Reduction factor k2 for single-core and multi-core grouped cables according to the international standard IEC 60364-5-52
 
This section contains information about the current carrying capacity of the cables in relation to the installation method and other parameters.

Item
[n°]		 Arrangement (cables touching) Type of cable Number of circuit or multi_core cables
[n°]		 Reduction factor To be used with current-carrying capacities, reference
1 Bunched in air, embedded or enclosed Single-core or multi-core 1 1 Methods A to F
1 Bunched in air, embedded or enclosed Single-core or multi-core 2 0.8 Methods A to F
1 Bunched in air, embedded or enclosed Single-core or multi-core 3 0.7 Methods A to F
1 Bunched in air, embedded or enclosed Single-core or multi-core 4 0.65 Methods A to F
1 Bunched in air, embedded or enclosed Single-core or multi-core 5 0.6 Methods A to F
1 Bunched in air, embedded or enclosed Single-core or multi-core 6 0.57 Methods A to F
1 Bunched in air, embedded or enclosed Single-core or multi-core 7 0.54 Methods A to F
1 Bunched in air, embedded or enclosed Single-core or multi-core 8 0.52 Methods A to F
1 Bunched in air, embedded or enclosed Single-core or multi-core 9 0.5 Methods A to F
1 Bunched in air, embedded or enclosed Single-core or multi-core 12 0.45 Methods A to F
1 Bunched in air, embedded or enclosed Single-core or multi-core 16 0.41 Methods A to F
1 Bunched in air, embedded or enclosed Single-core or multi-core 20 0.38 Methods A to F
2 Single layer on wall, floor or unperforated tray Single-core or multi-core 1 1 Method C
2 Single layer on wall, floor or unperforated tray Single-core or multi-core 2 0.85 Method C
2 Single layer on wall, floor or unperforated tray Single-core or multi-core 3 0.79 Method C
2 Single layer on wall, floor or unperforated tray Single-core or multi-core 4 0.75 Method C
2 Single layer on wall, floor or unperforated tray Single-core or multi-core 5 0.73 Method C
2 Single layer on wall, floor or unperforated tray Single-core or multi-core 6 0.72 Method C
2 Single layer on wall, floor or unperforated tray Single-core or multi-core 7 0.72 Method C
2 Single layer on wall, floor or unperforated tray Single-core or multi-core 8 0.71 Method C
2 Single layer on wall, floor or unperforated tray Single-core or multi-core 9 0.7 Method C
2 Single layer on wall, floor or unperforated tray Single-core or multi-core 12 No further reduction factor for more than nine circuits or multicore cables Method C
2 Single layer on wall, floor or unperforated tray Single-core or multi-core 16 No further reduction factor for more than nine circuits or multicore cables Method C
2 Single layer on wall, floor or unperforated tray Single-core or multi-core 20 No further reduction factor for more than nine circuits or multicore cables Method C
3 Single layer fixed directly under a wooden ceiling Single-core or multi-core 1 0.95 Method C
3 Single layer fixed directly under a wooden ceiling Single-core or multi-core 2 0.81 Method C
3 Single layer fixed directly under a wooden ceiling Single-core or multi-core 3 0.72 Method C
3 Single layer fixed directly under a wooden ceiling Single-core or multi-core 4 0.68 Method C
3 Single layer fixed directly under a wooden ceiling Single-core or multi-core 5 0.66 Method C
3 Single layer fixed directly under a wooden ceiling Single-core or multi-core 6 0.64 Method C
3 Single layer fixed directly under a wooden ceiling Single-core or multi-core 7 0.63 Method C
3 Single layer fixed directly under a wooden ceiling Single-core or multi-core 8 0.62 Method C
3 Single layer fixed directly under a wooden ceiling Single-core or multi-core 9 0.61 Method C
3 Single layer fixed directly under a wooden ceiling Single-core or multi-core 12 No further reduction factor for more than nine circuits or multicore cables Method C
3 Single layer fixed directly under a wooden ceiling Single-core or multi-core 16 No further reduction factor for more than nine circuits or multicore cables Method C
