Omega Products NCRR-12-100 User Manual
Resistance Heating
Ribbon Wire
Nickel-Chromium Alloy
80% Nickel/20% Chromium
NCRR Series
Starts at
$
80
30 m (100') Spool
⻬ Uniformity of Resistance
⻬ Mechanical Stability
⻬ Fine Surface Finish
Resistance Wire–Current vs. Temperature
Current Carrying Capacity of Straight Nickel Chromium Wire
Approximate amperes to heat a straight, oxidized wire in quiet air to given temperature
°F 400 600 800 1000 1200 1400
°C 205 315 427 538 649 760
AWG or Inches
B & S Dia. Amperes
15 0.057 7.2 10.0 12.8 16.1 20.0 24.5
16 0.051 6.4 8.7 10.9 13.7 17.0 20.9
17 0.045 5.5 7.5 9.5 11.7 14.5 17.6
18 0.040 4.8 6.5 8.2 10.1 12.2 14.8
19 0.036 4.3 5.8 7.2 8.7 10.6 12.7
20 0.032 3.8 5.1 6.3 7.6 9.1 11.0
21 0.0285 3.3 4.3 5.3 6.5 7.8 9.4
22 0.0253 2.9 3.7 4.5 5.6 6.8 8.2
23 0.0226 2.58 3.3 4.0 4.9 5.9 7.0
24 0.0201 2.21 2.9 3.4 4.2 5.1 6.0
25 0.0179 1.92 2.52 3.0 3.6 4.3 5.2
26 0.0159 1.67 2.14 2.60 3.2 3.8 4.5
27 0.0142 1.44 1.84 2.25 2.73 3.3 3.9
28 0.0126 1.24 1.61 1.95 2.38 2.85 3.4
29 0.0113 1.08 1.41 1.73 2.10 2.51 2.95
30 0.0100 0.92 1.19 1.47 1.78 2.14 2.52
31 0.0089 0.77 1.03 1.28 1.54 1.84 2.17
32 0.0080 0.68 0.90 1.13 1.36 1.62 1.89
33 0.0071 0.59 0.79 0.97 1.17 1.40 1.62
34 0.0063 0.50 0.68 0.83 1.00 1.20 1.41
35 0.0056 0.43 0.57 0.72 0.87 1.03 1.21
36 0.0050 0.38 0.52 0.63 0.77 0.89 1.04
37 0.0045 0.35 0.46 0.57 0.68 0.78 0.90
38 0.0040 0.30 0.41 0.50 0.59 0.68 0.78
39 0.0035 0.27 0.36 0.42 0.49 0.58 0.66
40 0.0031 0.24 0.31 0.36 0.43 0.50 0.57
⻬ Nickel-Chromium Wire
(80Ni-20Cr) is Proven to
Deliver Outstanding
Performance Over
Extended Periods of
Time and is the Same
Wire OMEGA Uses in
Our Own Electrical
Heating Elements
H-17
100' spool of NCCR-15-100 $85,
shown smaller than actual size.
Current Carrying Capacity of Ribbon
Nickel Chromium Wire
At 648°C (1200°F) Approximate
Width-Inches
1
Thickness
in Inches Amps
0.0063 1.56 2.89 5.5 8.2 10.1 16.6
0.0056 1.45 2.69 5.2 7.2 9.5 15.6
0.0050 1.35 2.52 4.9 6.8 9.0 14.7
0.0045 1.26 2.38 4.6 6.4 8.5 14.0
0.0040 1.18 2.23 4.1 6.0 8.0 13.1
0.0035 1.09 2.07 3.8 5.6 7.5 12.3
0.0031 1.01 1.94 3.6 5.3 7.0 11.5
0.0020 ——————
0.0015 4—————
The current values above are based on actual tests
of single strands of oxidized wire mounted in quiet air
and operated at 648°C (1200°F). The tables are
calculated for wire having a resistivity at 648°C
(1200°F) and a total surface watts-density of 28 W per
square inch.
1
⁄64
1
⁄32
3
⁄16
⁄32
MOST POPULAR MODELS HIGHLIGHTED!
To Order (Specify Model Number)
Model No. Price Thickness Width Ω/ft
NCRR-1-100 $80 0.0015"
NCRR-2-100 80 0.002"
NCRR-3-100 80 0.0031"
NCRR-4-100 80 0.0035"
1
3
⁄8
⁄16
NCRR-5-100 80 0.004"
NCRR-6-100 80 0.0045"
NCRR-7-100 80 0.005"
NCRR-8-100 80 0.0056"
NCRR-9-100 80 0.0063"
NCRR-10-100 85 0.002"
NCRR-11-100 85 0.0031"
NCRR-12-100 85 0.0035"
NCRR-13-100 85 0.004"
NCRR-14-100 85 0.0045"
NCRR-15-100 85 0.005"
NCRR-16-100 85 0.0063"
NCRR-17-100 85 0.0031"
NCRR-18-100 85 0.0035"
NCRR-19-100 85 0.004"
NCRR-20-100 95 0.0045"
NCRR-21-100 95 0.005"
NCRR-22-100 95 0.0056"
NCRR-23-100 95 0.0063"
NCRR-25-100 95 0.0031"
NCRR-26-100 95 0.0035"
NCRR-27-100 95 0.0045"
NCRR-28-100 95 0.0063"
NCRR-29-100 95 0.0031"
NCRR-30-100 95 0.0035"
NCRR-31-100 100 0.004"
NCRR-32-100 100 0.0045"
NCRR-33-100 100 0.005"
NCRR-34-100 100 0.0056"
NCRR-35-100 100 0.0031"
NCRR-36-100 105 0.0035"
NCRR-37-100 105 0.004"
NCRR-38-100 105 0.0045"
NCRR-39-100 105 0.005"
Ordering Example: NCRR-15-100, 100' spool of 0.0035" thickness
of heating ribbon wire, $85.
H-18
1
⁄64" 22.75
1
⁄64" 17.36
1
⁄64" 11.20
1
⁄64" 9.99
1
⁄64" 8.68
1
⁄64" 7.12
1
⁄64" 6.95
1
⁄64" 6.20
1
⁄64" 5.51
1
⁄32" 9.83
1
⁄32" 5.60
1
⁄32" 4.96
1
⁄32" 4.34
1
⁄32" 3.86
1
⁄32" 3.47
1
⁄32" 2.76
1
⁄16" 3.17
1
⁄16" 2.81
1
⁄16" 2.46
1
⁄16" 1.93
1
⁄16" 1.74
1
⁄16" 1.55
1
⁄16" 1.38
3
⁄32" 2.11
3
⁄32" 1.87
3
⁄32" 1.46
3
⁄32" 0.91
1
⁄8" 1.59
1
⁄8" 1.40
1
⁄8" 1.23
1
⁄8" 1.09
1
⁄8" 0.98
1
⁄8" 0.88
3
⁄16" 0.88
3
⁄16" 0.78
3
⁄16" 0.68
3
⁄16" 0.60
3
⁄16" 0.54
H
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