B33 wire size

[RichardAB]

Please could anyone advise what size wire I need for 1960 B33 Alternator model. Thank you

[Derek996]

2mm sq. Something like this : https://www.vehiclewiringproducts.co.uk/c-48-cables/c-198-single-core-pvc-thin-wall-cable/p-975-25-amp-2mm-sq-28-0-30

[paulm]

wire is based on amps if your on a 12 volt with say a 120 watt alternator you will produce 10 amp (watts divided by volts, build in a few amps so say 15 watts for main feeds and ancillary's lights etc use same calculations

[RichardAB]

Thank you all for advice