3 Single layer fixed directly under a wooden ceiling Single-core or multi-core 20 No further reduction factor for more than nine circuits or multicore cables Method C
4 Single layer on an perforated horizontal or vartical tray Single-core or multi-core 1 1 Methods E and F
4 Single layer on an perforated horizontal or vartical tray Single-core or multi-core 2 0.88 Methods E and F
4 Single layer on an perforated horizontal or vartical tray Single-core or multi-core 3 0.82 Methods E and F
4 Single layer on an perforated horizontal or vartical tray Single-core or multi-core 4 0.77 Methods E and F
4 Single layer on an perforated horizontal or vartical tray Single-core or multi-core 5 0.75 Methods E and F
4 Single layer on an perforated horizontal or vartical tray Single-core or multi-core 6 0.73 Methods E and F
4 Single layer on an perforated horizontal or vartical tray Single-core or multi-core 7 0.73 Methods E and F
4 Single layer on an perforated horizontal or vartical tray Single-core or multi-core 8 0.72 Methods E and F
4 Single layer on an perforated horizontal or vartical tray Single-core or multi-core 9 0.72 Methods E and F
4 Single layer on an perforated horizontal or vartical tray Single-core or multi-core 12 No further reduction factor for more than nine circuits or multicore cables Methods E and F
4 Single layer on an perforated horizontal or vartical tray Single-core or multi-core 16 No further reduction factor for more than nine circuits or multicore cables Methods E and F
4 Single layer on an perforated horizontal or vartical tray Single-core or multi-core 20 No further reduction factor for more than nine circuits or multicore cables Methods E and F
5 Single layer on ladder support or cleats Single-core or multi-core 1 1 Methods E and F
5 Single layer on ladder support or cleats Single-core or multi-core 2 0.87 Methods E and F
5 Single layer on ladder support or cleats Single-core or multi-core 3 0.82 Methods E and F
5 Single layer on ladder support or cleats Single-core or multi-core 4 0.8 Methods E and F
5 Single layer on ladder support or cleats Single-core or multi-core 5 0.8 Methods E and F
5 Single layer on ladder support or cleats Single-core or multi-core 6 0.79 Methods E and F
5 Single layer on ladder support or cleats Single-core or multi-core 7 0.79 Methods E and F
5 Single layer on ladder support or cleats Single-core or multi-core 8 0.78 Methods E and F
5 Single layer on ladder support or cleats Single-core or multi-core 9 0.78 Methods E and F
5 Single layer on ladder support or cleats Single-core or multi-core 12 No further reduction factor for more than nine circuits or multicore cables Methods E and F
5 Single layer on ladder support or cleats Single-core or multi-core 16 No further reduction factor for more than nine circuits or multicore cables Methods E and F
5 Single layer on ladder support or cleats Single-core or multi-core 20 No further reduction factor for more than nine circuits or multicore cables Methods E and F

Altre notizie...

Characteristic temperatures of use of the cables in relation to the insulation
Proposed uses for the principal types of cable according to the version V2 of the Italian guide CEI 64-50
Minimum diameter (mm) of the flexible and rigid pipes in PVC, in relation to the section and the number of the cables
Examples of installation method according to the international standard IEC 60363-5-52
Examples of installation method according to the Italian standard CEI 64/8-5
Installation method according to the international standard IEC 60364-5-52
Installation method according to the Italian standard CEI 64/8-5
Selection of wiring system according to the international standard IEC 60364-5-52
Selection of wiring system according to the Italian standard CEI 64/8-5

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ABBBTICINOConergy Italia SpAEnecsysFLUKE ITALIAILTI LUCELEGRANDMeccanica NicolettiMazdaNEXANSOSRAMPHILIPSPrysmianRadiumREVERBERI ENETEC SRLSCHNEIDER ELECTRICThornVIMARZumtobel Illuminazione s.r.l.