Current Carrying Capacities and Voltage Drop

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
Contact Us

Add the link of current page.

Clear

Submit

Instant Messaging

WhatsApp :

+852 6230 0392

Skype :

Caledonian Cables

live:1cb87739a29fb08c

Wechat :
The personal information you enter is only used to reply to your message, It will not be leaked or used for other purposes.