J6 and j16 wiring chart (cont.) – Hubbell Electric Heater Company J User Manual
Page 16
J6 and J16 Wiring Chart (cont.)
kW
Volt
Ph
Unit
Amp
Draw
Branch
Amp
Draw
Phase-
Phase
Resistance
(Ohms)
Min.
Feed
Breaker
or Fuse
Size
Internal
Power
Wire
Size
Element
Jumper
Wire
Size
Copper
Power Feed
Wire Size
Conduit
Size
Diagram
208
1
195.0
65.0
1.1
245
8
10
250
2"
6A
208
3
112.6
56.3
2.1
145
8
10
1/0
1¼"
12(NCB)
240
1
168.8
56.3
1.4
215
8
10
250
1½"
6A
240
3
97.4
48.7
2.8
125
10
12
1
1"
12(NCB)
380
3
60.8
60.8
7.1
80
8
10
3
1"
13(WT)
480
3
48.7
48.7
11.4
65
8
10
4
¾"
13(WT)
600
3
36.2
36.2
19.1
50
10
12
8
¾"
15
208
3
119.1
59.5
1.9
150
8
10
2/0
1¼"
12(NCB)
240
1
187.5
62.5
1.3
235
8
10
250
2"
6A
240
3
108.3
54.1
2.6
140
8
10
1/0
1¼"
12(NCB)
380
3
68.6
34.3
6.4
90
12
12
2
1"
12(WT)
480
3
54.1
54.1
10.2
70
8
10
4
¾"
13(WT)
600
3
42.2
42.2
16.4
55
10
12
6
¾"
15
208
3
149.9
74.9
1.6
190
6
8
3/0
1½"
12
240
3
129.9
65.0
2.1
165
8
10
2/0
1½"
12
380
3
80.0
40.0
5.3
100
10
12
1
1"
12(WT)
480
3
65.0
65.0
8.5
85
8
10
4
1"
13(WT)
600
3
54.3
54.3
12.8
70
8
10
4
1"
15
208
3
159.9
79.9
1.5
200
6
8
4/0
1½"
12
240
3
140.7
70.4
2.0
180
6
8
2/0
1½"
12
380
3
91.4
45.7
4.9
115
10
12
1
1"
12(WT)
480
3
70.4
35.2
7.9
90
12
12
3
1"
12(WT)
600
3
54.3
54.3
12.3
70
8
10
4
1"
15
64
208
3
178.6
59.5
1.4
225
8
10
4/0
1½"
17
66
600
3
63.4
63.4
10.9
80
8
10
4
¾"
18
240
3
162.4
54.1
1.7
205
8
10
4/0
1½"
17
380
3
102.8
34.3
4.2
130
12
12
1/0
1¼"
16(WT)
480
3
81.2
27.1
6.8
105
12
12
2
1"
16(WT)
79
380
3
120.0
40.0
3.7
150
10
12
2/0
1¼"
16(WT)
208
3
224.8
74.9
1.1
285
6
8
300
2"
17
240
3
194.9
65.0
1.4
245
8
10
250
2"
17
480
3
105.5
35.2
5.7
135
12
12
1
1"
16(WT)
85
600
3
81.5
81.5
8.5
105
6
8
2
1"
18
86
208
3
239.8
79.9
1.0
300
6
8
350
2"
17
240
3
211.1
70.4
1.3
265
6
8
300
2"
17
480
3
105.5
35.2
5.2
135
12
12
1/0
1¼"
16(WT)
90
380
3
137.1
45.7
3.2
175
10
12
2/0
1½"
16(CBWT)
88
58.5
40.5
45
54
68
81
J6 and J16 Wiring Chart Notes:
1. Power feed wire sizing is based on using 75°C Cu THHN wire with feeder branch
protection rated at 125%.
2. Internal wire sizing is based on using 200°C SEW-2 or PTFE wiring in a raceway
with an ambient temperature up to 60°C.
3. For information on 277V, 415V, or 440V models reference the supplied drawing
or contact the factory.
4. Normal phase-to-phase resistance tolerance is ±5%.
5. 380, 480, and 600-volt phase-to-phase resistance values are shown with the transformer
disconnected.
6. For 575V models, multiply the kW rating of the 600V model by a de-rating factor of 0.92
to get the actual rating for 575V.
7. For models manufactured prior to June 24, 2005, that utilize wiring diagrams 3, 5, 6,
7(NT), 7(WT), or 11 please contact the factory for wiring diagrams.
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