WMJ Marine
Anchor & Docking
Boating Accessories
Boat Engine Parts
Boat Furniture
Cabin & Galley & Deck
Communication
Electrical Supply
Fishfinder & Sonar
Fishing & Hunting
GPS & Chartplotter
Marine Autopilot
Marine Electronics
Marine Instrument
Marine Radar
Marine Safety
Navigation Tool
Plumbing & Pump
Steering & Engine Control
Trailers Parts
Specials
Remanufactured
How To Order
Contact Us
Government Order

Testimonials
Product Videos
Privacy Policy
Company Info
Site Map
Send me more info
Resources
Links
Link to Us
Shopping Cart




_________________
Email Newsletter icon, E-mail Newsletter icon, Email List icon, E-mail List icon Sign up for our Email Newsletter
For Email Marketing you can trust





WMJ Marine
How to Order Shopping CartContact Us Shipping Info International Order
Tutorials >

Power Inverter Tutorial




What is an Inverter?

Controlled by a sophisticated microprocessor, it converts DC power from an energy source into AC Power.

What is an Inverter/Charger?

Many systems incorporate an inverter/charger, which is a combination of an inverter, battery charger and transfer switch in one. The inverter portion converts DC power from an energy source into AC Power. The battery charger processes incoming AC power into DC power and recharges batteries using a multi-stage process, which helps assure maximum battery life. Some models are also able to automate supplementary power production with automatic generator start and stop capabilities.

 

Do I need to install my inverter near my batteries?

Ideally an inverter should be installed within 10 feet of the battery bank. If you increase this distance, you will need to use larger DC cables to compensate for a drop in voltage and DC ripple.

 

Can I install my inverter/charger in a gasoline engine compartment?

All Xantrex Inverter/Chargers are not ignition protected and therefore should not be installed in a gasoline engine compartment. They are approved for installation in a diesel engine compartment.

 

What type of environmental conditions must I consider when installing an inverter/charger?

All Xantrex Inverter/Chargers must be installed in a dry, well-ventilated compartment. While most units are designed to withstand corrosion from the salty air, they are not splash proof. The units also require a fresh air supply to operate properly.

Inverter Selection Worksheet

 

 

This worksheet will help you determine the inverter and battery bank required to operate your specific loads:

 

Load

(Sample)

Qty Wattage

(w)

Conversion to DC Amps

(c)

Actual DC Amps

(a)

Appliance Run Time

(hours h)

Amp Hours Consumed Between Charge Cycles
      w / 12 c X 1.1   a X h
19 TV 1 100 8.3 9.1 4.0 36.4
Coffee Maker 1 1000 83.3 91.7 0.5 45.9
Microwave 1 1200 100.0 110 0.17 18.7
Hair Dryer 1 1600 133.3 146.7 0.17 24.9
             
    3900     Total Ah 125.9

Choosing the right inverter

When sizing your inverter, calculate the total wattage required at any one time and choose the inverter with a slightly higher power output. (Start up surge should be considered for compressive loads.)

Determining your battery bank requirements

1. Converting AC amps to Watts: AC amps x 120 Volts = Watts

2. Convert Watts to Actual DC amps: (Watts / 12) x 1.1 = actual DC amps

3. amp hours consumed between charge cycles:

run-time of appliance (hours) X actual DC amps = amp hours consumed

4. Number of batteries required:

(Total amp hours consumed X 2*) / amp hour rating of battery = Number of batteries required

*Since deep cycle batteries should only be discharged to 50% total capacity, the total amp hours consumed between charge cycles should be multiplied by 2.

Example:

amp hours consumed between charge cycle = 126

amp hour rating of battery = 90 (Group 27)

(126X2) / 90 = 2.8

(Round up to the nearest whole number.)

Therefore, the minimum number of batteries required is three with the above values.

Typical Battery Amp Hour Rating
Battery Size Amp Hour Rating
Group 27 90
Group 31 105
4D 160
8D 220
6V Golf Cart 225

 

What size of inverter do I need?

Choosing the right size of inverter depends on the power requirements of the appliances you expect to operate at any given time. You should consider both the continuous and surge power rating of your appliance. The continuous rating must be high enough to handle all the loads that may run at the same time. The inverter must also be capable of handling the starting surge of all loads that may start at the same time. Loads typically take many times their continuous rating to start.

