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Current carrying capacity for power and signal cables

The current carrying capacity of PVC/PUR-insulated copper cables is specified for installation types B1, B2, C and E under continuous operating conditions in the table with reference to an ambient air temperature of 40 °C (104 °F). For other ambient temperatures, the values must be corrected by the derating factors from the table.

Cross-section	Current carrying capacity rms AC 50/60 Hz or DC in amps for installation type
	B1	B2	C	E
mm²	Single-core cables in conduits or installation ducts	Multi-core cables in conduits or installation ducts	Multi-core cables, vertically or horizontally on walls/open, without conduits and installation ducts/with contact	Multi-core cables, horizontally or vertically on perforated cable racks/open, without conduits and installation ducts/with contact
Electronics¹⁾
0.2	–	4.3	4.4	4.4
0.5	–	7.5	7.5	7.8
0.75	–	9	9.5	10
Power²⁾
0.75	8.6	8.5	9.8	10.4
1	10.3	10.1	11.7	12.4
1.5	13.5	13.1	15.2	16.1
2.5	18.3	17,4	21	22
4	24	23	28	30
6	31	30	36	37
10	44	40	50	52
16	59	54	66	70
25	77	70	84	88
35	96	86	104	110
50	117	103	125	133
70	149	130	160	171
95	180	165	194	207
120	208	179	225	240

¹⁾ One control circuit pair.

²⁾ One symmetrically loaded three-phase AC cable.

Derating factors for power and signal cables

Ambient air temperature °C (°F)	Derating factor according to EN 60204-1, Table D.1
30 (86)	1.15
35 (95)	1.08
40 (104)	1
45 (113)	0.91
50 (122)	0.82
55 (131)	0.71
60 (140)	0.58

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