solarseller.com    alternative energy   by   John Drake Services, Inc.     |     home
 1 Site Search - Quick Index   |    2 The Realities of Purchasing On-Line   |    3 Why Do Business With Us?   |    4 Distributor of IOTA Engineering, Quick Cable and Thin-Lite products   |    5 Photovoltaics,Batteries, Cable and Wire   |    6 Lumen Outputs of Compact Fluorescent and Incandescent Lights   |    7 48 volt D.C. fluorescent lights   |    8 Low Voltage DC Lights   |    9 Low Voltage DC Lighting   |   10 Thin-Lite Emergency Survival Disaster LED lights   |   11 DC Compact Fluorescent Screw-in Ballasts & Tubes   |   12 DC Compact Fluorescent Screw-in One Piece Lights   |   13 Balanced Battery Charging and Dis-Charging by IOTA   |   14 Portable & Emergency Fluorescent Light by Flexcharge   |   15 DC Fluorescent Inverter Ballasts by IOTA Engineering and Montana Light     |   16 Charge Controller Musings   |   17 Bogart Engineering SC-2030 Solar Charge Controller   |   18 PV Solar charge controllers with night lighting load by Flexcharge   |   19 Thinlite Indoor Fluorescent Lights   |   19 A - LED Lighting by Thin-Lite   |   20 Thinlite Outdoor Lights   |   21 Thinlite Replacement Ballasts   |   22 Thinlite Replacement Lens - Diffusers   |   23 Thinlite DC Lighting Products   |   24 DC Lighting   |   Glossary of Alternative Energy Terms   |   25 Parallel and Series Battery Bank Information   |   26 What we sell and why.   |   27 Amps Volts and Watts   |   CHARGE CONTROLLERS   |   28 Emergency and Disaster Preparedness Notes   |   29 Photovoltaic Module & System Wiring - Setting Up A PV System   |   30 Wind - Hydro - Solar Charge Controllers by Flexcharge   |   31 Water and Air Heating Diversion Loads for Charge Controllers   |   32 Maximum Power Point Tracking Solar Charge Controllers by Solar Converters   |   33 Solar Converters, Inc. Charge & Lighting Controllers   |   34 SES Flexcharge Solar Single or Dual Battery Charge Controllers   |   35 Thin-Lite ballast replacement installation guide   |   36 Solar Converters Special Solar and Battery Charging Equipment   |   37 TriMetric Battery System Monitors and Deltec Co. shunts   |   38 Timers,Linear Current Boosters,Photoswitch,Voltage Controlled Switches   |   39 Battery Desulphator by Solar Converters, Inc.   |   40 Solar Converters, Inc. Products   |   41 SES Flexcharge Products   |   42 QuickCable links to instock products   |   43 Thin-Lite products we stock     |   44 DC Fuse & Circuit Breaker Types & Installation   |   45 Switches - DC rated wall switches   |   46 IOTA Engineering IQ4 Smart Charge Controller Owners Manual   |   47 Our own alternative energy systems   |   48 DC Fuses, Holders & Fuse Blocks   |   49 Class T- DC Fuses & Fuse Blocks   |   50 ANN - ANL - CNL DC Fuses & Fuse Blocks   |   51 Inverter Cable and Overcurrent Protection Guide   |   52 Installation and trouble shooting low voltage d.c. lighting   |   53 Diodes - Blocking & Bypass, What do they do?   |   54 Low Voltage D.C. Lighting Tips   |   55 Your On-Line Privacy   |   56 Electric Vehicle and Alternative Energy Battery Disconnects   |   57 Thin-Lite Special Order replacement ballasts   |   58 Cable and Butt Splices & Connectors   |   BATTERY POST & TERMINAL CONNECTIONS,  ADAPTERS AND BATTERY ACCESSORIES   |   59 Battery Post Marine Conversions & Terminal Extensions   |   60 Battery Post Connectors Conversions Adapters Repair   |   61 Battery Terminal & Post - Cable Lug Covers & Protectors   |   62 Heat Shrink Tubing & Cable Lugs by QuickCable       |   63 Cable Lugs - Compression Connectors - No Crimping & No Soldering   |   64 Heavy Duty Cast Copper Connectors - Lugs   |   65 Cable Lugs - Copper Connectors  - by Quick Cable - MAX   |   66 Cable Lugs - Magna Lug Heavy Duty & Fusion by QuickCable   |   67 Anderson SB Connectors   |   68 Anderson SB Connector Accessories   |   69 Anderson SB Connector Parts   |   70 Thin-Lite LED and Fluorescent Comparisons   |   71 Overview of Our Photovoltaic Systems   |   72 Iota Engineering Battery Chargers / Converters     |   73 SAE Connectors, Plugs, Sockets & Cords   |   74 Electric Vehicle Power Supplies Converters by IOTA Engineering   |   75 DC to DC Voltage Converters & Dimmers by Solar Converters   |   76 Universal Generator Starter switch by Solar Converters   |   77 Stranded vs Solid Wire in low voltage systems   |   78 IOTA Engineering Power and Lighting products   |   79 Thin-Lite Ballast Wiring Layouts   |   80 Wire & Cable Gauges and Information   |   81 TriMetric 2030 and SC-2030 Wiring Layout   |   82 DC to DC Voltage Converters   |   83 TriMetric 2030 Battery Monitor Features   |   84 IOTA Engineering DLS Battery Charger Features   |   85 Lighting Systems   |   86 Practical Alternative Energy Applications   |   87 Portable  and Emergency Power Systems   |   88 Custom Cables   |   89 Thin-Lite Special Order Fluorescent Models & Pricing   |   90 Resources for Disaster & Emergency Preparedness   |   91 Thin-Lite Special Order LED Light Models & Pricing   |   93 My solar / photovoltaic history   |   94 Battery Wiring Diagrams   |   95 Battery Condition and State of Charge Charts   |   96 Order Form   |   97 Backup Power?   |   98 Energy Expectations   |   99 Power Needs Worksheet   |   100 Efficiency   |   101 Wire Loss Chart   |   102 Solar Insolation Map / Chart   |   103 Utility Inter-tie   |   104 About Us   |   105 Statement of Policy & Warranty/Returns   |   Contact Us   |   MPPT Charge Controllers - FAQ   |   Battery Equalizer/DC Autotransformers - FAQ   |   Constant Voltage Pump Drivers  - FAQ   |   Linear Current Boosters - FAQ   |   Information   |   1   |   2   |   3   |   4   |   5   |   6   |   7   |   NEWS-info links   |   Home Power Articles   |   R   |   P   |   A   |   B   |   C   |   D
(562) 423-4879
99 Power Needs Worksheet
This work sheet can be used for both alternative energy systems
and back up power systems.
To determine how much power you need to produce, please print out
and use this work sheet to find out how much power you will be using.  
Description of A.C.
loads run by inverter
Load
wattage
Note # 1
Hours per
day used
Total watt
hours per
day used
Total watt
hours per
week used
X
=
X 7
=
X
=
X 7
=
X
=
X 7
=
X
=
X 7
=
X
=
X 7
=
X
=
X 7
=
X
=
X 7
=
X
=
X 7
=
X
=
X 7
=
X
=
X 7
=
Note # 1 - Wattage of appliances can usually be determined from the tag on the back of the appliance or from the owner's manual. If an appliance is rated in amps, mulitply amps by the voltage that is used by the appliance (120 or 240 volts a.c.) to find the watts.
Total watt hours per week of all A.C. loads

