===== Tables for current-carrying capacity and voltage drops of old Imperial-sized British cables, as per IEE Wiring Regs. 14th Edition, 1966. ===== [url=http://electrical-contractor.net/PC/IEE1966_T3.jpg]Table 3: PVC sheathed twin & multi-core, copper[/url] [url=http://electrical-contractor.net/PC/IEE1966_T9.jpg]Table 9: Butyl & silicone twin & multi-core, copper[/url] For comparison, here is a table from the previous Regs. This is taken from the ASEE Guide to the 13th Edition, 1955, as amended to December 1963: [url=http://electrical-contractor.net/PC/ASEE_T13.jpg]Table 13: Twin & multi-core rubber/polythene/PVC insulated cables[/url]