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TechGuy | 06-23-2009 07:10 PM
Practical Limits to DC length Anyone have a chart handy of wire size/voltage vs distance for DC? I was looking at running some DC fans in the chicken coupe. Need to run about 300 ft. looking to see what is cheaper. Figured I could staple the 12v cable to the fence line. (really don't want to kill a neighbor with 120v ac.

thrifty_bob | 06-23-2009 07:15 PM
Re: Practical Limits to DC length Solar chimney Easy and cheap

Golddust | 06-23-2009 07:19 PM
Re: Practical Limits to DC length Quote:
Originally Posted by TechGuy (Post 1783402) Anyone have a chart handy of wire size/voltage vs distance for DC? I was looking at running some DC fans in the chicken coupe. Need to run about 300 ft. looking to see what is cheaper. Figured I could staple the 12v cable to the fence line. (really don't want to kill a neighbor with 120v ac.
<table style="border-collapse: collapse;" width="100%" border="0" cellpadding="3" cellspacing="0"><tbody><tr><td width="50%" align="center"> http://www.windsun.com/logos/W_400pxl.jpg</td> <td width="50%" align="center"> DC Wire Table </td> </tr> </tbody> </table> Wire Loss Tables for Solar Electric Systems Includes 12, 24, and 120 volt charts and a Metric to AWG size conversion table. This is a five percent table which means at these amperage ratings at the listed distances, 5% of the power would be lost to resistance. Five percent is normally acceptable in low voltage systems, but if you want a 2% figure, divide the given distances by 2.5. For a 10% loss multiply the distance by 2. For distances at 48 volts, double the 24 volt distances for a 5 percent loss figure. For 240 volt 5% loss, double the 120 volt distances. These distances include the NEC requirement for current over sizing of 25%. Example: For a pump drawing 9 amperes at 24 volts, located 88 feet from the battery bank: look at the center table for 24 volts. In the far left column find the next number higher than 9 (which is 10) and follow that line across the table until you find a distance figure greater than 88. At the top of the column find the gauge of wire (#8) that should be used. This method insures that wire losses are kept to an acceptable level without spending too much money on extra-heavy cable. Using a heavier wire than indicated, however, will result in even higher efficiencies and we do sometimes invest in the next larger gauge. Wire can get expensive, and it may not be worth the money to get that last 1% if you have to go to a much larger wire size. <hr> Some of the newer grid tie systems inverters, such as the Sunny Boy, use up to 600 volts DC. Generally in these systems loss in wire is nothing to worry about. HOWEVER - you will have to be more careful about selecting and installing the wiring - high voltage DC is not something you want to do a 2nd rate wiring job on. Make sure the insulation is rated for 600 volts, and that there is no damage to the wire or insulation. We have also included a wire chart for converting Metric to AWG (American Wire gauge) sizes. All distances are in FEET Do not use any wire sizes that might fall into the red zone - this would exceed the amperage rating of the wire and it may overheat and burn. <hr> 120 Volt AC or DC chart <table width="100%" border="1" cellpadding="2" cellspacing="0"> <tbody> <tr> <td style="height: 28px;" width="8%" align="center" bgcolor="#008080"> Amps in Wire</td> <td style="height: 28px;" width="8%" align="center" bgcolor="#008080"> Watts at 120V</td> <td style="height: 28px;" width="8%" align="center" bgcolor="#008080"> #14</td> <td style="height: 28px;" width="8%" align="center" bgcolor="#008080"> #12</td> <td style="height: 28px;" width="9%" align="center" bgcolor="#008080"> #10</td> <td style="height: 28px;" width="9%" align="center" bgcolor="#008080"> #8</td> <td style="height: 28px;" width="9%" align="center" bgcolor="#008080"> #6</td> <td