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(Table 400-5(B) Ampacity of Cable Type SC, SCE, SCT, PPE,G, G-GC, and W [based on ambient temperature of 30oC (86oF). See Table 400-4]. Source: NFPA70 - The National Electric Code
| Temperature Rating of Cable |
Size
(AWG) |
60oC (140oF) |
75oC (167oF) |
90oC (194oF) |
| D1 |
E2 |
F3 |
D1 |
E2 |
F3 |
D1 |
E2 |
F3 |
| 8 |
60 |
55 |
48 |
70 |
65 |
57 |
80 |
74 |
65 |
| 6 |
80 |
72 |
63 |
95 |
88 |
77 |
105 |
99 |
87 |
| 4 |
105 |
96 |
84 |
125 |
115 |
101 |
140 |
130 |
114 |
| 3 |
120 |
113 |
99 |
145 |
135 |
118 |
165 |
152 |
133 |
| 2 |
140 |
128 |
112 |
170 |
152 |
133 |
190 |
174 |
152 |
| 1 |
165 |
150 |
131 |
195 |
178 |
156 |
220 |
202 |
177 |
| 1/0 |
195 |
173 |
151 |
230 |
207 |
181 |
260 |
234 |
205 |
| 2/0 |
225 |
199 |
174 |
265 |
238 |
208 |
300 |
271 |
237 |
| 3/0 |
260 |
230 |
201 |
310 |
275 |
241 |
350 |
313 |
274 |
| 4/0 |
300 |
265 |
232 |
360 |
317 |
277 |
405 |
361 |
316 |
| 250 |
340 |
296 |
259 |
405 |
354 |
310 |
455 |
402 |
352 |
| 300 |
375 |
330 |
289 |
445 |
395 |
346 |
505 |
449 |
393 |
| 350 |
420 |
363 |
318 |
505 |
435 |
381 |
570 |
495 |
433 |
| 400 |
455 |
392 |
343 |
545 |
469 |
410 |
615 |
535 |
468 |
| 510 |
515 |
448 |
392 |
620 |
537 |
470 |
700 |
613 |
536 |
1 The ampacities under subheading D shall be permitted single-conductor Types SC, SCE. SCT. PPE. and W cable only where the individual conductors are not installed in raceways and are not in physical contact with each other except in lengths not to exceed 24 in (610 mm) where passing through the wall of an enclosure.
2 The ampacities under subheading E apply to two-conductor cables and other multiconductor cables connected to utilization equipment so that only two conductors are current carrying.
3 The ampacities under subheading F apply to three-conductor cables and other multiconductor cables connected to utilization equipment so that only three conductors are current carrying. |
