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    Current Carrying Capacities And Voltage Drop - Airport ULV Cables

    Conductor Operating Temperature : 90°C

    Ambient Temperature : 30°C

    Current-Carrying Capacities (Amp)

    Conductor Cross Sectional Area Reference Method 4 (enclosed in conduit in thermally insulating wall etc) Reference Method 3 (enclosed in conduit on a wall or in trunking etc) Reference Method 1 (clipped direct) Reference Method 11 (on a perforated cable tray, horizontal or vertical) Reference Method 12 (free air)
    Horizontal flat spaced Vertical flat spaced Trefoil
    2 cables, single phase a.c. or d.c. 3 or 4 cables, 3-phase a.c. 2 cables, single phase a.c. or d.c. 3 or 4 cables, 3-phase a.c. 2 cables, single phase a.c. or d.c. flat and touching 3 or 4 cables, 3-phase a.c. flat and touching or trefoil 2 cables, single-phase a.c. or d.c. or flat and touching 3 or 4 cables, 3-phase a.c. flat and touching or trefoil 2 cables, single phase a.c. or d.c. or 3 cables three phase 2 cables, single phase a.c. or d.c. or 3 cables three phase 3 cables, trefoil 3-phase phase a.c.
    1 2 3 4 5 6 7 8 9 10 11 12
    mm² A A A A A A A A A A A
    1.0 13 - - - 15 - - - - - -
    1.5 18 17 22 19 25 23 - - - - -
    2.5 24 23 30 26 34 31 - - - - -

    Voltage Drop (Per Amp Per Meter)

    Nominal Cross Section Area 2 cables d.c. 2 cables, single-phase a.c. 3 or 4 cables, 3-phase a.c.
    Ref. Methods 3 and 4 (enclosed in conduit etc, in or on a wall) Ref. Methods 1 and 11 (clipped direct or on trays touching) Ref. Methods 3 and 4 (enclosed in conduit etc, in or on a wall) Ref. Methods 1, 11 and 12 Ref. Methods 1 and 11
    (in trefoil) (Flat and touching)
    1 2 3 4 5 6 7
    mm² mV/A/m mV/A/m mV/A/m mV/A/m mV/A/m mV/A/m
    1.0 46 46 - - - -
    1.5 31 31 27 27 27 27
    2.5 19 19 16 16 16 16
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