style="height: 28px;" width="9%" align="center" bgcolor="#008080"> #4</td> <td style="height: 28px;" width="9%" align="center" bgcolor="#008080"> #2</td> <td style="height: 28px;" width="9%" align="center" bgcolor="#008080"> 1/0</td> <td style="height: 28px;" width="9%" align="center" bgcolor="#008080"> 2/0</td> <td style="height: 28px;" width="9%" align="center" bgcolor="#008080"> 3/0</td> </tr> <tr> <td>2</td> <td>240</td> <td>422</td> <td>656</td> <td colspan="8"> </td> </tr> <tr> <td>4</td> <td>480</td> <td>187</td> <td>328</td> <td>516</td> <td colspan="7"> </td> </tr> <tr> <td>6</td> <td>720</td> <td>141</td> <td>225</td> <td>328</td> <td>562</td> <td colspan="6"> </td> </tr> <tr> <td>8</td> <td>960</td> <td>103</td> <td>159</td> <td>272</td> <td>422</td> <td>666</td> <td colspan="5"> </td> </tr> <tr> <td>10</td> <td>1200</td> <td>84</td> <td>131</td> <td>216</td> <td>337</td> <td>534</td> <td colspan="5"> </td> </tr> <tr> <td>15</td> <td>1800</td> <td>56</td> <td>84</td> <td>131</td> <td>225</td> <td>356</td> <td>562</td> <td colspan="4"> </td> </tr> <tr> <td style="width: 8%;">20</td> <td style="width: 8%;">2400</td> <td style="width: 8%;" class="style2"> </td> <td style="width: 8%;">65</td> <td style="width: 9%;">103</td> <td style="width: 9%;">1-8</td> <td style="width: 9%;">272</td> <td style="width: 9%;">422</td> <td style="width: 9%;">675</td> <td colspan="3"> </td> </tr> <tr> <td style="width: 8%;">25</td> <td style="width: 8%;">3000</td> <td style="width: 8%;" class="style2"> </td> <td style="width: 8%;" class="style2"> </td> <td style="width: 9%;">84</td> <td style="width: 9%;">131</td> <td style="width: 9%;">216</td> <td style="width: 9%;">337</td> <td style="width: 9%;">543</td> <td colspan="3"> </td> </tr> <tr> <td style="width: 8%;">30</td> <td style="width: 8%;">3600</td> <td style="width: 8%;" class="style2"> </td> <td style="width: 8%;" class="style2"> </td> <td style="width: 9%;">65.63</td> <td style="width: 9%;">112</td> <td style="width: 9%;">178</td> <td style="width: 9%;">281</td> <td style="width: 9%;">450</td> <td style="width: 9%;">722</td> <td colspan="2"> </td> </tr> <tr> <td style="width: 8%;">40</td> <td style="width: 8%;">4800</td> <td style="width: 8%;" class="style2"> </td> <td style="width: 8%;" class="style2"> </td> <td style="width: 9%;" class="style2"> </td> <td style="width: 9%;">84</td> <td style="width: 9%;">131</td> <td style="width: 9%;">216</td> <td style="width: 9%;">337</td> <td style="width: 9%;">543</td> <td style="width: 9%;">675</td> <td style="width: 9%;"> </td> </tr> <tr> <td style="width: 8%;">50</td> <td style="width: 8%;">6000</td> <td style="width: 8%;" class="style2"> </td> <td style="width: 8%;" class="style2"> </td> <td style="width: 9%;" class="style2"> </td> <td style="width: 9%;">67</td> <td style="width: 9%;">103</td> <td style="width: 9%;">171</td> <td style="width: 9%;">272</td> <td style="width: 9%;">431</td> <td style="width: 9%;">543</td> <td style="width: 9%;">684</td> </tr> </tbody> </table> <hr> 24 Volt DC chart <table width="100%" border="1" cellpadding="2" cellspacing="0"> <tbody> <tr> <td align="center" bgcolor="#008080" height="28">Amps in Wire</td> <td align="center" bgcolor="#008080" height="28">Watts at 24V</td> <td align="center" bgcolor="#008080" height="28">#14</td> <td align="center" bgcolor="#008080" height="28">#12</td> <td align="center" bgcolor="#008080" height="28">#10</td> <td align="center" bgcolor="#008080" height="28">#8</td> <td align="center" bgcolor="#008080" height="28">#6</td> <td align="center" bgcolor="#008080" height="28">#4</td> <td align="center" bgcolor="#008080" height="28">#2</td> <td align="center" bgcolor="#008080" height="28">1/0</td> <td align="center" bgcolor="#008080" height="28">2/0</td> <td align="center" bgcolor="#008080" height="28">3/0</td> </tr> <tr> <td>1</td> <td>24</td> <td>169</td> <td>262</td> <td>412</td> <td>675</td> <td