SELECTION OF ELECTRICAL CABLE CROSS-SECTION
I
current
I
current
14.2 A
I
cable
>
I
fuse
>
I
current
I
cable
>
I
fuse
>
I
current
I
cable
= 24A
S3 = 1.5 mm²
Cable cross-section S=Max (S1, S2, S3, 1.5 mm²)
S=Max (1.5, 1.5, 1.5, 1.5)
S=1.5 mm²
I
cable
>
16A
>
14.2A
“I
fuse
”which will be higher than “I
current
”, is selected.
S2
>
1.46 mm² > 1.5 mm²
S2 = 1.5 mm²
Cable Cross-Section S=Max (S1, S2, S3, 1.5mm²)
%e
S
1.46 mm²
S
,
I
current
I
cable
The cable will be used, is selected from the cable cross-section
table so that the equivalent ampere value in the table should
be higher than calculated “I
current
” value.
The cable will be used, is selected from the cable cross-section
table so that the equivalent ampere value in the table should
be higher than selected “I
fuse
” value.
%e=%3
%e=%3
S1 = 1.5 mm²
1
1
P
I
U
S
k
L
%e
:
:
:
:
:
:
:
Power
Current
Voltage
Conductor cross section
Conductor coefficient
Conductor length
The voltage drop
2
2
3
3
>
P
2600 W
100.P.L
100.2600.50
100.P.L
U.CosQ
230.0,8
k.S.U²
56.3.230²
k.%e.U²
=
=
=
=
=
=
=
P
U
PF
L
%e
k
:
:
:
:
:
:
2,6 kW
230V
CosQ : 0,8
50m
%3
56m /
Unit Model
Unit Voltage
(V)
Unit Power Input
(kW)
350
780
930
1.440
1.800
2.440
2.780
3.500
4.650
5.735
230
230
230
230
230
230
230
230
230
230
0,1
0,2
0,3
0,45
0,45
1,03
1,03
0,94
1,36
2,6
1
1
2
3
3
6
6
6
8
14,2
1
2
3
3
3
10
10
10
10
16
1,5
1,5
1,5
1,5
1,5
1,5
1,5
1,5
1,5
1,5
Current
(A)
Fuse
(A)
Cable Cross - Section (mm²)
for 50M and PF=0,8
ENERGY BOX - TO
Cable Cross-Section Formulas
Example of Cable Cross-Section Calculation
9
+30.211.70.55.500 +30.210.22.23.283
