Triplexed Conductors - Underground Direct Burial

Triplexed cable direct burial

Triplexed cable
direct burial

Triplexed cables or three single conductors buried 36” deep and separated by 24”. Shields bonded and grounded at multiple points.

Earth ambient temperature 20°C
Earth thermal resistivity RHO 90
100% load factor

 

One circuit

Three single or triplexed conductors
Copper - direct burial
Three single or triplexed conductors
Aluminum - direct burial

Conductor
Size
AWG-kcmil

Non-Shielded

Shielded

600-2000 Volts
Ampacity

2001-5000 Volts
Ampacity

5001-35000 Volts
Ampacity

90° C
(194°F)

90° C
(194°F)

105°C
(221°F)

90° C
(194°F)

105°C
(221°F)

8.........
.
6
.........
4
.........
2
.........
1
.........
1/0
.........
2/0
.........
3/0
.........
4/0
.........
250
.........
350
.........
500
.........
750
.........
1000
........\

92.........
118
.........
153
.........
197
.........
223
.........
255
.........
289
.........
329
.........
373
.........
408
.........
490
.........
592
.........
724
.........
825
.........

90...
120
...
150
...
195
...
225
...
255
...
290
...
330
...
375
...
410
...
490
...
590
...
725
...
825
...

100...
125
...
165
...
210
...
240
...
275
...
310
...
355
...
400
...
440
...
530
...
640
...
780
...
890
...

...
115
...
150
...
190
...
215
...
245
...
275
...
315
...
360
...
390
...
470
...
565
...
685
...
770
...

...
125
...
160
...
200
...
230
...
265
...
300
...
340
...
385
...
420
...
505
...
605
...
735
...
830
...

Non-Shielded

Shielded

600-2000 Volts
Ampacity

2001-5000 Volts
Ampacity

5001-35000 Volts
Ampacity

90° C
(194°F)

90° C
(194°F)

105°C
(221°F)

90° C
(194°F)

105°C
(221°F)

72.........
92
.........
119
.........
153
.........
174
.........
198
.........
226
.........
257
.........
291
.........
319
.........
385
.........
467
.........
579
.........
672
.........

70...
90
...
120
...
155
...
175
...
200
...
225
...
255
...
290
...
320
...
385
...
465
...
580
...
670
...

80...
100
...
130
...
165
...
185
...
215
...
245
...
275
...
315
...
345
...
415
...
505
...
625
...
725
...

...
90
...
115
...
145
...
165
...
190
...
215
...
245
...
280
...
305
...
370
...
445
...
550
...
635
...

...
100
...
125
...
160
...
180
...
205
...
235
...
265
...
300
...
330
...
400
...
480
...
595
...
685
...

 

Two circuits

Three single or triplexed conductors
Copper - direct burial
Three single or triplexed conductors
Aluminum - direct burial

Conductor
Size
AWG-kcmil

Non-Shielded

Shielded

600-2000 Volts
Ampacity

2001-5000 Volts
Ampacity

5001-35000 Volts
Ampacity

90° C
(194°F)

90° C
(194°F)

105°C
(221°F)

90° C
(194°F)

105°C
(221°F)

8.........
.
6
.........
4
.........
2
.........
1
.........
1/0
.........
2/0
.........
3/0
.........
4/0
.........
250
.........
350
.........
500
.........
750
.........
1000
........\

85.........
109
.........
141
.........
181
.........
205
.........
233
.........
264
.........
300
.........
339
.........
370
.........
444
.........
534
.........
649
.........
738
.........

85...
110
...
140
...
180
...
205
...
235
...
265
...
300
...
340
...
370
...
445
...
535
...
650
...
740
...

90...
115
...
150
...
195
...
220
...
250
...
285
...
325
...
365
...
400
...
480
...
575
...
700
...
795
...

...
105
...
140
...
175
...
200
...
225
...
255
...
290
...
325
...
355
...
425
...
510
...
615
...
690
...

...
115
...
150
...
185
...
215
...
240
...
275
...
310
...
350
...
385
...
460
...
550
...
660
...
740
...

Non-Shielded

Shielded

600-2000 Volts
Ampacity

2001-5000 Volts
Ampacity

5001-35000 Volts
Ampacity

90° C
(194°F)

90° C
(194°F)

105°C
(221°F)

90° C
(194°F)

105°C
(221°F)

67.........
85
.........
110
.........
141
.........
160
.........
182
.........
206
.........
234
.........
265
.........
289
.........
348
.........
421
.........
520
.........
601
.........

65...
85
...
110
...
140
...
160
...
180
...
205
...
235
...
265
...
290
...
350
...
420
...
520
...
600
...

70...
90
...
120
...
150
...
170
...
195
...
220
...
250
...
285
...
310
...
375
...
455
...
560
...
645
...

...
85
...
105
...
135
...
155
...
175
...
200
...
225
...
255
...
280
...
335
...
405
...
485
...
565
...

...
90
...
115
...
145
...
165
...
190
...
215
...
240
...
275
...
300
...
360
...
435
...
535
...
610
...