Low Voltage Electricity Wiring Code
CS-CSI-P1/C1
Table No. 10
LOW VOLTAGE ELECTRICITY WIRING CODE
Three and Four Cores PVC Insulated, Steel Wire Armoured,
PVC Sheathed and PVC Insulated,
PVC Sheathed ( Unarmoured ) Cables
mm²
1.5
2.5
4
6
10
16
25
35
50
70
95
120 150 185 240 300 400
Voltage Drop Per
Ampere Per Meter mV
24
15
9.1
6
3.6
2.2
1.5
1
0.81
0.57
0.42
0.34
0.29
0.24
0.2
0.18
0.17
Current Rating For Cable
Laid Directly In The
Ground Ampere
14
20
26
33
50
65
73
87
104
123
150
170
190
215
250
280
315
Current Rating For Cable
Run In Underground
Pipe Or Trench Ampere
14
20
25
32
42
54
70
82
100
120
150
164
190
210
250
262
300
Current Rating For Cable
Run In Air Within A
Building Ampere
15
20
26
33
45
60
80
100
119
150
200
220
300
350
400
450
-
Current Rating For Cable
Run In Air On Exterior
Of A Building Or Part
Thereof Ampere
13
17
23
30
40
52
75
85
110
140
170
200
230
250
300
350
400
Note: For groups of cables covered under Tables Nos. 09 And 10 above, the single cable rating shall
apply provided that when the cables are run in both horizontal and vertical planes, the minimum
clearance between cables shall be 25 mm. Where it is not possible to comply with this then it shall
be the responsibility of the Consultant / Contractor to seek advice from the Qatar General Electricity
& Water Corporation “KAHRAMAA”. Double banking of cables run in the horizontal plane is not
permitted.
Table No. 11
Three And Four Cores XLPE Insulated, Steel Wire Armoured,
PVC Sheathed Cables
mm²
16
25
35
50
70
95
120
150
185
240
300
Voltage Drop Per Ampere Per
Meter mV
2.6
1.5
1.2
0.87
0.61
0.45
0.36
0.29
0.24
0.2
0.18
Current Rating For Cable Laid Directly
In The Ground Amperes
71
93
112
133
164
195
223
251
285
329
366
Current Rating For Cable Run In
Underground Pipe Or Trench Amperes
65
84
100
123
151
182
210
235
266
308
350
Current Rating For Cable Run In Air
Within A Building Amperes
81
110
150
170
208
255
300
350
400
476
550
Current Rating For Cable Run In Air On
Exterior Of A Building Or Part Thereof
Amperes
80
102
136
150
200
250
276
323
367
450
500
Note: For groups of cables covered under Table Nos. 11 the single cable rating shall apply provided
that when the cables are run in both horizontal and vertical planes, the minimum clearance between
cables shall be 25 mm. Where it is not possible to comply with this then it shall be the responsibility
of the Consultant / Contractor to seek advice from the Qatar General Electricity & Water Corporation
“KAHRAMAA”. Double banking of cables run in the horizontal plane is not permitted. X.L.P.E. cable
shall not be used below 16 mm² cross section.
Due to the difficulty of laying and bending 3 and 4 core 400 mm2 cables, special approval is required
where use.
Page 86 of 91
Issue : 0
16-10-2016
Unclassified