Bureaucrat, staff, administrator
4,335
edits
Changes
m
See also [[ElectricalCapacityAC]].== DC Load ==
→Summary
== Summary ==
Calculating DC (direct current) load for the [[DCPrimarySystem|DC primary system]] is an activity in determining the capacity of the boat's house bank of DC batteries. Over estimating the numbers to provide comfort in the individual calculations is not recommended. It is better to add spare capacity calculations directly to the [[:Category:ElectricalPrimarySupply|house bank]] specifications.<ref>http://www.powerstream.com/battery-capacity-calculations.htm</ref> <ref>http://web.mit.edu/evt/summary_battery_specifications.pdf</ref>
A link to a spreadsheet is provided.
<div id="spreadsheet"><i>Download spreadsheet:</i> [[Media:CalculatedLoadDC.xlsx|Microsoft Office xlsx]] | [[Media:CalculatedLoadDC.ods|Libre/Open Office ods]]</div>
<table border="1" style="width:90%">
<tr><th>ITEM </th><th> NUMBER </th><th> AMPS </th><th> AMPS <br>TOTAL </th><th> HOURS <br>PER DAY </th><th> DUTY <br>CYCLE </th><th> AMP <br>HOURS </th></tr>
<tr><td colspan="7"> FIXED LOADS </td></tr>
<tr><td colspan="7"><b> Cabins </b></td></tr>
<tr><td> Ventilation - Engine </td><td> 2 </td><td> 0.0 </td><td> 0.0 </td><td> 24.0 </td><td> 100% </td><td> 0.0 </td></tr>
<tr><td style="text-align:right"><b> SubTotal </b></td><td> </td><td> </td><td> </td><td> </td><td> </td><td> 5.0 </td></tr>
<tr><td bgcolor="#FF0000" colspan="7"> </td></tr>
<tr><td> Other </td><td> 0 </td><td> 0.0 </td><td> 0.0 </td><td> 0.0 </td><td> 0% 0.0 </td></tr><tr><td style="text-align:right"><b> SubTotal </b></td><td> </td><td> </td><td> </td><td> </td><td> </td><td> 0.0 </td></tr><tr><td> Total Fixed </td><td></td> <td></td><td></td><td></td><td></td> <td> 5.0 </td></tr>
<tr><td bgcolor="#FF0000" colspan="7"> </td></tr>
<tr><td colspan="7"> INTERMITTENT LOADS </td></tr>
<tr><td style="text-align:right"><i> 20 W Fluorescent </i></td><td> 0 </td><td> 1.60 </td><td> 0.0 </td><td> 6.0 </td><td> 25% </td><td> 0.0 </td></tr>
<tr><td style="text-align:right"><i> 26 W Fluorescent </i></td><td> 0 </td><td> 2.10 </td><td> 0.0 </td><td> 6.0 </td><td> 25% </td><td> 0.0 </td></tr>
<tr><td style="text-align:right"><b> SubTotal Lights </b></td><td> </td><td> </td><td> </td><td> </td><td> </td><td> 13.9 </td></tr>
<tr><td bgcolor="#FF0000" colspan="7"> <tr><td bgcolor="#FF0000" colspan="7"> </td></tr>
<tr><td> Cigarette Lighter </td><td> 0 </td><td> 0.0 </td><td> 0.0 </td><td> 1.0 </td><td> 4% </td><td> 0.0 </td></tr>
<tr><td style="text-align:right"><i> Stereo - Main Cabin </i></td><td> 1 </td><td> 8.3 </td><td> 8.3 </td><td> 4.0 </td><td> 17% </td><td> 1.4 </td></tr>
<tr><td style="text-align:right"><i> Microwave </i></td><td> 0 </td><td> 68.0 </td><td> 0.0 </td><td> 0.0 </td><td> 0% </td><td> 0.0 </td></tr>
<tr><td style="text-align:right"><b> SubTotal Equipment </b></td><td> </td><td> </td><td> </td><td> </td><td> </td><td> 9.7 </td></tr>
<tr><td bgcolor="#FF0000" colspan="7"> <tr><td bgcolor="#FF0000" colspan="7"> </td></tr>
<tr><td colspan="7"> Machinery </td></tr>
<tr><td style="text-align:right"><i> Cold Plate </i></td><td> 1 </td><td> 35.0 </td><td> 35.0 </td><td> 2.0 </td><td> 8% </td><td> 2.9 </td></tr>
<tr><td style="text-align:right"><i> Constant Cycling </i></td><td> 0 </td><td> 7.0 </td><td> 0.0 </td><td> 8.0 </td><td> 33% </td><td> 0.0 </td></tr>
<tr><td> Sewage Pump </td><td> 1 </td><td> 0.0 </td><td> 0.0 </td><td> 2.0 </td><td> 8% </td><td> 0.0 </td></tr><tr><td style="text-align:right"><b> SubTotal Machinery </b></td><td> </td><td> </td><td> </td><td> </td><td> </td><td> 5.1 </td></tr>
<tr><td bgcolor="#FF0000" colspan="7"> <tr><td bgcolor="#FF0000" colspan="7"> </td></tr>
</table>
See also [[ElectricalCapacityAC]].
== Links ==
[[Category:ElectricalCapacity]]