Car Batteries: 1200 watt 100 Amps
12v =.12Ω
24v = 2.4Ω
48v = .48Ω
18 gauge nichrome wire ohms per foot=.040 / 3feet for .12 ohms.
Sources Toasters and other radiant heaters Better Hardware Stores
To be completely accurate you have to monitor the temp of the wire or do wattage calc and
extract the current and do the wattage calculation. Voltage x Current= Wattage.
| Gauge (AWG) | Average Wire
Diameter (in.) | Feet per Pound | Resistance
(ohms/ft. @ 68°F) | | Nichrome 60 | Nichrome 80 | Nichrome 60 | Nichrome 80 | | 16 | 0.0508 | 138.9 | 135 | 0.259 | 0.2519 | | 18 | 0.04 | 222.6 | 215 | 0.4219 | 0.4002 | | 20 | 0.032 | 347.8 | 641 | 0.6592 | 0.6348 | | 22 | 0.0253 | 556.5 | 546 | 1.055 | 1.6089 | | 24 | 0.0201 | 881.8 | 865 | 1.671 | 1.0155 | | 26 | 0.0159 | 1413 | 1383 | 2.67 | 2.5711 | | 28 | 0.0126 | 2257 | 2202 | 4.21 | 4.0942 | | 30 | 0.01 | 3584 | 3496 | 6.68 | 6.5 | | 32 | 0.008 | 5565 | 5463 | 10.55 | 10.1563 | | 33 | 0.0071 | 7092 | 6936 | 13.2 | 12.8943 | | 34 | 0.0063 | 9009 | 8809 | 16.8 | 16.3769 | | 36 | 0.005 | 14347 | 13986 | 26.7 | 26 |
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