Selecting The Power Cables - SDMO R33C3 User And Maintenance Manual

Selecting the power cables

4.2.3.2.
The calculation rules used to choose the power connection cable size are defined below:
- Identify the current shown on the generating set's identification plate.
- From the table below, select the circuit breaker rating directly above the current shown on the generating set's identification
plate.
- Choose the corresponding cable size.
.
Three-phase
Permitted drop in voltage = 5% / Multi-core conductors or connected single-core conductors where rating = 4X...(1) / Cable type
PVC 70°C (e.g. H07RNF) / Ambient temperature = 30°C.
Circuit breaker
rating
(A)
10
16
20
25
32
40
50
63
80
100
125 (1)
160 (1)
250 (1)
400 (1)
630 (1)
Single phase
Permitted drop in voltage = 5% / Multi-core conductors / Cable type PVC 70°C (e.g. H07RNF) / Ambient temperature =30°C.
Circuit breaker
rating (A)
10
16
20
25
32
40
50
63
80
100
125
* : AWG. American Wire Gauge, American standard for electrical cables.
0 - 50m
mm²/AWG*
1.5 / 14
2.5 / 12
2.5 / 12
4 / 10
6 / 9
10 / 7
10 / 7
16 / 5
25 / 3
35 / 2
4X(1X50) / 0
4X(1X70) / 2/0
4X(1X95) / 4/0
4X(1X185) / 0400MCM
4X(2X1X150) / 2x 2350MCM
0 - 50m
mm²/AWG*
4 / 10
6 / 9
10 / 7
10 / 7
10 / 7
16 / 5
16 / 5
25 / 3
35 / 2
35 / 2
50 / 0
Cable sizes
51 - 100m
mm²/AWG*
2.5 / 12
4 / 10
4 / 10
6 / 9
6 / 9
10 / 7
10 / 7
16 / 5
25 / 3
35 / 2
4X(1X50) / 0
4X(1X70) / 2/0
4X(1X150) / 2350MCM
4X(1X185) / 0400MCM
4X(2X1X150) / 2x 2350MCM
Cable sizes
51 - 100m
mm²/AWG*
10 / 7
10 / 7
16 / 5
16 / 5
25 / 3
35 / 2
35 / 2
50 / 0
50 / 0
70 / 2/0
95 / 4/0
45/242
101 - 150m
mm²/AWG*
4 / 10
6 / 9
6 / 9
10 / 7
10 / 7
16 / 5
16 / 5
25 / 3
35 / 2
4X(1X50) / 0
4X(1X70) / 2/0
4X(1X95) / 4/0
4X(1X150) / 2350MCM
4X(1X185) / 0400MCM
4X(2X1X150) / 2x 2350MCM
101 - 150m
mm²/AWG*
10 / 7
16 / 5
25 / 3
25 / 3
35 / 2
50 / 0
50 / 0
70 / 2/0
95 / 4/0
95 / 4/0
120 / 2250MCM