colspan="6"> </td> </tr> <tr> <td>2</td> <td>48</td> <td>84</td> <td>131</td> <td>207</td> <td>337</td> <td>532</td> <td colspan="5" rowspan="2"> </td> </tr> <tr> <td>4</td> <td>96</td> <td>37</td> <td>66</td> <td>103</td> <td>169</td> <td>267</td> </tr> <tr> <td>6</td> <td>144</td> <td>28</td> <td>45</td> <td>66</td> <td>112</td> <td>178</td> <td>282</td> <td colspan="4" rowspan="2"> </td> </tr> <tr> <td>8</td> <td>192</td> <td>21</td> <td>32</td> <td>54</td> <td>84</td> <td>133</td> <td>216</td> </tr> <tr> <td>10</td> <td>240</td> <td>17</td> <td>26</td> <td>43</td> <td>67</td> <td>107</td> <td>169</td> <td>270</td> <td> </td> <td> </td> <td> </td> </tr> <tr> <td>15</td> <td>360</td> <td>11</td> <td>17</td> <td>26</td> <td>45</td> <td>71</td> <td>112</td> <td>180</td> <td>289</td> <td> </td> <td> </td> </tr> <tr> <td valign="top" width="8%">20</td> <td valign="top" width="8%">480</td> <td valign="top" width="8%" bgcolor="#ff0000"> </td> <td valign="top" width="8%">13</td> <td valign="top" width="8%">21</td> <td valign="top" width="8%">37</td> <td valign="top" width="8%">54</td> <td valign="top" width="8%">84</td> <td valign="top" width="9%">135</td> <td valign="top" width="9%">217</td> <td valign="top" width="9%">270</td> <td valign="top" width="9%">343</td> </tr> <tr> <td valign="top" width="8%" bgcolor="#ffffff">25</td> <td valign="top" width="8%" bgcolor="#ffffff">600</td> <td valign="top" width="8%" bgcolor="#ff0000"> </td> <td valign="top" width="8%" bgcolor="#ff0000"> </td> <td valign="top" width="8%" bgcolor="#ffffff">17</td> <td valign="top" width="8%" bgcolor="#ffffff">26</td> <td valign="top" width="8%" bgcolor="#ffffff">43</td> <td valign="top" width="8%" bgcolor="#ffffff">67</td> <td valign="top" width="9%" bgcolor="#ffffff">108</td> <td valign="top" width="9%" bgcolor="#ffffff">172</td> <td valign="top" width="9%" bgcolor="#ffffff">217</td> <td valign="top" width="9%" bgcolor="#ffffff">274</td> </tr> <tr> <td valign="top" width="8%" bgcolor="#ffffff">30</td> <td valign="top" width="8%" bgcolor="#ffffff">720</td> <td valign="top" width="8%" bgcolor="#ff0000"> </td> <td valign="top" width="8%" bgcolor="#ff0000"> </td> <td valign="top" width="8%" bgcolor="#ffffff">13</td> <td valign="top" width="8%" bgcolor="#ffffff">22</td> <td valign="top" width="8%" bgcolor="#ffffff">36</td> <td valign="top" width="8%" bgcolor="#ffffff">56</td> <td valign="top" width="9%" bgcolor="#ffffff">90</td> <td valign="top" width="9%" bgcolor="#ffffff">144</td> <td valign="top" width="9%" bgcolor="#ffffff">180</td> <td valign="top" width="9%" bgcolor="#ffffff">228</td> </tr> <tr> <td valign="top" width="8%">40</td> <td valign="top" width="8%">960</td> <td valign="top" width="8%" bgcolor="#ff0000"> </td> <td valign="top" width="8%" bgcolor="#ff0000"> </td> <td valign="top" width="8%" bgcolor="#ff0000"> </td> <td valign="top" width="8%">17</td> <td valign="top" width="8%">26</td> <td valign="top" width="8%">43</td> <td valign="top" width="9%">67</td> <td valign="top" width="9%">108</td> <td valign="top" width="9%">135</td> <td valign="top" width="9%">171</td> </tr> <tr> <td valign="top" width="8%">50</td> <td valign="top" width="8%">1200</td> <td valign="top" width="8%" bgcolor="#ff0000"> </td> <td valign="top" width="8%" bgcolor="#ff0000"> </td> <td valign="top" width="8%" bgcolor="#ff0000"> </td> <td valign="top" width="8%">13</td> <td valign="top" width="8%">21</td> <td valign="top" width="8%">34</td> <td valign="top" width="9%">54</td> <td valign="top" width="9%">86</td> <td valign="top" width="9%">108</td> <td valign="top" width="9%">137</td> </tr> </tbody> </table> <hr> 12 Volt DC chart <table width="100%" border="1" cellpadding="2" cellspacing="0"> <tbody> <tr> <td align="center" bgcolor="#008080" height="28">Amps in Wire</td> <td align="center" bgcolor="#008080" height="28">Watts at 12V</td> <td align="center" bgcolor="#008080" height="28">#14</td> <td align="center" bgcolor="#008080" height="28">#12</td> <td