Good question i also want to know this so someone please help out.

Ok so my wiring is not as old as the invention of bread but still how do i go about this task of wiring these 6 spots up?

Hello, new to this so here goes- ive just purchased 6 240v 50w spots and was wondering whats the best way to fit these i assume just remove the wiring from the origanal light and connect this up to the first spot and continue the circuit round to all 6? Can someone please explain how to do this...