 

How long can I operate my inverter?

The length of time you can operate an inverter depends on the amp-hour capacity of your battery bank.

 

Can I use my computer with an inverter?

Both sine-wave and modified sine-wave inverter output will operate a computer. However, some monitors and laser printers can only be powered by sine wave output.

Is it possible to run an air conditioner on an inverter?

Yes, it is possible to operate a small air conditioner in the 5000-9000 BTU range using a higher-powered inverter and battery bank with the right capacity for power. Select an inverter and battery combination that takes into account the startup surge required by the air conditioner.

Should I leave my inverter ON or OFF when shorepower is available?

When shorepower is available, you may leave your inverter ON or OFF. There are advantages and disadvantages to both methods. If the inverter is left ON, you have immediate backup AC power if you lose shorepower. You may not be aware shorepower is lost until your batteries are fully discharged. If you choose to leave your inverter OFF you have the advantage of knowing when you have lost shorepower. This, however, is at the expense of losing automatic backup power capabilities.

What is automatic AC transfer switching?

All Xantrex Inverter/Chargers incorporate an automatic transfer switch. This switch senses when outside AC Power is present and transfers the load from the inverter to the source of incoming power (shore or generator). The unit also automatically switches from invert mode to charge mode.

 




***The price is subject to change at anytime without any notice

_______________________________________________________________________________
Dear Customer

We are proud to serve you with any assistance we can provide via email ask@wmjmarine.com or toll free number at
1-877-330-9758 for USA or (858) 720-0776 for International Customers.

You will find the vast choices of marine products including Marine GPS & Chartplotter (including Garmin GPS, Lowrance GPS, Raymarine GPS), Fish Finder ( Furuno Fishfinder, Lowrance Fishfinder, Humminbird Fish Finder ), Marine Radar, Marine Electronics, VHF radio, Marine Supply,  Boat Part, Boat Autopilot, Windlass, Anchor Winch, Boat Steering, Bow Thruster, Downrigger, Life Raft, Trolling Motor  from major brands.

VeriSign Trust Seal


128-bit Encryption Shopping Cart


We accept all major credit cards & Paypal

All personal information you submit is encrypted and 100% secure

We offer online shipment tracking

  

UPS Shipping Cost can be seen during the checkout, right before submitting the order

We use the Secure-Server that supports industry-standard 128-bit SSL encryption for your safe online transaction.

WMJ Marine offers a Variety of Marine supply and Boating equipment for your Exciting Boating Life including GPS ( Garmin GPS, Lowrance GPS, Furuno GPS, Raymarine GPS, Standard Horizon GPS, Simrad GPS ), Fish finder ( Furuno Fishfinder Humminbird fish finder, Garmin fish finder, Sitex Fishfinder, Raymarine Fishfinder, Lowrance fish finder, GPS fish finder ),  Marine Electronics, Marine VHF radio ( Icom Radio, Standard Horizon Radio, Uniden VHF ),  Marine Radar ( Furuno radar, Sitex Radar, Raymarine Radar, JRC Radar, Simrad Radar, Garmin Radar ), Windlass ( Maxwell windlass, Lewmar Windlass, Powerwinch, Boat Anchor, Anchor Winch, Trailer Winch ), Navigation chart ( Navionics, Cmap, Garmin Blue chart ), Inverter ( Xantrex Inverter Charger, marine battery charger ), Marine Search Light, Marine Spot Light, Trolling motor ( minn kota trolling motor, motorguide trolling motor ), boat part ( Trim Tab, Boat starter, boat propeller), Marine part, Marine safety ( EPIRB, Lift Jackets, Life Vest, watermaker, Marine Light Marine Autopilot, Marine Chart ). 

