Electrical Cable Size and Ampacity

Cross Section (mm²)	Approximate Overall Diameter (mm)	Single Phase (Amps)	Three Phase (Amps)
1.5	2.9	17.5	15.5
2.5	3.53	24	21
4	4.4	32	28
6	4.68	41	36
10	5.98	57	50
16	6.95	76	68
25	8.7	101	89
35	10.08	125	110
50	11.8	151	134
70	13.5	192	171
95	15.7	232	207
120	17.4	296	239
150	19.3	300	262
185	21.5	341	296
240	24.6	400	346
300	27.9	458	394
400	30.8	546	467
500	33.8	626	533

Twin-Core and Earth Electrical Cable Size Chart Amps

Size	Amps	Energy	Utility
1.0 mm2	14A	3.25kW at 240V	lighting applications
1.5 mm2	18A	4.25kW at 240V	lighting applications
2.5 mm2	24A	5.75kWat 240V	power circuits
4.0 mm2	32A	7.75kW at 240V	power circuits and shower applications
6.0 mm2	40A	12.9kW at 240V	shower and cooker applications
10 mm2	53A	12.9kW at 240V	cooker applications