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Model
Supply
Number
Circuit
E3E(*)
-010-H
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
-023H
Dual "A"
Dual "B"
Model
Supply
Number
Circuit
(E3EX)
Single
-010
Single
-012
Dual "A"
Dual "B"
Single
-015
Dual "A"
Dual "B"
Single
-017
Dual "A"
Dual "B"
Single
-020
Dual "A"
Dual "B"
Replacement furnace for E2E(*)-015HB
E2E(*)-
Single
015HBR
Dual "A"
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 fixed 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
Amperes
Rating
Ampacity
45.5
60
57
52.1
70
65
28.0
40
35
24.2
30
30
66.3
90
83
45.5
60
56
20.8
30
26
71.3
90
89
48.8
60
60
22.5
30
28
87.1
125
109
45.5
60
57
41.7
60
52
93.8
125
117
52.1
60
60
41.7
60
56
Minimum
Maximum
Total
Circuit
Over-current
Amperes
Ampacity
Rating
47.7
60
57
54.3
70
67
30.2
40
35
24.2
30
30
66.0
90
83
46.0
60
57
20.0
30
25
71.5
90
89
51.0
60
60
22.5
30
28
86.0
125
109
46.0
60
57
40.0
60
50
67.1
90
83
35.5
50
44
31.7
40
39
Table 9a. Electrical Specifications
Circuit "A"
Wire Gauge
Breaker
and Type
Size
#8 NM-B
40 amp
#6 SEU
60 amp
#6 SEU
60 amp
#6 SEU
60 amp
#6 SEU
60 amp
#8 SEU
50 amp
for Dual Circuit Installations**
Copper Wire Size - See
Ground
Caution Below
Wire
60°C
90°C
Size
( e.g ., R o mex)
( e. g . , SEU )
4
6
10
4
6
8
8
8
10
10
10
10
2
4
8
4
6
10
10
10
10
2
4
8
4
6
10
10
10
10
0
2
6
4
6
10
4
6
10
0
2
6
4
6
10
4
6
10
Copper Wire Size - See
Ground
Caution Below
Wire
60°C
90°C
Size
( e.g ., R o mex)
( e. g . , SEU )
4
6
10
4
6
8
8
8
10
10
10
10
2
4
8
4
6
10
10
10
10
2
4
8
4
6
10
10
10
10
0
2
6
4
6
10
4
6
10
2
4
8
6
8
10
8
8
10
Circuit "B"
Wire Gauge and
Breaker Size
Type
#10 NM-B
30 amp
#10 NM-B
30 amp
#10 NM-B
30 amp
#6 SEU
60 amp
#6 SEU
60 amp
#8 NM-B
40 amp
Low
Voltage
Thermostat
Wire Size
2-Wire
system
maximum
wire lengths:
24 Ga.= 55'
22 Ga.= 90'
20 Ga.= 140'
18 Ga.= 225'
4 or more
Wire
systems
maximum
wire lengths:
24 Ga.= 25'
22 Ga.= 45'
20 Ga.= 70'
18 Ga= 110'
Low
Voltage
Thermostat
Wire Size
2-Wire system
maximum wire
lengths:
24 Ga.= 55'
22 Ga.= 90'
20 Ga.= 1 40'
1 8 Ga.= 225'
4 or mo re
Wire systems
maximum wire
lengths:
24 Ga.= 25'
22 Ga.= 45'
20 Ga.= 70'
1 8 Ga= 1 1 0'
Replacement
furnace fo r
E2E(*)-01 5HB
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