BriskHeat Product Catalog - English 14th Edition RevD | Page 36

RWK / RWF / RWG
CABLE / WIRE
RWK / RWF / RWG
Getting Started
Ordering Information
When specifying resistance wire , it is important to consider all aspects of the application and of the wire . For example , if the application is on a conductive surface , wire type RWF should not be chosen . Also , if the application requires constant temperatures of 350 ° F ( 176 ° C ), then alloy K should not be chosen . Call your local distributor or BriskHeat ® for application assistance .
Part Number Guide
Resistance Wire Type : RWK- ( Polyimide Film Insulated ), RWF- ( Fiberglass Insulated ), RWG- ( Grounded )
Number of Strands : ( see below tables )
Alloy Type : ( see below tables )
Resistance per Foot : ( see below tables )
Optional Coating : T- ( PTFE ) [ RWF and RWG only ], Blank- ( None )
Spool Size : A- ( 500ft [ 152m ]), B- ( 1000ft [ 305m ])
Alloy Specifications
Alloy Gauge / Max Exposure
Ohms / FT / Type Strand Temperature
Strand
Composition
A
43
1650 ° F ( 899 ° C )
175.00
71.75 % Fe , 22 % Cr , 5.75 % Al , 0.5 % Cu
B
41
1650 ° F ( 899 ° C )
115.31
71.75 % Fe , 22 % Cr , 5.75 % Al , 0.5 % Cu
C
40
1650 ° F ( 899 ° C )
88.18
71.75 % Fe , 22 % Cr , 5.75 % Al , 0.5 % Cu
D
40
1650 ° F ( 899 ° C )
70.24
60 % Ni , 15 % Cr , 25 % Fe
E
39
1650 ° F ( 899 ° C )
55.10
60 % Ni , 15 % Cr , 25 % Fe
F
37
1650 ° F ( 899 ° C )
33.33
60 % Ni , 15 % Cr , 25 % Fe
G
37
1022 ° F ( 550 ° C )
14.52
55 % Cu , 45 % Ni
H
37
1000 ° F ( 538 ° C )
8.88
78 % Cu , 22 % Ni
I
37
797 ° F ( 425 ° C )
4.44
88 % Cu , 12 % Ni
K
36
300 ° F ( 149 ° C )
0.43
96 % Cu ( core ), 4 % Ni ( cladding )
Resistance Per Foot
RWG 18 C - 4.899 T A
Number of
Alloy Type
Strands
A
B
C
D
E
F
G
H
I
K
5
35.000
23.062
17.636
14.048
11.020
6.666
2.904
1.776
0.888
0.086
6
29.167
19.218
14.697
11.707
9.183
5.555
2.420
1.480
0.740
0.072
7
25.000
16.473
12.597
10.034
7.871
4.761
2.074
1.269
0.634
0.061
8
21.875
14.414
11.023
8.780
6.888
4.166
1.815
1.110
0.555
0.054
9
19.444
12.812
9.798
7.804
6.122
3.703
1.613
0.987
0.493
0.048
10
17.500
11.531
8.818
7.024
5.510
3.333
1.452
0.888
0.444
0.043
11
15.909
10.483
8.016
6.385
5.009
3.030
1.320
0.807
0.404
0.039
12
14.583
9.609
7.348
5.853
4.592
2.778
1.210
0.740
0.370
0.036
13
13.462
8.870
6.783
5.403
4.238
2.564
1.117
0.683
0.342
0.033
14
12.500
8.236
6.299
5.017
3.936
2.381
1.037
0.634
0.317
0.031
15
11.667
7.687
5.879
4.683
3.673
2.222
0.968
0.592
0.296
0.029
16
10.938
7.207
5.511
4.390
3.444
2.083
0.908
0.555
0.278
0.027
17
10.294
6.783
5.187
4.132
3.241
1.961
0.854
0.522
0.261
0.025
18
9.722
6.406
4.899
3.902
3.061
1.852
0.807
0.493
0.247
0.024
19
9.211
6.069
4.641
3.697
2.900
1.754
0.764
0.467
0.234
0.023
20
8.750
5.766
4.409
3.512
2.755
1.667
0.726
0.444
0.222
0.022
21
8.333
5.491
4.199
3.345
2.624
1.587
0.691
0.423
0.211
0.020
22
7.955
5.241
4.008
3.193
2.505
1.515
0.660
0.404
0.202
0.020
23
7.609
5.013
3.834
3.054
2.396
1.449
0.631
0.386
0.193
0.019
24
7.292
4.805
3.674
2.927
2.296
1.389
0.605
0.370
0.185
0.018
25
7.000
4.612
3.527
2.810
2.204
1.333
0.581
0.355
0.178
0.017
26
6.731
4.435
3.392
2.702
2.119
1.282
0.558
0.342
0.171
0.017
27
6.481
4.271
3.266
2.601
2.041
1.234
0.538
0.329
0.164
0.016
28
6.250
4.118
3.149
2.509
1.968
1.190
0.519
0.317
0.159
0.015
29
30
6.034
5.833
3.976
3.844
3.041
2.939
2.422
2.341
1.900
1.837
1.149
1.111
0.501
0.484
0.306
0.296
0.153
0.148
0.015
0.014
NOTE : Resistance tolerance is +/ - 8 %
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24
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