align="center" bgcolor="#008080" height="28">#10</td> <td align="center" bgcolor="#008080" height="28">#8</td> <td align="center" bgcolor="#008080" height="28">#6</td> <td align="center" bgcolor="#008080" height="28">#4</td> <td align="center" bgcolor="#008080" height="28">#2</td> <td align="center" bgcolor="#008080" height="28">1/0</td> <td align="center" bgcolor="#008080" height="28">2/0</td> <td align="center" bgcolor="#008080" height="28">3/0</td> </tr> <tr> <td>1</td> <td>12</td> <td>84</td> <td>131</td> <td>206</td> <td>337</td> <td>532</td> <td colspan="5"> </td> </tr> <tr> <td>2</td> <td>24</td> <td>42</td> <td>66</td> <td>103</td> <td>168</td> <td>266</td> <td>432</td> <td>675</td> <td> </td> <td> </td> <td> </td> </tr> <tr> <td>4</td> <td>48</td> <td>18</td> <td>33</td> <td>52</td> <td>84</td> <td>133</td> <td>216</td> <td>337</td> <td>543</td> <td>675</td> <td> </td> </tr> <tr> <td>6</td> <td>72</td> <td>14</td> <td>22</td> <td>33</td> <td>56</td> <td>89</td> <td>141</td> <td>225</td> <td>360</td> <td>450</td> <td>570</td> </tr> <tr> <td>8</td> <td>96</td> <td>10</td> <td>16</td> <td>27</td> <td>42</td> <td>66</td> <td>108</td> <td>168</td> <td>272</td> <td>338</td> <td>427</td> </tr> <tr> <td>10</td> <td>120</td> <td>8.5</td> <td>13</td> <td>22</td> <td>33</td> <td>53</td> <td>84</td> <td>135</td> <td>218</td> <td>270</td> <td>342</td> </tr> <tr> <td>15</td> <td>180</td> <td>6</td> <td>8.5</td> <td>13</td> <td>22</td> <td>35</td> <td>56</td> <td>90</td> <td>144</td> <td>180</td> <td>228</td> </tr> <tr> <td valign="top" width="8%">20</td> <td valign="top" width="8%">240</td> <td valign="top" width="8%" bgcolor="#ff0000"> </td> <td valign="top" width="8%">6.6</td> <td valign="top" width="8%">10</td> <td valign="top" width="8%">16</td> <td valign="top" width="8%">27</td> <td valign="top" width="8%">42</td> <td valign="top" width="9%">67</td> <td valign="top" width="9%">108</td> <td valign="top" width="9%">135</td> <td valign="top" width="9%">171</td> </tr> <tr> <td valign="top" width="8%" bgcolor="#ffffff">25</td> <td valign="top" width="8%" bgcolor="#ffffff">300</td> <td valign="top" width="8%" bgcolor="#ff0000"> </td> <td valign="top" width="8%" bgcolor="#ff0000"> </td> <td valign="top" width="8%" bgcolor="#ffffff">8</td> <td valign="top" width="8%" bgcolor="#ffffff">13</td> <td valign="top" width="8%" bgcolor="#ffffff">22</td> <td valign="top" width="8%" bgcolor="#ffffff">33</td> <td valign="top" width="9%" bgcolor="#ffffff">54</td> <td valign="top" width="9%" bgcolor="#ffffff">86</td> <td valign="top" width="9%" bgcolor="#ffffff">108</td> <td valign="top" width="9%" bgcolor="#ffffff">137</td> </tr> <tr> <td valign="top" width="8%" bgcolor="#ffffff">30</td> <td valign="top" width="8%" bgcolor="#ffffff">360</td> <td valign="top" width="8%" bgcolor="#ff0000"> </td> <td valign="top" width="8%" bgcolor="#ff0000"> </td> <td valign="top" width="8%" bgcolor="#ffffff">6.6</td> <td valign="top" width="8%" bgcolor="#ffffff">11</td> <td valign="top" width="8%" bgcolor="#ffffff">18</td> <td valign="top" width="8%" bgcolor="#ffffff">28</td> <td valign="top" width="9%" bgcolor="#ffffff">45</td> <td valign="top" width="9%" bgcolor="#ffffff">72</td> <td valign="top" width="9%" bgcolor="#ffffff">90</td> <td valign="top" width="9%" bgcolor="#ffffff">114</td> </tr> <tr> <td valign="top" width="8%">40</td> <td valign="top" width="8%">480</td> <td valign="top" width="8%" bgcolor="#ff0000"> </td> <td valign="top" width="8%" bgcolor="#ff0000"> </td> <td valign="top" width="8%" bgcolor="#ff0000"> </td> <td valign="top" width="8%">8</td> <td valign="top" width="8%">13</td> <td valign="top" width="8%">21</td> <td valign="top" width="9%">33</td> <td valign="top" width="9%">54</td> <td valign="top" width="9%">67</td> <td valign="top" width="9%">85</td> </tr> </tbody> </table> These are one-way distances, measured from point A to point B. The out and back nature of electrical circuits has already been