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Model
Supply
Number
Circuit
E2E(*)
-010-HB
Single
Single
-012-HB
Dual "A"
Dual "B"
Single
-015-HB
Dual "A"
Dual "B"
Single
-015-HR
Dual "A"
Dual "B"
Single
-017-HB
Dual "A"
Dual "B"
Single
-020-HB
Dual "A"
Dual "B"
Single
-023-HB
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
E2E(*)
-12-HB
-15-HB
-15-HR
-17-HB
-20-HB
-23-HB
Table 6b. Recommended Electrical Application Guide for Dual Circuit Installations**
**Alternate wiring combinations can be used. Refer to the latest revision of the NEC for
these appropriate alternate combinations.
20
Maximum
Minimum
Total
Over-current
Amperes
Rating
Ampacity
45.5
60
52.1
70
28.0
40
24.2
30
66.3
90
35.1
50
31.3
40
71.3
90
48.0
60
22.5
30
71.3
90
48.0
60
22.5
30
87.1
125
45.5
60
41.7
60
93.8
125
48.0
60
45.5
60
Table 6a. Electrical Specifications
Circuit "A"
Wire Gauge
and Type
Breaker Size
#8 NM-B
40 amp
#8 SEU
50 amp
#6 SEU
60 amp
#6 SEU
60 amp
#6 SEU
60 amp
#6 SEU
60 amp
Copper Wire Size - See
Caution Below
Circuit
60°C
90°C
( e. g . , R o mex)
( e. g . , SEU )
57
4
6
65
4
6
35
8
8
30
10
10
83
2
4
44
6
8
39
8
8
89
2
4
60
4
6
28
10
10
89
2
4
60
4
6
28
10
10
109
0
2
57
4
6
52
4
6
117
0
2
60
4
6
56
4
6
Circuit "B"
Wire Gauge
and Type
#10 NM-B
#8 NM-B
#10 NM-B
#10 NM-B
#6 SEU
#6 SEU
Low
Ground
Voltage
Wire
Thermostat
Size
Wire Size
10
8
10
2-Wire
10
system
maximum
8
wire lengths:
10
24 Ga.= 55'
10
22 Ga.= 90'
20 Ga.= 140'
8
18 Ga.= 225'
10
10
4 or more
8
Wire
10
systems
10
maximum
wire lengths:
6
24 Ga.= 25'
10
22 Ga.= 45'
20 Ga.= 70'
10
18 Ga= 110'
6
10
10
Breaker Size
30 amp
40 amp
30 amp
30 amp
60 amp
60 amp
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