Electrical Wire Size Chart. The number and type of electrical devices connected to a circuit determine the amperage requirement of the circuit. Each one of the live and neutral wires has a cross sectional area of 1.5mm or 2.5mm.
Two wire 240 volt outlets can be up to 15 amps and up to 200 amps depending on the existing grounding system. It is a unit for referring to the area of a wire with a circular cross section. International standard wire sizes (iec 60228) 0.5 mm².
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Iec 60228 is the international electrotechnical commission's international standard on conductors of insulated cables. For the 00, 000, 0000 etc. Electrical current is measured in ampacity, and each wire gauge has a maximum safe carrying capacity. 1.5mm cable means a cross sectional area of 1.5mm of the live or neutral wire.
