3000 watt inverter

[JTGuy]

Is is possible to use a 3000 watt inverter only when the engine is running? I want to mount one for dog dryer use. Very close to the battery and not used for long times. A 3000 watt inverter will pull about 165 amps offf the battery when the blower is in use.

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[ShadowsPapa]

Is is possible to use a 3000 watt inverter only when the engine is running? I want to mount one for dog dryer use. Very close to the battery and not used for long times. A 3000 watt inverter will pull about 165 amps offf the battery when the blower is in use.

3,000 watts / 13 volts = 230 amps

Not sure where you got the 165. That would be at 18 volts.

I'd only ever do that with the engine running and at a fast idle - meaning use tazer or jscan to boost idle speed
Otherwise you will be drawing the battery down a lot - and more than it will recover just be ordinary driving.
Not so sure I'd do that. I'd probably mount a lithium battery in the back somewhere, and use a DC/DC charger to charge that battery and leave the jeep battery alone.

 

[JTGuy]

My usual max load will be about 2000 watts. That way I don't max load the inverter.

 

[Bandit’s Lair]

While you CAN do that, it’s probably safer to run something like a portable power station with the output you’re looking for. That would give you a multi-use option as well. A sustained 2kw load is pretty big to be throwing at a regular vehicle battery. While it can do it, it’s really not designed to.

 

[JTGuy]

I know that our systems are very sensitive but a winch does the same kind of load.

 

[ShadowsPapa]

I know that our systems are very sensitive but a winch does the same kind of load.

There's the winch duty cycle as well, and if you can and are clever about it, you have it running at a FAST idle, like 1400-1800 RPM.
It's only for a few seconds at a time, not 60 seconds of continuous load at full power.

You must have a heavy-duty industrial dryer as most are limited to 1500 watts due to most outlets only handling 15 amps TOPS. Use a 2,000 watt dryer in most homes, you'll have some problems somewhere

 

[Bandit’s Lair]

I know that our systems are very sensitive but a winch does the same kind of load.

True but you said you’re going to be running a dog dryer(?) on it. That will be a more sustained load than running a winch I believe. Especially if the dryer has a heating function which will supply an initial surge then a sustained power flow.
I’ve built a few back up power systems with 3kw 12V inverters. I won’t use less than a 300Ah battery for those because the draw at 12V is fairly significant. 24 or 48V you can get away with a little less battery power but I don’t recommend for 12V usage.

 

[JTGuy]

The dryer is blow only. Blows the water out of the coat. Works great on the Jeep interior also. On high its about 16-1800 watts.

 

[bgott]

Gasoline powered leaf blower.

 

[ShadowsPapa]

The dryer is blow only. Blows the water out of the coat. Works great on the Jeep interior also. On high its about 16-1800 watts.

Over the rating of household outlets...............

Again, you can do it, but you are talking longer use, deeper drain on a more constant schedule than most ever use winches.
Winches aren't used several times a week (well, for most anyway), maybe not even several times a month.
Don't expect the charging system to keep up, your batteries will need some help recovering and the more you cycle them, the faster they lose capacity and life. An occasional winch use is just that - a withdrawal now and then, rarely, not every day, every week.

 

[nanook12]

I know that our systems are very sensitive but a winch does the same kind of load.

the winch isn’t using an inverter. 12 to 12v
I’d use a solar gen, you can keep it charged up off the onboard 12v or inverter (if you have one, mine came with a 400w). You’ll need a larger model - Bigger inverter model. My Goal Zero 4000, has a 3600W inverter

 

[ShadowsPapa]

the winch isn’t using an inverter. 12 to 12v
I’d use a solar gen, you can keep it charged up off the onboard 12v or inverter (if you have one, mine came with a 400w). You’ll need a larger model - Bigger inverter model. My Goal Zero 4000, has a 3600W inverter

Good point often overlooked.
The blower may use 1800 watts, but due to heat, conversion loss and so on, the load to the battery will be higher

 

[Dave D]

Your going to need some serious heavy gauge wire for that. Try and keep it close to the battery.
I would run a seperate battery for that kind of load.

 

[Bandit’s Lair]

The 2/0 from HF is sufficient for running a load of that nature off a 3kw Jupiter inverter. I’ve run fridges and a portable AC in the garage for the cat during a power outage using it and it didn’t get too hot for my comfort.

 

[Jrgunn5150]

I have 3k inverters in my Ram and Gladiator, they both work fine for running coffee pots, blow driers, and charging power stations.

I'm certain I never, ever come close to maxing them.

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