Size | Temperature Rating of Conductor | |
| See Table | |
AMG | 60° C | 75° C |
MCM | (140° F) | (167° F) |
| TYPES: | TYPES: |
| RUW | RH, RHW, RUH, |
| ||
| T, TW, | THWN, XHHW, |
| UF | USE |
18 | - - - | - - - |
16 | - - - | - - - |
14 | 15 | 15 |
12 | 20 | 20 |
10 | 30 | 30 |
8 | 40 | 45 |
6 | 55 | 65 |
4 | 70 | 85 |
3 | 80 | 100 |
Size | Temperature Rating of Conductor | |
| See Table | |
AMG | 60° C | 75° C |
MCM | (140° F) | (167° F) |
| TYPES: | TYPES: |
| RUW | RH, RHW, RUH, |
| ||
| T, TW, | THWN, XHHW, |
| UF | USE |
12 | 15 | 15 |
10 | 25 | 25 |
8 | 30 | 40 |
6 | 40 | 50 |
4 | 55 | 65 |
3 | 65 | 75 |
2 | 75 | 90 |
1 | 85 | 100 |
|
|
|
Portion of Table 310-18 follows:
Allowable Ampacities of Insulated Aluminum and Copper
Not more than three conductors in Raceway or Cable or Direct Burial (Based on Ambient Temperature of 30° C, 86° F. These ampacities relate only to conductors described in Table
For ambient temperatures over 30° C (86° F), see Correction Factors, Note 13 in Code.
WIRING DIAGRAMS
FOR SINGLE
ELEMENT HEATERS
EQUIPPED WITH HIGH
LIMIT CONTROL
FACTORY WIRED
† WHITE FOR 120V
AND 277V
5