Table 4F3A

Flexible Cords, Non-Armoured

Conductor
cross-sectional
area
Current-carrying capacity Maximum mass supportable by
twin flexible cord (see Regulations
522.7.2 and 559.6.1.5)
Single-phase a.c. Three-phase a.c.
1 2 3 4
(mm2) (A) (A) (kg)
0.5 3 3 2
0.75 6 6 3
1 10 10 5
1.25 13 5
1.5 16 16 5
2.5 25 20 5
4 32 25 5

Where cable is on a reel see the notes to the table in 4F1A.

Rating Factor for Ambient Temperature

60°C Thermoplastic or Thermosetting Insulated Cords:

Ambient Temperature: 35°C 40°C 45°C 50°C 55°C
Correction Factor: 0.91 0.82 0.71 0.58 0.41

90°C Thermoplastic or Thermosetting Insulated Cords:

Ambient Temperature: 35°C to 50°C 55°C 60°C 65°C 70°C
Correction Factor: 1.0 0.96 0.83 0.67 0.47

180°C Thermosetting Insulated Cords:

Ambient Temperature: 35°C to 120°C 125°C 130°C 135°C 140°C 145°C
Correction Factor: 1.0 0.96 0.85 0.74 0.60 0.42

Glass Fibre Cords:







Ambient Temperature: 35°C to 150°C 155°C 160°C 165°C 170°C 175°C
Correction Factor: 1.0 0.92 0.82 0.71 0.51 0.40

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