TABLE 8

GUIDELINES FOR CURRENT CARRYING CAPABILITIES OF 300/500V V-75 OR V-90 FLEXIBLE CORDS

Cross Section mm2 Current-Carrying Capacity (Amps) @ 25ºC Ambient Air Temperature
0.5 3
0.75 7.5
1.0 10
1.5 16
2.5 20
4.0 25

DE-RATING FACTORS FOR MULTICORE CABLES UP TO 10MM²

Number of Current Carrying Cores De-rating Factor
5 0.75
7 0.65
10 0.55
14 0.50
19 0.45
24 0.40
40 0.35
61 0.30

CABLES ON A DRUM OR REEL DURING OPERATION (IN LAYERS)

Where layers of flexible cable are accommodated on a cylindrical-type drum or reel, multiply the values by the appropriate factor as follows:

Number of layers Derating Factor
1 2 3 4
0.85  0.65  0.45 0.35

Where a spiral layer of flexible cable is accommodated on a radial-type drum, multiply the values by a factor of 0.85 for a ventilated drum and 0.75 for unventilated drums.

Handling and installing cables on drums and reels requires special care (especially power reeling). Please contact our technical team for details on the correct handling and installation of drum / reeling cables.

DE-RATING FACTORS FOR MULTICORE CABLES UP TO 10MM²

 

Number of Current Carrying Cores De-rating Factor
5 0.75
7 0.65
10 0.55
14 0.50
19 0.45
24 0.40
40 0.35
61 0.30

Firstflex has taken every precaution to ensure accurate information in this catalogue but accept no liability for any errors or omissions. Firstflex reserves the right to modify specifications at any time.