included. For PV arrays, figure the entire run, from the panels to the charge controller to the batteries <hr> Cross reference of AWG (American Wire Gauge) sizes to metric (mm) <table style="border-style: solid; border-collapse: collapse; width: 70%;" class="style1" border="1" cellpadding="3" cellspacing="0"><tbody><tr> <td valign="bottom" width="11%" align="middle" bgcolor="#c80000"> AWG</td> <td valign="bottom" width="11%" align="middle" bgcolor="#c80000"> mm<sup>2</sup></td> <td rowspan="8" width="2%" bgcolor="#ffffff"> </td> <td valign="bottom" width="11%" align="middle" bgcolor="#c80000"> AWG</td> <td valign="bottom" width="11%" align="middle" bgcolor="#c80000"> mm<sup>2</sup></td> <td rowspan="8" width="2%" bgcolor="#ffffff"> </td> <td valign="bottom" width="11%" align="middle" bgcolor="#c80000"> AWG</td> <td valign="bottom" width="11%" align="middle" bgcolor="#c80000"> mm<sup>2</sup></td> <td rowspan="8" width="2%" bgcolor="#ffffff"> </td> <td valign="bottom" width="11%" align="middle" bgcolor="#c80000"> AWG</td> <td valign="bottom" width="11%" align="middle" bgcolor="#c80000"> mm<sup>2</sup></td> </tr> <tr> <td width="11%" align="middle">30</td> <td width="11%" align="middle">0.05</td> <td width="11%" align="middle">18</td> <td width="11%" align="middle">0.75</td> <td width="11%" align="middle">6</td> <td width="11%" align="middle">16</td> <td width="11%" align="middle">4/0</td> <td width="11%" align="middle">120</td> </tr> <tr> <td width="11%" align="middle">28</td> <td width="11%" align="middle">0.08</td> <td width="11%" align="middle">17</td> <td width="11%" align="middle">1.0</td> <td width="11%" align="middle">4</td> <td width="11%" align="middle">25</td> <td width="11%" align="middle">300MCM</td> <td width="11%" align="middle">150</td> </tr> <tr> <td width="11%" align="middle">26</td> <td width="11%" align="middle">0.14</td> <td width="11%" align="middle">16</td> <td width="11%" align="middle">1.5</td> <td width="11%" align="middle">2</td> <td width="11%" align="middle">35</td> <td width="11%" align="middle">350MCM</td> <td width="11%" align="middle">185</td> </tr> <tr> <td width="11%" align="middle">24</td> <td width="11%" align="middle">0.25</td> <td width="11%" align="middle">14</td> <td width="11%" align="middle">2.5</td> <td width="11%" align="middle">1</td> <td width="11%" align="middle">50</td> <td width="11%" align="middle">500MCM</td> <td width="11%" align="middle">240</td> </tr> <tr> <td width="11%" align="middle">22</td> <td width="11%" align="middle">0.34</td> <td width="11%" align="middle">12</td> <td width="11%" align="middle">4.0</td> <td width="11%" align="middle">1/0</td> <td width="11%" align="middle">55</td> <td width="11%" align="middle">600MCM</td> <td width="11%" align="middle">300</td> </tr> <tr> <td width="11%" align="middle">21</td> <td width="11%" align="middle">0.38</td> <td width="11%" align="middle">10</td> <td width="11%" align="middle">6.0</td> <td width="11%" align="middle">2/0</td> <td width="11%" align="middle">70</td> <td width="11%" align="middle">750MCM</td> <td width="11%" align="middle">400</td> </tr> <tr> <td width="11%" align="middle">20</td> <td width="11%" align="middle">0.50</td> <td width="11%" align="middle">8</td> <td width="11%" align="middle">10</td> <td width="11%" align="middle">3/0</td> <td width="11%" align="middle">95</td> <td width="11%" align="middle">1000MCM</td> <td width="11%" align="middle">500</td></tr></tbody></table>

Tn...Andy | 06-23-2009 10:12 PM
Re: Practical Limits to DC length Probably easier and cheaper to stick a small PV panel on the roof and just wire it directly to a DC fan..... Prepacked unit: FRN 485+shipping Here Cheaper, way more CFM.....buy a 175 buck 12" fan and a used 45w panel: FANS Used Fleabay 45 watt panel ( Buy it now 159.....maybe less on bid ) Here

Pat | 06-24-2009 12:37 AM
Re: Practical Limits to DC length Why not use a cheap inverter and run extension cords to a cheap AC fan ?

