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  1. RV Inverters
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Go Power Industrial Pure Sine Wave Inverter - 3,000 Watt - 12V

Go Power Industrial Pure Sine Wave Inverter - 3,000 Watt - 12V

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3,000-Watt inverter lets you use appliances and devices wherever the road takes you. Pure sine wave technology is perfect for sensitive electronics like HDTVs and computers. Changes your RV battery's DC output into clean AC power. Great Prices for the best rv inverters from Go Power. Go Power Industrial Pure Sine Wave Inverter - 3,000 Watt - 12V part number 34278157 can be ordered online at or call 1-800-940-8924 for expert service.
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  • Reviews (120)
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Go Power RV Inverters

  • 3000 Watts
  • Pure Sine Wave Inverter
  • Inverter/Backup Power Functions
  • 12V
  • Go Power
  • Power Center
  • Industrial Duty - Large Loads

3,000-Watt inverter lets you use appliances and devices wherever the road takes you. Pure sine wave technology is perfect for sensitive electronics like HDTVs and computers. Changes your RV battery's DC output into clean AC power.


  • 3,000-Watt industrial inverter provides AC power for electronics and appliances
    • Changes your battery's DC output into AC power and sends it to the RV's electrical system
  • Pure sine wave technology replicates household AC power, allowing you to run devices safely
    • Perfect for sensitive electronics like HDTVs and computers
  • LED indicators show input voltage level, output load level, and fault conditions
  • Multiple connection points let you secure cables and external devices to the inverter
    • Includes hardwire AC output terminal, DC input terminals, and remote port
  • Built-in safety features protect your RV's electrical system
  • Fixed-mount remote (sold separately) lets you monitor and control the inverter inside your RV
  • Fuse block installation kit (sold separately) lets you safely connect the inverter to your RV battery


  • Application: 12V battery systems
  • Rated power:
    • Running (rated) power output: 3,000 watts
    • Starting (surge) power output: 6,000 watts
  • Voltage:
    • Maximum power: 12V DC
    • Input: 10.5 - 16.5 VDC
    • Output: 100 - 120 VAC
  • Temperature ranges:
    • Operating range: -4 F to 104 F
    • Storage range: -22 F to 158 F
  • Maximum wire gauge: 4/0 AWG
  • Dimensions: 17-3/8" long x 10-1/16" wide x 6-1/4" tall
  • Weight: 18.08 lbs
  • 2-Year warranty

pure sine wave inverter

This 12V inverter changes DC output from your RV batteries into AC power and sends it to the electrical system. Using pure sine wave technology, it creates clean power with low distortion, making it safe, efficient, and perfect for sensitive electronics like computers. Plus, the inverter can generate 6,000 starting watts and 3,000 running watts which is a great fit for larger appliances and electronics.

Functions and Features

outlets and terminals on inverter

The inverter includes a hardwire AC terminal for AC loads, positive and negative DC input terminals that connect to your batteries, and a port for a fixed-mount remote (sold separately). It has a function switch that lets you select different output voltages (100V, 110V, 115V, and 120V) and frequencies (50Hz and 60Hz). This switch can also turn the power saver on and off. Additionally, the power saving adjustment dial near the function switch sets the input and wake up thresholds for the power saver.

The system includes a number of safety features. It offers protection from over/under voltage, overloading, and overcurrent. The inverter also uses a heat sink process to protect from extreme temperatures, and an internal cooling fan removes excess heat from the unit.

fuse block

For additional safety, installing a fuse between the battery bank and the inverter will protect your equipment from power surges. The Go Power 400-amp fuse block (sold separately) works with this unit and uses a slow blow time-delay feature to withstand surge current. This means it can handle short surges over 400 amps without blowing the fuse, which is great for devices with motors that require more energy to start.

How It Installs

The inverter mounts inside your RV in a dry location with ventilation. It should be installed in close proximity to the battery bank, but not in the same compartment. The DC terminals are wired to the battery bank. There are several ways to connect the inverter to your RV's electrical system, but this will depend on your rig and how you want to use your inverter.

Available Fixed-Mount Remotes Provide Easy Monitoring and Control

There are 2 fixed-mount remotes (sold separately) that let you monitor and control the inverter from inside your RV.

GP-SWR-A inverter remote

For a simple, no-frills option, the Go Power GP-SWR-A Inverter Remote lets you turn your inverter on and off from inside your RV. It also has a LED which indicates the inverter's status.

GP-ISW-R-12 inverter remote

For additional features, the Go Power GP-ISW-R-12 Inverter Remote provides LED indicators that display the voltage, output power, inverter status, power saving mode status, and fault conditions. It also has a power button that controls the inverter.

