How to Determine Correct DC to AC Inverter Power Rating for 800-Watt Load

Question

Question:

I have a 800 watt power inverter powering a 1/4 hp motor, running a knife sharpening machine, off my 12v auto battery. It is beeping. Is this a sign the inverter is not giving enough power? Or is the battery the wrong battery for the application? I have a 2010 Honda Odyssey EX. 800 watt inverter Cobra powering, HP 1/4 motor, HZ 60, V 115, A 5.3, SFA 5.9, SF 1.35 Any help your can give me is much appreciated.

asked by: Richard S

1

Helpful Expert Reply:

It is never an ideal situation to use a device continually at its absolute maximum capacity. Since you are powering an 800-watt motor with an 800-watt inverter it is definitely being strained and that is the cause for the inverter's alarm.

Ideally your inverter will have much more capacity than the connected device requires. It is definitely not a good idea to use an 800-watt inverter with an 800-watt device. All devices will draw more peak power than their continuous rating suggests.

The 1000-watt Wagan Power Inverter # WC3720 can deliver 1000 continuous watts so this unit will give you some safety margin.

expert reply by: Adam R

1

Answer 1

You'd have to have the 6 volts wired in series to double their voltage so that Power Inverter 1000 Watts with Three AC Receptacles #WC3720 can be connected to it. I attached a diagram that shows how to do this.

view full answer...

Answer 2

For charging a battery it is generally recommended to use a pure sine wave charger instead of a modified wave charger/inverter for the best charge although there's plenty of people online who will say it's no big deal either way. The part…

view full answer...

Answer 3

The Power Inverter, #WC3720, comes with two 6-gauge wires with ring terminals and alligator clamps. They are only a few feet long. This inverter can be hard wired and the proper gauge will depend on how long you plan to run the wires. For example, if…

view full answer...

Answer 4

In order to determine the length of time that an automotive battery will last when using an inverter pulling 1,500 watts of power, you will need to know the amp hours of the battery that you plan to use. For that much wattage though I can't…

view full answer...

Answer 5

To charge the battery while the boat is running you would need to install solar panels which depending on your boat might not be an option. Typically most people run multiple batteries in parallel to run their appliances/equipment. Since you'll…

view full answer...

Answer 6

The difference between the Class II and Class III hitches has to do with their Gross Trailer Weight (GTW), their Tongue Weight (TW), and their Hitch Receiver Size. Class II trailer hitch receivers have a 1-1/4 inch receiver and can be rated up to…

view full answer...

Answer 7

In order to determine the torque rating for the lug nuts on your trailer you will need to know check out the chart I attached that shows all of the torque specs for all the trailer lugs available based on stud size, wheel material and wheel size.

view full answer...

Answer 8

The difference between an load range C and load range D tire in the same size is the capacity and psi rating. The two tires will still have the same dimensions and fit on the same wheel. The D rated tire has a higher capacity. For a ST175/80D13 like…

view full answer...

Answer 9

Trailer wheel bearings are specific to the spindle that is installed on the axle that is on your trailer. You will need to safely support the trailer, remove the wheel and tire, remove the grease cap, remove the cotter pin and washer that secures the…

view full answer...

Answer 10

A 4-Way trailer connector has the basic lighting functions only; running lights, left turn signal and brake lights, right turn signal and brake lights, and ground. A 7-Way has these functions and a 12 volt circuit, a circuit for electric trailer…

view full answer...

Answer 11

The 5.30-12 tires, being wider, are going to make more contact with the road. This means that the noise, and heat build up will be higher than a 4.80-12 tire but the rolling resistance will actually be less because the tire is larger diameter. The…

view full answer...

Answer 12

Load range B trailer tires are going to have a lower capacity than C load range tires. Basically that, psi rating, and the ply rating are the only differences. A higher load range tire would last a little longer than lower load ranges of the same…

view full answer...

How to Determine Correct DC to AC Inverter Power Rating for 800-Watt Load

Product Page this Question was Asked From

Featured Help Information

Miscellaneous Media

Continue Researching