Question 1

Why so expensive? can't you get a 750w inverter from harbor freight for 50$?? also, how big inverter needed to run typical house fridge?

Accepted Answer

I have a large LG fridge with french doors etc. I may be wrong but I believe this is the largest residential not professional restaurant size model. ANd inside the fridge is a plate that says it requires 350 watts. I ran it all day during a recent power outage in my town with a 1000 watt Bluetti power station. I am pretty sure the 700 watt could handle it and have enough power to plug in an led desklamp after dark.  Interestingly the label on the bottom gives all kind of specs but doesn't say where it was built. (I think like most of them it was made in China.) Nice light unit, but I like my 2000 watt better but it needs at least 200 Ah battery power to run it. This one does fine on the little 50Ah battery Renogy offers.

Question 2

do I need a fuse protector?

Accepted Answer

You will definitely want one. It doesn’t come with power leads nor a fuse. It’s a 3kw with a 6kw peak inverter, simple math (6,000/12v=500A) so I have a double 250A fuse (in parallel) over 1/0 leads (8’ away from the battery bank). You can try to play it safe and go with a 300A fuse, but if it surges when starting up a large draw, you could blow it. Or contact the manufacturer to follow their recommendations. I look at as the fuse is protecting the rest of my system from the inverter if it fails.

Question 3

Can this inverter be tied into the control panel so all outlets work in a travel trailer?

Accepted Answer

Designed for hardwired outlets..but try to ground it (the inverter unit itself with 8-10 AWG wire) to the chassis as safety**and frequency noise for tv and sound systems may benefit.

Question 4

Why is this a converter when it's converting 12v dc to 110v ac?

Accepted Answer

I teach electronics. 
We teach that if you are DC-DC it is a converter. If it is AC-DC or DC-AC it is an inverter.
HERE'S WHY:
In DC-DC you are converting one voltage to another while changing the amount of current available.  Convert 12VDC to 24VDC and you get 24VDC at 1/2 the current. Convert 24VDC to 12VDC and yo get 12 VDC at twice the current...... assuming zero loses which there will be some losses. The ONLY thing required is a transformer with the correct turns ratio for the desired output from the available input.

INVERTING AC to DC or DC to AC is a more complicated process and is especially so when attempting to create a true sign wave AC signal from DC.

ASIN	B096MKPQ1M
Antenna Location	Off-grid, Solar Power, Outdoor, Camping, Home, Vehicle, RV, Truck, Trailer, Boat, Van, Workshop
Battery Capacity	3000
Best Sellers Rank	#5,949 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #5 in Solar & Wind Power Inverters
Brand	Renogy
Built-In Media	3000W 12V Pure Sine Wave Inverter, Instruction Manual, Remote Control
Color	Black
Customer Reviews	4.3 4.3 out of 5 stars (4,706)
Display Type	LED
Electrical Output Waveform	Pure Sine Wave
Energy Specifications Met	Etl certified
Frequency	60 Hz
Input Voltage	12 Volts (DC)
Inverter Capacity Volt-Amp	3000
Item Dimensions L x W x H	18.9"L x 9"W x 4"H
Item Weight	12.5 Pounds
Manufacturer	Renogy
Mfr Part Number	RNG-INVT-3000-12V-P2-US
Model Name	RNG-INVT-3000-12V-P2-US
Model Number	RNG-INVT-3000-12V-P2-US
Number of Outlets	3
Output Power	3000 Watts
Output Voltage	120 Volts (AC)
Peak Output Power Watts	6000
Power Source	Solar and Battery Powered
Standby Power Shutoff	90%
Surge Protection Rating	6000 Watts
UPC	810009718789
Unit Count	1.0 Count
Voltage	12 Volts (DC)
Warranty Description	1 year manufacturer
Wattage	3000 watts

Inverter P2 3000W Pure Sine Wave Inverter 12V DC to 120V AC Converter for Home, RV, Truck, Camping, Trailer, with Wired Remote Controller, Support Li, AGM, SLD, GEL, FLD Batteries

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