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TABLE 1.
RUW, T
RUW, T
18
16
14
12
10
8
......
......
15
20
30
40
......
......
15
20
30
45
......
22
25
30
40
50
21
22
25
30
40
50
......
......
......
15
25
30
......
......
......
15
25
40
......
......
......
25
30
40
......
......
......
25
30
40
......
......
......
12
10
8
6
4
3
2
1
55
70
80
65
85
100
115
130
70
90
105
120
140
70
90
105
120
140
40
55
65
75
50
65
75
90
100
55
70
80
95
110
55
70
80
95
110
6
4
3
2
1
0
00
000
0000
150
175
200
230
155
185
210
235
155
185
210
235
120
135
155
180
125
145
165
185
125
145
165
185
0
00
000
0000
250
300
350
400
500
255
285
310
335
380
270
300
325
360
405
270
300
325
360
405
205
230
250
270
310
215
240
260
290
330
215
240
260
290
330
250
300
350
400
500
Temperature
31-40
41-50
51-60
61-70
71-80
allowable load current.
Temperature
.82
.58
......
......
......
.88
.75
.58
.35
......
.90
.80
.67
.52
.30
.91
.82
.71
.58
.41
.82
.58
......
......
......
.88
.75
.58
.35
......
.90
.80
.67
.52
.30
.91
.82
.71
.58
.41
86 –104
105–122
123–141
142–158
159–176
TABLE 2.
STANDARD KW INPUTS
Standard
KW
Ratings
Immersion
Heaters***
Number of 50A Contractors
Full Load Current In Amperes
Single Phase Three Phase
No. Of
Wattage
208V 240V 480V 208V 240V 277V 480V 208V 240V 480V
3
6
9
12
15
1 3,000
1 6,000
1 9,000
1 12,000
1 15,000
1
1
1
14.4
28.8
43.3
57.7
72.1
86.5
115.4
144.2
173.1
216.3
12.5
25.0
37.5
50.0
62.5
75.0
100.0
125.0
150.0
187.5
225.0
250.0
10.8
21.2
32.5
43.3
54.2
65.0
86.6
108.3
130.0
162.5
194.9
216.6
6.3
12.5
18.8
25.0
31.3
37.5
50.0
62.5
75.0
93.8
112.5
125
156
188
8.3
16.7
25.0
33.3
41.6
50.0
66.6
83.3
99.9
124.9
149.9
166.7
208.4
250
7.2
14.4
21.7
28.9
36.1
43.3
57.7
72.2
86.6
108.3
129.9
145
181
217
3.6
7.2
10.8
14.4
18.0
21.7
28.9
36.1
43.3
54.1
65.0
72
90
108
24
30
1 18,000
2 12,000
2 15,000
2
2
45
54
2 18,000
3 15,000
3 18,000
3 3
2
4 15,000 4 4
5 18,000
5 5 3
5 18,000