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5
WIRING DIAGRAMS
C-2 CIRCUIT
FOR SINGLE
ELEMENT HEATERS
EQUIPPED WITH HIGH
LIMIT CONTROL
Size Temperature Rating of Conductor
See Table 310-13 in Code
AMG 60° C 75° C
MCM (140° F) (167° F)
TYPES: TYPES:
RUW RH, RHW, RUH,
(14-2), (14-2), THW
T, TW, THWN, XHHW,
UF USE
18 - - - - - -
16 - - - - - -
14 15 15
12 20 20
10 30 30
840 45
655 65
470 85
3 80 100
Size Temperature Rating of Conductor
See Table 310-13 in Code
AMG 60° C 75° C
MCM (140° F) (167° F)
TYPES: TYPES:
RUW RH, RHW, RUH,
(12-2), (12-2), THW
T, TW, THWN, XHHW,
UF USE
12 15 15
10 25 25
830 40
640 50
455 65
365 75
275 90
1 85 100
FACTORY WIRED
---------- FIELD WIRING
† WHITE FOR 120V
AND 277V
Portion of Table 310-18 follows:
Allowable Ampacities of Insulated Aluminum and Copper -Clad Aluminum Conductors.
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 310-13 in Code.
For ambient temperatures over 30° C (86° F), see Correction Factors, Note 13 in Code.
A-8 CIRCUIT FOR DUAL ELEMENT HEATER