GP-ISW3000-12 Go Power! Pure Sine Wave Power Inverter - RV Ready - 3000 Watt - 12 Volt

Item # 34278157

Installation Details 34278157 Installation instructions

Customer Satisfaction Score:

Customer Reviews

Go Power Industrial Pure Sine Wave Inverter - 3,000 Watt - 12V - 34278157

Average Customer Rating:  4.7 out of 5 stars   (120 Customer Reviews)

3,000-Watt inverter lets you use appliances and devices wherever the road takes you. Pure sine wave technology is perfect for sensitive electronics like HDTVs and computers. Changes your RV battery's DC output into clean AC power.


The inverter is working as expected, absolutely no problems. Would recommend it.


Good price, good delivery, nothing bad to say







One year + later, this inverter is great! I have it connected to two battleborn lithium batteries. We can run our TV although we don’t much, our Microware, or our coffee Kirin machine - of course not all at once. The fan is a bit noisy but it only fires up when drawing heavy from the inverter. Love it and recommend it.


Works great, the unit is powering a work shed in the backyard. The Inverter is paired up with 400w of solar and two battleborn 100a batteries. The unit replaced a 3000w inverter from another company that fried twice within a year.


This product is reliable and works well to the stated 400 watts when the load is steady. I like that this unit works well with my 29.4V DC battery pack (7S). Past 250 watts, even small surges will trip the unit off. At around 250 watts(steady) my quart compressor cooler will kill AC power out when it kicks on. It appears that the 600 watt surge rating is inaccurate.


I have this installed and the included remote does not work as described in the instructions. When not connected to shore power the remote shows the charger function on yet the instructions say this is not an option.

Also, I changed the power saver mode to 15 minutes from the default off. I didn’t see a change in the remote output after several hours.

Less than 10 days after I ordered this etrailer dropped the price $XXX.XX. That’s not insignificant and they wouldn’t do anything for me about it.


Inverter failed around the one year mark with light use. 1 star for that but 3 stars overall because of GoPowers customer service who provided a replacement without trouble.


Installed last year in a horse trailer with living quarters. Using with a pair of Dakota lithium batteries. Works great. Powers Microwave with ease. love the ability to pull from battery while also using generator; i can run both microwave and coffee maker together like this.

Points of note:
1) When inverter is turned on there is a quiet weird chirp occasionally. If you're a light sleeper sensitive to sounds, be prepared for a "what is that?" if it is installed in the LQ area.
2) If batteries are full and i plug in my Furman generator (Costco purchased from Costco), the generator gets tripped in to overload when float charging is enabled. Not an issue when charging batteries.


Product works designed. It was professionally installed along with instant hot water and 4 vmax tanks.


After 4 days of use this inverter easily does anything I need it to do, which is largely charging batteries when taking road trips. It handled my Dremel and 3/8 drill, as well. Didn’t try the grinder ?.

It’s well made with an all metal chassis, including front and rear faces – the only plastic is the black cover. It is substantial and heavy enough that it doesn’t look and feel cheap or breakable.

Overall, I like the unit and would recommend it.

My only strike against it is, IMO, a design flaw at Go Power. It is nuts to have the power connections on the back so close together. One of them should be located where the ground connector is. If one uses something more substantial than the #6 wire Go Power recommends and one should if the inverter is more than about 3 or 4ft from the battery. I am using #6 CABLE for a 9ft run. The plastic caps make it difficult to impossible to use lugs made for more substantial cable, but the proximity of one to the other makes it a safety concern to remove the caps. I had to file one lug more narrow to make it fit inside the plastic and left the other uncovered.


Everything went well. I’m very pleased with the service & Inverter.


I finally received my Go Power IC3000 after a nearly three-week delay. Unfortunately, I missed my window of opportunity to get it installed this year, so I am not able to complete a review of the product at this time. I can say, installation is going to be quite a challenge. The item is large and heavy. Finding a suitable location that meets all the requirements is going to be difficult. The batteries are located at the front of the trailer, while the AC lines are on the other side of the basement. Since the inverter cannot be located in the same area as the batteries, I'm not sure I am going to be able to reach everything and maintain the 10' maximum length requirement of the 0000 DC cable. We will see what happens next spring. I will post a follow-up review post-installation if possible.


We are currently working on hooking up the inverter we ordered from etrailer for the maiden voyage in our new trailer. It appeared these items would not be arriving before we left, but after a quick phone call to etrailer and a conversation with Steve Z. in customer service our inverter was on it's way by 10:00 am that morning. It did indeed arrive in 2 days giving us time to hook this up. We were thrilled as we wanted to put this trailer to work off the grid. Great service. Thank you so much.


Perfect to charge phones, computers, and other electronic items with off grid. And use my CPAP.