Dave Thomas | 06-24-2009 12:53 AM
Re: Practical Limits to DC length Yo TG, what kind of fans are you going to use? What kind of load? And what kind of power supply? That being said I wouldn't go over 2 ohms. You could probably get away with 16 gauge if the fans aren't that big, but if you hook several in parallel and they are big 1A 12V fans I'd just use regular old Romex. A tiny solar panel and fan combo like Andy says would save you money in all that copper. I found some surplus 5 watt power Arco solar panels that should swing a 12V .5A fan during full sun at EPO, they were surplus Arco solar panels. 40 bucks a piece. If the fan is about 20 feet away 18AWG aught to fit the bill. AWG Dia-mils TPI Dia-mm Circ-mils Ohms/Kft Ft/Ohm Ft/Lb Ohms/Lb Lb/Kft *Amps MaxAmps 0000 459.99 2.1740 11.684 211592 0.0490 20402 1.5613 0.0001 640.48 282.12 423.18 000 409.63 2.4412 10.405 167800 0.0618 16180 1.9688 0.0001 507.93 223.73 335.60 00 364.79 2.7413 9.2657 133072 0.0779 12831 2.4826 0.0002 402.80 177.43 266.14 AWG Dia-mils TPI Dia-mm Circ-mils Ohms/Kft Ft/Ohm Ft/Lb Ohms/Lb Lb/Kft *Amps MaxAmps 0 324.85 3.0783 8.2513 105531 0.0983 10175 3.1305 0.0003 319.44 140.71 211.06 1 289.29 3.4567 7.3480 83690 0.1239 8069.5 3.9475 0.0005 253.33 111.59 167.38 2 257.62 3.8817 6.5436 66369 0.1563 6399.4 4.9777 0.0008 200.90 88.492 132.74 3 229.42 4.3588 5.8272 52633 0.1970 5075.0 6.2767 0.0012 159.32 70.177 105.27 4 204.30 4.8947 5.1893 41740 0.2485 4024.7 7.9148 0.0020 126.35 55.653 83.480 5 181.94 5.4964 4.6212 33101 0.3133 3191.7 9.9804 0.0031 100.20 44.135 66.203 6 162.02 6.1721 4.1153 26251 0.3951 2531.1 12.585 0.0050 79.460 35.001 52.501 7 144.28 6.9308 3.6648 20818 0.4982 2007.3 15.869 0.0079 63.014 27.757 41.635 8 128.49 7.7828 3.2636 16509 0.6282 1591.8 20.011 0.0126 49.973 22.012 33.018 9 114.42 8.7396 2.9063 13092 0.7921 1262.4 25.233 0.0200 39.630 17.456 26.185 AWG Dia-mils TPI Dia-mm Circ-mils Ohms/Kft Ft/Ohm Ft/Lb Ohms/Lb Lb/Kft *Amps MaxAmps 10 101.90 9.8140 2.5881 10383 0.9989 1001.1 31.819 0.0318 31.428 13.844 20.765 11 90.741 11.020 2.3048 8233.9 1.2596 793.93 40.122 0.0505 24.924 10.978 16.468 12 80.807 12.375 2.0525 6529.8 1.5883 629.61 50.593 0.0804 19.765 8.7064 13.060 13 71.961 13.896 1.8278 5178.3 2.0028 499.31 63.797 0.1278 15.675 6.9045 10.357 14 64.083 15.605 1.6277 4106.6 2.5255 395.97 80.447 0.2031 12.431 5.4755 8.2132 15 57.067 