So, if you need, for example, AWG 5 cable, but you are offered cables in millimeters only, you should buy cable 4.62mm in diameter (with 16.77 mm2 cross section area), or next thicker cable. Even so, such cables can get very warm, even hot, if trolling motor is pushed to the limit and cable is NOT dimensioned accordingly.Bow and stern thrusters usually tolerate larger voltage drops (although, these losses should be avoided, if possible), but they usually operate for shorter period of time, when compared with electric trolling motors. Trolling motors usually have shorter cables. Please read Google Privacy & Terms for more information about how you can control adserving and the information collected. Again, these are calculated values for 10m (33 feet) wire - 2x5m (2x16 feet) cable. AWG to mm2 Conversion Calculator and Chart, LR44, AG13, LR1154, SR44, 303, 357 Batteries - Equivalent Batteries, Cross Reference and Replacements, Best 100 Ah AGM Deep Cycle Marine Battery, Optima D34M, D27M, D31M BlueTop Dual Purpose Marine Batteries, Exide MC-31 and XMC-31 MEGACYCLE AGM-200 Sealed Maintenance Free (AGM) Marine Batteries, The Best 800-1000+ Cold Cranking Amps (CCA) AGM Marine Battery, Exide Edge FP-AGM24DP Flat Plate AGM Sealed Dual Purpose Marine Battery, Briggs & Stratton P2200 PowerSmart Series Inverter Generator, How Long Will a 12V Deep Cycle Battery Last With an Inverter, Boat, RV, Camping and Home Appliances Wattage Chart, Honda EU2200i and EU2200iC Quiet Portable Inverter Generators, 2CR5, 5032LC, EL2CR5, DL245 Batteries - Dimensions, Equivalents, and Replacements, NOCO Genius Waterproof Smart On-Board Battery Chargers, VMAXTANKS 12V Smart AGM, Gel Cell and Flooded Lead-Acid Battery Chargers, Schumacher SSC-1000A Ship 'N' Shore SpeedCharge 2/6/10 Amp Battery Charger and Maintainer, Odyssey 31M-PC2150 Marine Dual Purpose Battery, Battery Tender 12V Lithium Iron Phosphate Batteries, Optima RedTop, YellowTop, BlueTop Batteries - Comparison and Recommendation, VMAXTANKS Batteries V30-800, V35-857, MR96, MR107, SLR125, MR137, SLR155 and MR197 Comparison.
Change Cookie Consent - Area in2: cross section area of the cable, given in inch2. With various standards around, it is important to know how to convert proper cable sizes from one standard to another.

Conductor nominal cross-sectional area (mm 2) Maximum resistance of copper conductors at 20°C (Ω/km) 1.5 24.2 2.5 14.82 4 9.22 6 6.16 10 3.66 16 2.30 25 1.454 35 1.048 50 0.774 70 0.536 95 0.386 120 0.306 150 Generally at these sizes a cable cpc is not used.

If you double the length of the cable, you should use cable that has half the resistance to keep voltage and power losses at the same level. AWG mm2 20 0.5 18 0.75 17 1 16 1.5 14 2.5 12 4 10 6 8 10 6 16 4 25 2 35 1 50 1/0 55 2/0 70 3/0 95 4/0 120 Recommended Reading: Basic Electrical […] Also, voltage drop and power losses depend on the cable length, thickness and current flowing through the cable.

- Voltage and Power Loss, I=60A, 10m (2x5) Wire: electric trolling motors usually have maximum current in 50-55A range and have 60A circuit breaker recommended for protection.

Pure copper cable has resistivity coefficient of 1.68x10-8 Ωm at 20°C/68°F and temperature coefficient of 0.003862 K-1, but copper in wires/cables is not always 100% copper. By using our website, you agree that we can place these types of cookies on your device.

If there is need for more power, current is kept below 60A and voltage is increased from 12V to 24, 36 or even more volts. You can target the Engineering ToolBox by using AdWords Managed Placements. This website uses cookies to manage authentication, navigation, and other functions. If used, AWG 12-18 cables should be used for LED lights only. Some of our calculators and applications let you save application data to your local computer.

- Diameter mm: diameter of cable, given in millimeters. Keep in mind that trolling motors usually have shorter cables and they usually tolerate 5% voltage drop on cables. Remember, this is 10m wire or 5m cable with two wires. Resistivity of copper is 1.68 Ωm at 20°C. We don't collect information from our users. Internal resistance of the batteries changes with many factors and it would complicate calculations even further :). - Power Loss @U 5% Drop, 10m (2x5m) Wire: this is power loss in the cable when there is 5% voltage drop.
Google use cookies for serving our ads and handling visitor statistics. Not a problem for a really thick cables.

Electrical resistance in single core conductors: values are based on electrical resistivity for copper 1.724 x 10-8 Ω m (0.0174 μΩ m) and electrical resistivity for aluminum 2.65 x 10-8 Ω m (0.0265 μΩ m) AWG, diameter mil, circular mil, diameter in mm and area in mm 2 Resistivity of copper is 1.68 Ωm at 20°C. This is a handy rule to remember when making rough wire size estimations! Reconsider Cookies Add standard and customized parametric components - like flange beams, lumbers, piping, stairs and more - to your Sketchup model with the Engineering ToolBox - SketchUp Extension - enabled for use with the amazing, fun and free SketchUp Make and SketchUp Pro .Add the Engineering ToolBox extension to your SketchUp from the SketchUp Pro Sketchup Extension Warehouse!

Engineering ToolBox - Resources, Tools and Basic Information for Engineering and Design of Technical Applications! Table 4.2 Values of R 1 + R 2 for cables using wire for cpc at 20°C. Long story short - don't go cheap on wires and cables. In this table, data are provided for pure copper wire at 20°C/68°F - 1.68x10-8 Ωm and 0.003862 K-1.

- Resistance Ω per m, Copper, t=20°C/68°F: this is resistance of ideal copper cable (of corresponding thickness), 1m in length, at 20°C/68°F.

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