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Model
Supply
Number
Circuit
Amperes
E3E(*)
-010H
Single
Single
-012H
Dual "A"
Dual "B"
Single
-015H
Dual "A"
Dual "B"
Single
-017H
Dual "A"
Dual "B"
Single
-020H
Dual "A"
Dual "B"
Single
Dual "A"
-023H
Dual "B"
Model
Supply
Number
Circuit
Amperes
E3EX
-010
Single
Single
-012
Dual "A"
Dual "B"
Single
Dual "A"
-015
Dual "B"
Single
-017
Dual "A"
Dual "B"
Single
-020
Dual "A"
Dual "B"
Replacement furnace for E2E(*)-015HB
Single
E2E(*)-
Dual "A"
015HBR
Dual "B"
* Can be H or B
CAUTION: When sizing the wire, you must follow the guidelines of the
latest revision of the NEC. NM-B wire is equivalent to "Romex" cable. SEU
is equivalent to service entry cable. For NEC type NM-B wire, you must
size the wire using 60C ratings per NEC article 326.
* Minimum overcurrent protection per NEC 424-3b not to be less than 125%
of total amps for fi xed resistance heat.
Model Number
E3E(*)
-012H
-015H
-017H
-020H
-023H
Replacement furnace for E2E(*)-015HB
E2E(*)-015HBR
Table 9b. Recommended Electrical Application Guide
** Alternate wiring combinations can be used. Refer to the latest revision of the NEC for these
appropriate alternate combinations.
22
Maximum
Minimum
Total
Over-current
Circuit
Rating
Ampacity
45.5
60
52.1
70
28.0
40
24.2
30
66.3
90
45.5
60
20.8
30
71.3
90
48.8
60
22.5
30
87.1
125
109
45.5
60
41.7
60
93.8
125
117
52.1
60
41.7
60
Maximum
Minimum
Total
Over-current
Circuit
Rating
Ampacity
47.7
60
54.3
70
30.2
40
24.2
30
66.0
90
46.0
60
20.0
30
71.5
90
51.0
60
22.5
30
86.0
125
109
46.0
60
40.0
60
67.1
90
35.5
50
31.7
40
Table 9a. Electrical Specifi cations
Circuit "A"
Wire Gauge
and Type
#8 NM-B
#6 SEU
#6 SEU
#6 SEU
#6 SEU
#8 SEU
for Dual Circuit Installations**
Copper Wire Size - See
Caution Below
60°C
90°C
(e.g., Romex)
(e.g., SEU)
57
4
6
65
4
6
35
8
8
30
10
10
83
2
4
56
4
6
26
10
10
89
2
4
60
4
6
28
10
10
0
2
57
4
6
52
4
6
0
2
60
4
6
56
4
6
Copper Wire Size - See
Caution Below
60°C
90°C
(e.g., Romex)
(e.g., SEU)
57
4
6
67
4
6
35
8
8
30
10
10
83
2
4
57
4
6
25
10
10
89
2
4
60
4
6
28
10
10
0
2
57
4
6
50
4
6
83
2
4
44
6
8
39
8
8
Circuit "B"
Breaker
Wire Gauge
Size
and Type
40 amp
#10 NM-B
60 amp
#10 NM-B
60 amp
#10 NM-B
60 amp
#6 SEU
60 amp
#6 SEU
50 amp
#8 NM-B
Low
Ground
Voltage
Wire
Thermostat
Size
Wire Size
10
2-Wire system
8
maximum wire
10
lengths:
10
24 Ga.= 55'
8
22 Ga.= 90'
10
20 Ga.= 140'
10
18 Ga.= 225'
8
10
4 or more
10
Wire systems
6
maximum wire
10
lengths:
10
24 Ga.= 25'
6
22 Ga.= 45'
10
20 Ga.= 70'
10
18 Ga= 110'
Low
Ground
Voltage
Wire
Thermostat
Size
Wire Size
10
2-Wire system
8
maximum wire
10
lengths:
10
24 Ga.= 55'
8
22 Ga.= 90'
10
20 Ga.= 140'
10
18 Ga.= 225'
4 or more
8
Wire systems
10
10
maximum wire
6
lengths:
10
24 Ga.= 25'
10
22 Ga.= 45'
8
Replacement
10
furnace for
10
E2E(*)-015HB
Breaker
Size
30 amp
30 amp
30 amp
60 amp
60 amp
40 amp
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