So I was looking at upgrading the shed power to 20amp ,but having an old school 1986 power box with those old 10amp breakers (the white porcelain ones with the breakable wires). The shed runs its own circuit. I was advised to upgrade the line to the shed to a 6 mm one, which I'm 90% sure it is 6mm already as it has 400/750v written on the 3 core cabling casing. Matches the one selling at bunnings. My question is what do I need to purchase to have 20amp running to the shed? Also i would like to have a sub breaker box in the shed too. What do I need to purchase?
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