       =

    Multiply By
 1.25
Row # 1
To get watt hours per week used, corrected for battery, inverter and power source / wiring   losses


       =
Description of D.C. loads
Load wattage
Note # 2


Hours per day used
Total watt hours per day used
Total watt hours per week used
X
=
X 7
=
X
=
X 7
=
X
=
X 7
=
X
=
X 7
=
X
=
X 7
=
X
=
X 7
=
X
=
X 7
=
X
=
X 7
=
X
=
X 7
=
X
=
X 7
=
Note # 2 - Since most d.c. loads are rated in amps, multiply the amp rating of the load by the voltage it uses (12, 24 or 48 volts d.c.) to come up with the wattage.  
Total watt hours per week of all d.c. loads

        =
    Multiply By
  1.125
Row # 2
To get watt hours per week used, corrected for battery and source / wiring losses


        =
Note # 3 - These figures do not take into account the days of rain or overcast                 conditions where a photovoltaic system
will be relying on battery storage only. The same holds true with a wind or hydro system where the wind is calm or the water flow is reduced or stopped.  
Add Row # 1 and Row # 2 to get the weekly amount of wattage your source needs to produce, please see Note # 3



      =
Note # 4 - To find the weekly amp hours that the source needs to produce, take
                  the total d.c. watt hours and divide by the system voltage (12,24,or
                  48 volts d.c.).