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= Calculating AC Electrical Capacity =
== Summary ==
Do the AC load calculation first because it will provide data for the peak load. However, peak load is shown first because it is shorter, and so it won't get lost at the bottom of the page.
A link to a [[#spreadsheet ]] is provided. See also [[ElectricalCapacityDC]].
== Peak Load ==
<table border="1" style="width:80%">
<tr><thalign="right">WatchPeriod:</th><th>0000 - 0004 (w)</th><th>0004 - 0008 (w)</th><th>0008 - 1200 (w)</th><th>1200 - 1600 (w)</th><th>1600 - 2000 (w)</th><th>2000 - 0000 (w)</th></tr>
<tr><td> </td><td> </td><td> </td><td> </td><td> </td><td> </td><td> </td></tr>
<tr><td>e.g., Toaster</td><td> </td><td>1500</td><td> </td><td> </td><td>1500</td><td> </td></tr>
==AC Load ==
<div id="spreadsheet"><i>Download spreadsheet:</i> [[Media:CalculatedLoadAC.xlsx|Microsoft Office xlsx]] | [[Media:CalculatedLoadAC.ods|Libre/Open Office ods]]</div>
The AC load is based on the duty cycle of an appliance. The duty cycle is the hours it is used in a day (24 hours).
* <watts total> * <duty cycle> = <watts/hour>
The below table identifies many common appliances and suggests some default values. [http://www.oksolar.com/technical/consumption.html OK Solar] also has some typical energy consumption for different devices. <i>Always confirm your actuals</i>.
<table border="1" style="width:10090%">
<tr><th>ITEM</th> <th>NUMBER</th> <th>WATTS</th> <th>WATTS<br />TOTAL</th> <th>HOURS<br />PER DAY</th> <th>DUTY<br />CYCLE</th> <th>WATTS<br />PER HOUR</th></tr>
<tr><td>CoffeeMaker</td> <td>1</td> <td>800</td> <td>800</td> <td>3.0</td> <td>0.13</td> <td>100</td></tr>
<tr><td colspan="7"> Computer </td></tr> <tr><td style="text-align:right"><i>Laptop computer </i></td><td> 0 </td><td> 50 </td><td> 0 </td><td> 6.0 </td><td> 0.25 </td><td> 0 </td></tr> <tr><td style="text-align:right"><i>Desktop computer </i></td><td> 0 </td><td> 250 </td><td> 0 </td><td> 6.0 </td><td> 0.25 </td><td> 0 </td></tr> <tr><td style="text-align:right"><i>Printer </i></td><td> 0 </td><td> 100 </td><td> 0 </td><td> 0.5 </td><td> 0.02 </td><td> 0 </td></tr> <tr><td bgcolor="#FF0000" colspan="7"> </td></tr> <tr><td> Electric frying pan </td><td> 0 </td><td> 1200 </td><td> 0 </td><td> 1.0 </td><td> 0.04 </td><td> 0 </td></tr> <tr><td> Waffle Iron </td><td> 0 </td><td> 1200 </td><td> 0 </td><td> 0.4 </td><td> 0.02 </td><td> 0 </td></tr> <tr><td bgcolor="#FF0000" colspan="7"> </td></tr> <tr><td> Drill 1/2" </td><td> 0 </td><td> 750 </td><td> 0 </td><td> </td><td> 0.00 </td><td> 0 </td></tr> <tr><td> Drill 1" </td><td> 0 </td><td> 1000 </td><td> 0 </td><td> </td><td> 0.00 </td><td> 0 </td></tr> <tr><td> Circular saw 8-1/4" </td><td> 0 </td><td> 1400 </td><td> 0 </td><td> </td><td> 0.00 </td><td> 0 </td></tr> <tr><td> CD Player </td><td> 0 </td><td> 35 </td><td> 0 </td><td> </td><td> 0.00 </td><td> 0 </td></tr> <tr><td bgcolor="#FF0000" colspan="7"> </td></tr> <tr><td> Hot plate </td><td> 0 </td><td> 1200 </td><td> 0 </td><td> </td><td> 0.00 </td><td> 0 </td></tr> <tr><td> Deep fryer </td><td> 0 </td><td> 1500 </td><td> 0 </td><td> </td><td> 0.00 </td><td> 0 </td></tr> <tr><td> Pressure cooker </td><td> 0 </td><td> 1000 </td><td> 0 </td><td> </td><td> 0.00 </td><td> 0 </td></tr> <tr><td> Curling Iron </td><td> 1 </td><td> 50 </td><td> 50 </td><td> 1.0 </td><td> 0.04 </td><td> 2 </td></tr> <tr><td> Hair Dryer </td><td> 1 </td><td> 1250 </td><td> 1250 </td><td> 1.0 </td><td> 0.04 </td><td> 52 </td></tr> <tr><td> Shaver </td><td> 0 </td><td> 15 </td><td> 0 </td><td> 0.3 </td><td> 0.01 </td><td> 0 </td></tr> <tr><td> Kettle </td><td> 1 </td><td> 1500 </td><td> 1500 </td><td> 3.0 </td><td> 0.13 </td><td> 188 </td></tr> <tr><td> Microwave </td><td> 1 </td><td> 1500 </td><td> 1500 </td><td> 5.0 </td><td> 0.21 </td><td> 313 </td></tr> <tr><td> Toaster </td><td> 1 </td><td> 1200 </td><td> 1200 </td><td> 3.0 </td><td> 0.13 </td><td> 150 </td></tr> <tr><td colspan="7"> Outlets </td></tr> <tr><td style="text-align:right"><i>Engine Room </i></td><td> 1 </td><td> 1500 </td><td> 1500 </td><td> 1.0 </td><td> 0.04 </td><td> 63 </td></tr> <tr><td style="text-align:right"><i> Pilot House </i></td><td> 1 </td><td> 1500 </td><td> 1500 </td><td> 1.0 </td><td> 0.04 </td><td> 63 </td></tr> <tr><td style="text-align:right"><i> Heads - GFC </i></td><td> 2 </td><td> 1500 </td><td> 3000 </td><td> 2.0 </td><td> 0.08 </td><td> 250 </td></tr> <tr><td style="text-align:right"><i> Port Berth </i></td><td> 1 </td><td> 1500 </td><td> 1500 </td><td> 1.0 </td><td> 0.04 </td><td> 63 </td></tr> <tr><td style="text-align:right"><i> Starboard Berth </i></td><td> 1 </td><td> 1500 </td><td> 1500 </td><td> 1.0 </td><td> 0.04 </td><td> 63 </td></tr> <tr><td style="text-align:right"><i> Galley </i></td><td> 4 </td><td> 1500 </td><td> 6000 </td><td> 1.0 </td><td> 0.04 </td><td> 250 </td></tr> <tr><td style="text-align:right"><i>Dinette </i></td><td> 1 </td><td> 1500 </td><td> 1500 </td><td> 1.0 </td><td> 0.04 </td><td> 63 </td></tr> <tr><td style="text-align:right"><i>Salon </i></td><td> 4 </td><td> 1500 </td><td> 6000 </td><td> 1.0 </td><td> 0.04 </td><td> 250 </td></tr> <tr><td style="text-align:right"><i>Aft Cabin </i></td><td> 3 </td><td> 1500 </td><td> 4500 </td><td> 1.0 </td><td> 0.04 </td><td> 188 </td></tr> <tr><td style="text-align:right"><b>SubTotal </b></td><td> </td><td> </td><td> </td><td> </td><td> </td><td> 1954 </td></tr> <tr><td bgcolor="#FF0000" colspan="7"> </td></tr> <tr><td colspan="7"> MOTORS & HEATERS </td></tr> <tr><td> Air Compressor </td><td> 0 </td><td> 0 </td><td> 0 </td><td> 0.0 </td><td> 0.00 </td><td> 0 </td></tr> <tr><td> Battery Charger </td><td> 0 </td><td> 0 </td><td> 0 </td><td> 0.0 </td><td> 0.00 </td><td> 0 </td></tr> <tr><td> Exhaust & Supply Fans </td><td> 0 </td><td> 0 </td><td> 0 </td><td> 0.0 </td><td> 0.00 </td><td> 0 </td></tr> <tr><td> Air Conditioners </td><td> 0 </td><td> 0 </td><td> 0 </td><td> 0.0 </td><td> 0.00 </td><td> 0 </td></tr> <tr><td> Water Heater </td><td> 1 </td><td> 4000 </td><td> 4000 </td><td> 4.0 </td><td> 0.17 </td><td> 667 </td></tr> <tr><td> Electric, gas or oil Heaters </td><td> 0 </td><td> 0 </td><td> 0 </td><td> 0.0 </td><td> 0.00 </td><td> 0 </td></tr> <tr><td> 25% of Largest Motor </td><td> 1 </td><td> 0 </td><td> 0 </td><td> 0.0 </td><td> 0.00 </td><td> 0 </td></tr> <tr><td style="text-align:right"><b>SubTotal </b></td><td> </td><td> </td><td> </td><td> </td><td> </td><td> 667 </td></tr> <tr><td bgcolor="#FF0000" colspan="7"> </td></tr> <tr><td colspan='7"> BUILT-IN APPLIANCES </td></tr> <tr><td> Clothes </td><td> </td><td> </td><td> </td><td> </td><td> </td><td> </td></tr> <tr><td> Clothes Dryer </td><td> 0 </td><td> 1300 </td><td> 0 </td><td> 3.0 </td><td> 0.13 </td><td> 0 </td></tr> <tr><td> Clothes Washer </td><td> 0 </td><td> 500 </td><td> 0 </td><td> 3.0 </td><td> 0.13 </td><td> 0 </td></tr> <tr><td> Clothes Dryer/Washer Combo </td><td> 1 </td><td> 1300 </td><td> 1300 </td><td> 3.0 </td><td> 0.13 </td><td> 163 </td></tr> <tr><td> Dishwasher </td><td> 1 </td><td> 1500 </td><td> 1500 </td><td> 3.0 </td><td> 0.13 </td><td> 188 </td></tr> <tr><td> Disposal </td><td> 0 </td><td> 450 </td><td> 0 </td><td> </td><td> 0.00 </td><td> 0 </td></tr> <tr><td> Freezer </td><td> 0 </td><td> 0 </td><td> 0 </td><td> </td><td> 0.00 </td><td> 0 </td></tr> <tr><td> Vacuum cleaner </td><td> 0 </td><td> 700 </td><td> 0 </td><td> </td><td> 0.00 </td><td> 0 </td></tr> <tr><td> Ice Maker </td><td> 0 </td><td> 200 </td><td> 0 </td><td> </td><td> 0.00 </td><td> 0 </td></tr> <tr><td> Oven </td><td> 0 </td><td> 0 </td><td> 0 </td><td> </td><td> 0.00 </td><td> 0 </td></tr> <tr><td> Refrigerator </td><td> 0 </td><td> 750 </td><td> 0 </td><td> 8.0 </td><td> 0.33 </td><td> 0 </td></tr> <tr><td colspan="7"> Stove Top </td></tr> <tr><td style="text-align:right"><i> Induction </i></td><td> 1 </td><td> 2600 </td><td> 2600 </td><td> 4.0 </td><td> 0.17 </td><td> 433 </td></tr> <tr><td style="text-align:right"><i> Halogen </i></td><td> 0 </td><td> </td><td> 0 </td><td> </td><td> 0.00 </td><td> 0 </td></tr> <tr><td style="text-align:right"><i> Coils </i></td><td> 0 </td><td> </td><td> 0 </td><td> </td><td> 0.00 </td><td> 0 </td></tr> <tr><td style="text-align:right"><i> Solid Disc </i></td><td> 0 </td><td> </td><td> 0 </td><td> </td><td> 0.00 </td><td> 0 </td></tr> <tr><td> Towel Rail </td><td> 5 </td><td> 100 </td><td> 500 </td><td> </td><td> 0.50 </td><td> 250 </td></tr> <tr><td> Trash Compactor </td><td> 0 </td><td> 0 </td><td> 0 </td><td> </td><td> 0.00 </td><td> 0 </td></tr> <tr><td> TV </td><td> 1 </td><td> 1500 </td><td> 1500 </td><td> </td><td> 0.25 </td><td> 375 </td></tr> <tr><td> Vacuum System </td><td> 0 </td><td> 0 </td><td> 0 </td><td> </td><td> 0.00 </td><td> 0 </td></tr> <tr><td> Other </td><td> 0 </td><td> 0 </td><td> 0 </td><td> </td><td> 0.00 </td><td> 0 </td></tr> <tr><td style="text-align:right"><b>SubTotal </b></td><td> </td><td> </td><td> </td><td> </td><td> </td><td> 875 </td></tr> <tr><td bgcolor="#FF0000" colspan="7"> </td></tr> <tr><td colspan="7"> FREESTANDING RANGE </td></tr> <tr><td> Load Watts </td><td> 0 </td><td> 0 </td><td> 0 </td><td> </td><td> 0.00 </td><td> 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 </td></tr><tr><td bgcolor="#FF0000" colspan="7"> </td></tr> <tr><td style="text-align:right"><b>TOTAL </b></td><td> </td><td> </td><td> </td><td> </td><td> </td><td> 3496 </td></tr>
</table>
[[Category:ElectricalCapacity]]
[[Category:Appliances]]
