Chromalox CXH-A/B-03S Installation, Operation And Maintenance Instructions page 10
Hazardous location forced-air heater
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Table D – Electrical Ratings
Model
Volts
CXH-A/B-03
240
CXH-A/B-05
240
CXH-A/B-07
240
CXH-A/B-10
240
CXH-A/B-15
240
CXH-A/B-03
480
CXH-A/B-05
480
CXH-A/B-07
480
CXH-A/B-10
480
CXH-A/B-15
480
CXH-A/B-20
480
CXH-A/B-25
480
CXH-A/B-30
480
CXH-A/B-35
480
CXH-A/B-03
600
CXH-A/B-05
600
CXH-A/B-07
600
CXH-A/B-10
600
CXH-A/B-15
600
CXH-A/B-20
600
CXH-A/B-25
600
CXH-A/B-30
600
CXH-A/B-35
600
Total Current
kW
Phase
(Amps)
3
3
8.0
5
3
12.8
7.5
3
17.6
10
3
24.8
15
3
36.9
3
3
4.0
5
3
6.4
7.5
3
8.8
10
3
12.4
15
3
18.5
20
3
24.5
25
3
30.9
30
3
36.9
35
3
42.9
3
3
3.2
5
3
5.6
7.5
3
7.5
10
3
10.4
15
3
15.2
20
3
20.0
25
3
24.7
30
3
29.6
35
3
34.4
Minimum
Supply Wire
Circuit
(AWG)
Amps
(90˚C Ambient)
10.0
14
16.0
14
22.0
12
31.0
8
46.2
6
5.0
14
8.0
14
11.0
14
15.5
14
23.2
10
30.7
8
38.7
8
46.2
6
53.7
4
4.0
14
7.0
14
9.4
14
13.0
14
19.0
14
25.0
12
30.9
8
37.0
8
43.0
6
10
Max. Fuse/
Breaker size
(Amps)
Wiring Diagram
15
I
20
I
25
I
35
I
50
I
I
15
I
15
15
I
I
20
I
30
I
35
I
40
I
50
I
60
I
15
I
15
I
15
I
15
I
20
I
25
I
35
I
40
I
50
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