17.523 1.4495 3256.7 3.1845 314.02 101.44 0.3230 9.8579 4.3423 6.5134 16 50.820 19.677 1.2908 2582.7 4.0156 249.03 127.91 0.5136 7.8177 3.4436 5.1654 17 45.257 22.096 1.1495 2048.2 5.0636 197.49 161.30 0.8167 6.1997 2.7309 4.0963 18 40.302 24.813 1.0237 1624.3 6.3851 156.62 203.39 1.2986 4.9166 2.1657 3.2485 19 35.890 27.863 0.9116 1288.1 8.0514 124.20 256.47 2.0648 3.8991 1.7175 2.5762 AWG Dia-mils TPI Dia-mm Circ-mils Ohms/Kft Ft/Ohm Ft/Lb Ohms/Lb Lb/Kft *Amps MaxAmps 20 31.961 31.288 0.8118 1021.5 10.153 98.496 323.41 3.2832 3.0921 1.3620 2.0430 21 28.462 35.134 0.7229 810.10 12.802 78.111 407.81 5.2205 2.4521 1.0801 1.6202 22 25.346 39.453 0.6438 642.44 16.143 61.945 514.23 8.3009 1.9446 0.8566 1.2849 23 22.572 44.304 0.5733 509.48 20.356 49.125 648.44 13.199 1.5422 0.6793 1.0190 24 20.101 49.750 0.5106 404.03 25.669 38.958 817.66 20.987 1.2230 0.5387 0.8081 25 17.900 55.866 0.4547 320.41 32.368 30.895 1031.1 33.371 0.9699 0.4272 0.6408 26 15.940 62.733 0.4049 254.10 40.815 24.501 1300.1 53.061 0.7692 0.3388 0.5082 27 14.195 70.445 0.3606 201.51 51.467 19.430 1639.4 84.371 0.6100 0.2687 0.4030 28 12.641 79.105 0.3211 159.80 64.898 15.409 2067.3 134.15 0.4837 0.2131 0.3196 29 11.257 88.830 0.2859 126.73 81.835 12.220 2606.8 213.31 0.3836 0.1690 0.2535 AWG Dia-mils TPI Dia-mm Circ-mils Ohms/Kft Ft/Ohm Ft/Lb Ohms/Lb Lb/Kft *Amps MaxAmps 30 10.025 99.750 0.2546 100.50 103.19 9.6906 3287.1 339.18 0.3042 0.1340 0.2010 31 8.9276 112.01 0.2268 79.702 130.12 7.6850 4145.0 539.32 0.2413 0.1063 0.1594 32 7.9503 125.78 0.2019 63.207 164.08 6.0945 5226.7 857.55 0.1913 0.0843 0.1264 33 7.0799 141.24 0.1798 50.125 206.90 4.8332 6590.8 1363.6 0.1517 0.0668 0.1003 34 6.3048 158.61 0.1601 39.751 260.90 3.8329 8310.8 2168.1 0.1203 0.0530 0.0795 35 5.6146 178.11 0.1426 31.524 328.99 3.0396 10480 3447.5 0.0954 0.0420 0.0630 36 5.0000 200.00 0.1270 25.000 414.85 2.4105 13215 5481.7 0.0757 0.0333 0.0500 37 4.4526 224.59 0.1131 19.826 523.11 1.9116 16663 8716.2 0.0600 0.0264 0.0397 38 3.9652 252.20 0.1007 15.723 659.63 1.5160 21012 13859 0.0476 0.0210 0.0314 39 3.5311 283.20 0.0897 12.469 831.78 1.2022 26496 22037 0.0377 0.0166 0.0249 AWG Dia-mils TPI Dia-mm Circ-mils Ohms/Kft Ft/Ohm Ft/Lb Ohms/Lb Lb/Kft *Amps MaxAmps 40 3.1445 318.01 0.0799 9.8880 1048.9 0.9534 33410 35040 0.0299 0.0132 0.0198 </pre>

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