Nordyne E3 Series User Manual
Page 22
22
* 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.
Table 9a. Electrical Specifi cations
** Alternate wiring combinations can be used. Refer to the latest revision of the NEC for these
appropriate alternate combinations.
Table 9b. Recommended Electrical Application Guide
for Dual Circuit Installations**
Model
Number
E3E(*)
Supply
Circuit
Total
Amperes
Maximum
Over-current
Rating
Minimum
Circuit
Ampacity
Copper Wire Size - See
Caution Below
Ground
Wire
Size
Low
Voltage
Thermostat
Wire Size
60°C
(e.g., Romex)
90°C
(e.g., SEU)
-010H
Single
45.5
60
57
4
6
10
2-Wire system
maximum wire
lengths:
24 Ga.= 55'
22 Ga.= 90'
20 Ga.= 140'
18 Ga.= 225'
-012H
Single
52.1
70
65
4
6
8
Dual "A"
28.0
40
35
8
8
10
Dual "B"
24.2
30
30
10
10
10
-015H
Single
66.3
90
83
2
4
8
Dual "A"
45.5
60
56
4
6
10
Dual "B"
20.8
30
26
10
10
10
-017H
Single
71.3
90
89
2
4
8
Dual "A"
48.8
60
60
4
6
10
4 or more
Wire systems
maximum wire
lengths:
24 Ga.= 25'
22 Ga.= 45'
20 Ga.= 70'
18 Ga= 110'
Dual "B"
22.5
30
28
10
10
10
-020H
Single
87.1
125
109
0
2
6
Dual "A"
45.5
60
57
4
6
10
Dual "B"
41.7
60
52
4
6
10
-023H
Single
93.8
125
117
0
2
6
Dual "A"
52.1
60
60
4
6
10
Dual "B"
41.7
60
56
4
6
10
Model
Number
E3EX
Supply
Circuit
Total
Amperes
Maximum
Over-current
Rating
Minimum
Circuit
Ampacity
Copper Wire Size - See
Caution Below
Ground
Wire
Size
Low
Voltage
Thermostat
Wire Size
60°C
(e.g., Romex)
90°C
(e.g., SEU)
-010
Single
47.7
60
57
4
6
10
2-Wire system
maximum wire
lengths:
24 Ga.= 55'
22 Ga.= 90'
20 Ga.= 140'
18 Ga.= 225'
-012
Single
54.3
70
67
4
6
8
Dual "A"
30.2
40
35
8
8
10
Dual "B"
24.2
30
30
10
10
10
-015
Single
66.0
90
83
2
4
8
Dual "A"
46.0
60
57
4
6
10
Dual "B"
20.0
30
25
10
10
10
-017
Single
71.5
90
89
2
4
8
4 or more
Wire systems
maximum wire
lengths:
24 Ga.= 25'
22 Ga.= 45'
Dual "A"
51.0
60
60
4
6
10
Dual "B"
22.5
30
28
10
10
10
-020
Single
86.0
125
109
0
2
6
Dual "A"
46.0
60
57
4
6
10
Dual "B"
40.0
60
50
4
6
10
Replacement furnace for E2E(*)-015HB
E2E(*)-
015HBR
Single
67.1
90
83
2
4
8
Replacement
furnace for
E2E(*)-015HB
Dual "A"
35.5
50
44
6
8
10
Dual "B"
31.7
40
39
8
8
10
Circuit "A"
Circuit "B"
Model Number
E3E(*)
Wire Gauge
and Type
Breaker
Size
Wire Gauge
and Type
Breaker
Size
-012H
#8 NM-B
40 amp
#10 NM-B
30 amp
-015H
#6 SEU
60 amp
#10 NM-B
30 amp
-017H
#6 SEU
60 amp
#10 NM-B
30 amp
-020H
#6 SEU
60 amp
#6 SEU
60 amp
-023H
#6 SEU
60 amp
#6 SEU
60 amp
Replacement furnace for E2E(*)-015HB
E2E(*)-015HBR
#8 SEU
50 amp
#8 NM-B
40 amp