Popular Marine Product: Powerwinch | Trailer Winch | Anchor Winch | Maxwell Windlass | Lewmar Windlass | Lewmar Profish | Minn Kota Talon | Anchor Rode | Boat Anchor | Lewmar Winch | Raymarine Autopilot | Raymarine evolution | Raymarine ev100 | Raymarine ev200 | Raymarine ev300 | Raymarine ev400 | Raymarine Sport Pilot | Raymarine Wheel Pilot | Raymarine Tiller Pilot | Simrad Autopilot | Simrad TP22 | Simrad TP32 | Simrad Ap24 | Simrad Ap28 | Simrad Ap35 | Simrad Ap50 | Simrad ap70 | Simrad ap80 Furuno Autopilot | Furuno Navpilot | Garmin Autopilot | Garmin GHP10 | Garmin GHP12 | Garmin GHP20 | Comnav Autopilot | Sitex Autopilot | B&G Autopilot | Bow Thruster | Stern Thruster | Lewmar Bow Thruster | Vetus Bow Thruster | Sideshift Bow Thruster | Boat Steering | Boat Hydraulic Steering | Boat Mechanical Steering | Seastar Steering | Baytar Steering | Baytar HK4200 | Baytar HK7400 | Outboard Steering Kit | Baytar HK6400A | Boat Fuel Tank | Outboard Motor Mount | Boat Motor Mount | Power Tilt | Tilt And Trim  | Boat Search Light | Marine Search Light | Boat Spot Light | ACR Spotlight | Jasbco Spotlight | VHF Radio | Marine Radio | Icom Radio | Standard Horizon Radio | Boat AIS | Boat Automatic Identification System | Furuno AIS | Raymarine AIS | Raymarine Radio | Garmin Radio | Marine Satellite TV | Boat Satellite TV | KVH Satellite TV | Raymarine Satellite TV | KVH Tracvision | Cell Phone Amplifier | Cell Phone Booster | Boat Internet | Intellian Satellite | Marine Satellite Internet | Boat Satellite Phone | KVH Tracphone | Iridium 9555 | Inmarsat Phone | Boat Antenna | VHF Antenna | SSB Antenna | Icom SSB Radio | Furuno SSB | Icom M802 | Marine Battery Charger | Boat Battery Charger | Inverter Charger | Boat Inverter | Marine Isolation Transformer | Boat Power Supply | Boat Electrical Panel | Blue Sea Panel | Xantrex Inverter Charger | Magnum Inverter | Newmar Inverter | Marine Light | Xantrex Freedom | Xantrex Prosine | Boat Ice Maker | Marine Refrigerator | Lowrance hds-12 | Lowrance hds-9 | Lowrance elite-7 | Lowrance elite-7x | Lowrance HDS-5 Gen2 | Lowrance HDS-7 Gen2 | Lowrance HDS-8 Gen2 | Lowrance HDS-10 Gen2 | Lowrance HDS | Lowrance LSS-2 | Lowrance Structurescan | Lowrance Elite-5 | Lowrance Elite-4 | Garmin 820 | Garmin 820xs | Garmin 1020 | Garmin 1020xs | Garmin 1040xs | Garmin 840xs | Garmin 721xs | Garmin 741 | Garmin 741xs | Garmin echomap 50s | Garmin echomap 70s | Garmin echomap 50dv | Garmin echomap 70dv | Garmin gsd24 | Garmin gsd22 Garmin Echo  | Garmin GPSMAP 5008 | Garmin GPSMAP 5208 | Garmin GPSMAP 4010 | Garmin GPSMAP 4210  | Garmin GPSMAP 6008 | Garmin GPSMAP 6012 | Garmin GPSMAP 6208 | Garmin GPSMAP 6212 | Garmin GPSMAP 7012 | Garmin GPSMAP 7015 | Garmin GPSMAP 7212 | Garmin GPSMAP 7215 | Standard Horizon CPV550 | Standard Horizon Cp190 | Standard Horizon CPF190 | Standard Horizon Cp390 | Standard Horizon CPF390 | Standard Horizon Cp590 | Standard Horizon CPN700 | Standard Horizon CPN1010 | Raymarine Package | Raymarine e7 | Raymarine e7D | Raymarine c95 | Raymarine c97 | Raymarine c125 | Raymarine c127 | Raymarine e95 | Raymarine e97 | Raymarine e125 | Raymarine e127 | Raymarine DSM400  | Raymarine a65 | Raymarine a67 | Raymarine a68 | Raymarine a75 Raymarine a77 | Raymarine a78 | Raymarine dragonfly | Furuno GP32 | Furuno GP33 | Furuno MFD12 | Furuno MFD8 | Furuno Navnet | Furuno GP1920C | Furuno GPS | Furuno Chartplotter | Humminbird 998C  |  Humminbird 678c | Humminbird 678c DI | Humminbird 678c xd | Humminbird 688ci | Humminbird 698ci | Humminbird 698ci si | Humminbird 859ci | Humminbird 859ci di | Humminbird 899ci | Humminbird 859ci xd | Humminbird 959ci | Humminbird 959ci di | Humminbird 999ci | Humminbird 959ci xd | Humminbird 1159ci | Humminbird 1159ci di | Humminbird 1199ci si | Humminbird 1159ci xd | Humminbird onix8ci | Humminbird onix10ci | Humminbird ion10 | Humminbird ion12 Humminbird Down Imaging| Simrad nss16 evo2 | Simrad nss12 evo2 | Simrad nss9 evo2 | Simrad nss7 evo2 | Simrad evo2 | Simrad Nss12 | Simrad Nss8 | Simrad Nss7 | Simrad Nse8 | Simrad Nse12 | Sitex Colormax | Sitex GPS | JRC GPS  | Car GPS | Automobile GPS | Garmin Nuvi | Garmin GPSMAP | Spot Tracker | Navionics Chart | Cmap Chart | Furuno FCV587 Fishfinder | Furuno FCV627 Fishfinder | Furuno gp1870f | Furuno gp1670f | Furuno BBDS1 | Furuno FCV295 Fish Finder | Furuno FCV1150 Fishfinder | Furuno DFF1 Sounder | Furuno Sonar | Furuno Searchlight | Trolling Motor | Minn Kota Trolling Motor | Motorguide Trolling Motor | Downrigger | Cannon Downrigger | Scotty Downrigger | Big Jon Downrigger | Outrigger | Lee Outrigger | Taco Outrigger | Seaview Mount | Scanstrut | Radar Mount | Marine TV | Boat Stereo | Marine Stereo | Marine Audio | Boat Audio | Fusion Stereo | Marine Electronics | Underwater Light | Oceanled Underwater Light | Wind Meter | Boat Instrument | Boat Wind Gauges | Boat Depth Gauges | Boat Fuel Meter | Floscan Meter | Marine Camera | Raymarine Instrument | Simrad Is20 | Raymarine ST60 | Raymarine i40 | Raymarine i50 | Raymarine i60 | Raymarine i70 | Furuno TZT9 | Furuno 1835 | Furuno 1945 | Furuno 1935 | Furuno TZT14 | Furuno 1715 Radar | Furuno 1623 Radar | Furuno 1834C Radar | Furuno 1824C Radar | Furuno 1934C Radar | Furuno 1944C Radar | Garmin GMR18 Radar | Garmin GMR24 Radar | Simrad 3G Radar | Simrad 4G Radar | Lowrance 3G Radar | Lowrance 4G Radar | Nobeltec Radar | Raymarine RD418D Radar | Raymarine RD424D Radar | JRC Radar | Boat Wiper | Katadyn Watermaker | Liferaft | Life Raft | ACR Globalfix | Boat Toilet | Raritan Toilet | Boat Water Heater | Boat Water Pump | Jabsco Pump | Johnson Pump | Shurflo Pump | Rebuilt Chartplotter | Remanufactured Chartplotter | Used Chartplotter

                Marine Electronics, Fish Finder, Boat Part, Inverter Store

To speak to someone about your Marine Supply or  Boating Equipment right now,
just call toll free
1-877-330-9758. We will be happy to answer immediate questions about our boating equipment and marine supply.

You can also email ask@wmjmarine.com  

Thank you for visiting WMJ Marine for your boating equipment and marine supply !


If you have any question, please let us know at ask@wmjmarine.com
We respond to your email within Hours. or Leave us a message at Toll Free (877)330-9758
or Fax at (501)631-4759




Home | Anchor & Docking | Boating Accessories | Boat Engine Parts | Boat Furniture | Cabin & Galley & Deck | Communication | Electrical Supply | Fishfinder & Sonar | Fishing & Hunting | GPS & Chartplotter | Marine Autopilot | Marine Electronics | Marine Instrument | Marine Radar | Marine Safety | Navigation Tool | Plumbing & Pump | Steering & Engine Control | Trailers Parts | Specials | Remanufactured | How To Order | Contact Us | Government Order
Our Company Policy | Privacy Policy | Shopping Cart

Marine Supply Specialist, USA - WMJ Marine Corporation

Copy Right: WMJ Marine Corporation 2004-2014