ELECTRICAL
Notes 1. The above current ratings are taken from Table 4D2 (maximum conductor operating temperature of 70°C) as required by the 18th Edition of IEE Wiring Regulations BS7671 and IEC 60364-5-52. However, these cables are capable of operating at 90°C in which case the higher current ratings of Table 4E2 can be used providing it has been ascertained that the equipment connected to the conductor is suitable for the higher conductor operating temperature. 2. Protective devices used for these cables shall be either Type B to BS EN 60898 or Type B RCBO to BS EN 61009-1. The protective devices shall have a maximum let through energy (l2t) of 42000A2s when used with 1.0mm2 or 1.5mm2 cable and 60000 A2s when used with 2.5mm2 or 4.0mm2 cable.
Current Carrying Capacity and Voltage Drop
NOMINAL CROSS SECTIONAL AREA
mm2 |
CURRENT RATING CLIPPED DIRECT)
Amps |
NOMINAL CROSS SECTIONAL AREA
mm2 |
CURRENT RATING CLIPPED DIRECT)
Amps |
| Single Phase AC or DC |
Three Phase AC |
| 1 |
15 |
13/5 |
| 1/5 |
19/5 |
17/5 |
| 2/5 |
27 |
24 |
| 4 |
36 |
32 |
VOLTAGE DROP
NOMINAL CROSS SECTIONAL AREA
mm2 |
DC
mV/A/m |
SINGLE PHASE AC
mV/A/m |
THREE PHASE AC
mV/A/m |
NOMINAL CROSS SECTIONAL AREA
mm2 |
DC
mV/A/m |
SINGLE PHASE AC
mV/A/m |
THREE PHASE AC
mV/A/m |
| 1 |
44 |
44 |
38 |
| 1.5 |
29 |
29 |
25 |
| 2.5 |
18 |
18 |
15 |
| 4 |
11 |
11 |
9/5 |
Notes 1. The above current ratings are taken from Table 4D2 (maximum conductor operating temperature of 70°C) as required by the 18th Edition of IEE Wiring Regulations BS7671 and IEC 60364-5-52. However, these cables are capable of operating at 90°C in which case the higher current ratings of Table 4E2 can be used providing it has been ascertained that the equipment connected to the conductor is suitable for the higher conductor operating temperature. 2. Protective devices used for these cables shall be either Type B to BS EN 60898 or Type B RCBO to BS EN 61009-1. The protective devices shall have a maximum let through energy (l2t) of 42000A2s when used with 1.0mm2 or 1.5mm2 cable and 60000 A2s when used with 2.5mm2 or 4.0mm2 cable.
