Recommended Power Cable Dimensions

For the power cables sizes it is recommended to follow the table below based on IEC/EN 60950–1 COMPIL:2013. The table only lists recommended minimum size. Always follow applicable local and/or national electrical codes.

NOTE: For the rated current see the rating plate of the system for the different power cables.

NOTE: Consider the length of the cable, especially for DC power cables. A larger cross-section might be required for long cables due to the voltage drop.

Rated current [A]	Minimum conductor sizes
Rated current [A]	Nominal cross-sectional area mm²	AWG or kcmil [cross-sectional area in mm²]*
Up to and including 25	2,5	12 [3]
Over 25 up to and including 32	4	10 [5]
Over 32 up to and including 40	6	8 [8]
Over 40 up to and including 63	10	6 [13]
Over 63 up to and including 80	16	4 [21]
Over 80 up to and including 100	25	2 [33]
Over 100 up to and including 125	35	1 [42]
Over 125 up to and including 160	50	0 [53]
Over 160 up to and including 190	70	000 [85]
Over 190 up to and including 230	95	0000 [107]
Over 230 up to and including 260	120	250 kcmil [126]
Over 260 up to and including 300	150	300 kcmil [152]
Over 300 up to and including 340	185	400 kcmil [202]
Over 340 up to and including 400	240	500 kcmil [253]
Over 400 up to and including 460	300	600 kcmil [304]