Pure sine wave inverter suggestions?

Geewizard wrote:

2112 wrote:

Geewizard wrote:
I need to charge an electric dirt bike. Its charger is AC only and I will pay the extra for a pure sine wave inverter. I had a MSW inverter for my microwave and it really did not like the MSW.

My CPAP runs from 12VDC.

Thanks all.

Why not just boost the DC with something like THIS? There is a lot of loss converting DC to AC then back to DC

That's an interesting product. Thanks, I'll look into it.

What do you think that thing is?
DC to DC chargers are inverters with converters in the same unit.

As far as wire size goes, that has to do with length as well. Without knowing how far the run is from the inverter to the battery, it’s hard to say what wire size is appropriate.

Pure vs Modified used to have a lot do with price, but as cheap as the PSW’s are, I can’t see a lot of reason to buy a MSW right now. That being said, I think some devices like a cell phone charger or voltage adapter on a TV probably won’t care since they just step down the voltage and convert AC to DC.

I have been looking for the same...It's hard to overlook the GoWise and the Kinverch (Potek)1000W,both under $150..

2112 wrote:

Geewizard wrote:
I need to charge an electric dirt bike. Its charger is AC only and I will pay the extra for a pure sine wave inverter. I had a MSW inverter for my microwave and it really did not like the MSW.

My CPAP runs from 12VDC.

Thanks all.

Why not just boost the DC with something like THIS? There is a lot of loss converting DC to AC then back to DC

That's an interesting product. Thanks, I'll look into it.

3 tons wrote:

naturist wrote:
8 gauge wire seems too small for the 500 amps draw of a 6,000 watt inverter. And yes, I think you lucked out not needing electric blankets.

X 2 !!

I always strive for 2% or less voltage drop under max load. At 2% I'd be limited to 5ft. of 4/0 cable with a 500a load. FWIW, 4/0 cable is nearly 13 times larger than an 8 gauge wire.

naturist wrote:
I have a 2200 watt Giandel PSW inverter that works well. 3 year warranty, only 8-9 watts when idling.

Lot of folks overlook parasitic/no-load/idling current specs when choosing an inverter. Some inverters with high parasitic current can discharge a battery in just 12-24 hours with no load.

Lwiddis wrote:
Too risky to use a MSW on electronic equipment.

Agree. MSW can can silently wreak havoc on some electronic devices. It's like using improper oil in an engine. At first everything seems fine . . .

Geewizard wrote:
I need to charge an electric dirt bike. Its charger is AC only and I will pay the extra for a pure sine wave inverter. I had a MSW inverter for my microwave and it really did not like the MSW.

My CPAP runs from 12VDC.

Thanks all.

Why not just boost the DC with something like THIS? There is a lot of loss converting DC to AC then back to DC

naturist wrote:
8 gauge wire seems too small for the 500 amps draw of a 6,000 watt inverter. And yes, I think you lucked out not needing electric blankets.

X 2 !!

Kayteg1 wrote:
So once again, 20 years of using inverters in RVs and modified wave was never an issue. That include electronic controls on microwave ovens, AC, toaster, laptops, cellphones.
Did not use mentioned electric blankets, so maybe I luckied here.
Right now I have 2 inverters to choose in my latest project.
The pure sine inverter sounds good, but the cheap model I bought is rated for 6000 W peak, yet I measured internal wiring and included 2' supply cable to be #8 gauge.
So I am on the fence of using proven modified or newer gizmo with unknown reliability.

Yes, I think you have been lucky !

There have been multiple tests on YouTube showing that PSW actually perform better than MSW. Simple tests. Boil a cup of water in a microwave. PSW does it faster and consume less power from the battery bank. Check the case temperature of a residential refrigerator running on PSW vs MSW. Lower temp and less power consumption.

The unknow brands have NO reputation to up hold. If sales drop off, they just slap a different label on the outside.

Example 4000W Off-Grid PURE SINE WAVE Power Inverter? Let's Find Out! Spoiler - Conclusion was MAYBE 1000W continuous !