The inverter works very well. The only reason I gave it 3 stars is because the front of the unit is made with cheap plastic. The screws that hold the electric outlet in the front of the unit is embedded into the plastic. The plastic broke the first time I plugged into the outlet. I was leaving in two days to go on a trip to Utah so did not send it back. I voided the warranty by opening the unit, reinforced the outlet by sandwiching the plastic front in between two pieces of aluminum and used screws to hold the outlet in place. Since doing this, everything has worked flawlessly.

I would not buy this item again due to the plastic front.


Works as advertised. High quality unit. The fan as a little louder than I'd like, but not an issue. In fact it's very smooth running. I'm using it to power my TV and Blu-ray player in my camper when boon docking.


This unit is well built and ready for 50 amp pass thru. Comes with built in 50amp circuit breakers and Romex clamps. Installed on our 2019 Grand Design Momentum and so far works great. Recommend the remote panel. Bob at GoPower was awesome with customer service and helped me set all parameters for lithium batteries. Sarah at etrailer was great and had shipped out an hour after I ordered to make my need date. I highly recommend GoPower and etrailer.


Ordered Monday night at 6:30 pm and it showed up Thursday at noon with the free shipping option. Can’t beat that! Now I get to install over the weekend instead of waiting until the original arrival date of Monday. Will give 4 stars for now until it’s installed and working. Hefty unit at 50 lbs. install in my 2015 Amped 28FS looks like it will be very straight forward. Thanks etrailer for the quick shipping. Now I can’t wait to do some serious boondocking especially when my solar is installed and I can minimize the generator running!


I installed the GoPower 3000w inverter/charger in my fifth wheel trailer. I connected it with three 12v deep cycle flooded cell batteries and a sub panel to send 120v power to all outlets in the trailer. The automatic switch in the inverter has worked flawlessly. Perhaps the best part is the E-Trailer customer support. They answered my calls, actually speak English, and stayed with me until my questions were answered


Great product I thought I was receiving the fuse kit that came with it and I need it I would like to have one

Show More Reviews

See what our Experts say about this Go Power RV Inverters

  • Can the Go Power 3000w Pure Sine Wave Converter Be Used with AGM Batteries
    Yes.The Go Power # 34278157 will work with an AGM battery or any other type of battery that you want to use with it, including lithium ion. You won't need to change any of the settings and it's prepared to work right out of the box and will convert your battery's DC power into clean AC power.
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  • Can You Run a Washing Machine, TV and Vacuum on an Inverter
    The Go Power Industrial Pure Sine Wave Inverter # 34278156 has a running output of 2,000 watts. From what I could find researching running washing machines off of an inverter, it is going to depend on the machine and even whether you are using hot or cold water. If you are using cold water, the Go Power Industrial Pure Sine Wave Inverter # 34278156 paired with a 400 amp hour battery bank would likely do the job. But you may need to step it up to a 3,000 watt inverter like the Go Power...
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  • Troubleshooting Reverse Polarity Go Power Industrial Pure Sine Wave Inverter
    Somewhere in the system you have a hot side and a neutral line reversed. My suggestion is to take it back to the person you paid to install. But if you want to troubleshoot the installation of your Go Power Industrial Pure Sine Wave Inverter, # 34275013 yourself; start at the beginning of the circuit on your installation checking polarity at each connection point to discover where the inverted wiring issue is. You do not state how you identified that there is a reverse polarity issue...
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  • What is Amperage Output of 3000 Watt Inverter in 12 Volts
    A 3,000 watt inverter like the # 34278157 is rated for 250 amps at 12 volts in output.
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    Let's start with the transfer switch, and the Go Power Solar Flex Charging System - 220 Watt Solar Panels # 34272628 will need the Go Power Automatic Transfer Switch # 34264403 in order to automatically switch between shore power and an inverter that's being powered by solar charged batteries. So it will go between shore power and your converter to automatically switch. As for mounting it, Go Power does not have a recommended mounting system, they just say that the panels should be mounted...
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  • What Pure Sine Wave Inverter for 5th Wheel with Transfer Switch for Generator/Shore Power
    From what you have described as your goal, my suggestion is one of two primary options, and I will note here that with either option I suggest you have a battery bank of at least 400 AH when fully charged. This first option is not an automatic transfer switch option but I want to provide this to you for your additional knowledge because it is rather straight forward for installation and a little less cost as well. Option 1: The most straight forward installation to provide you an output...
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  • How To Determine How Long A Battery Will Last When Powering A Portable Fridge
    Watts divided by volts equals amps, so 65 watts divided by 12 volts is going to equal 5.42 amps. Your battery should have an amp hour rating that you can divide by 5.42 amps and then you'll know exactly how long the battery can maintain the draw from the fridge. For example, the Go Power Lithium RV Battery # 34282738 has a 100 amp hour rating so you would get 18.45 hours out of the battery. That being said a fridge isn't going to constantly be running and depending on the climate you...
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  • Can the Progressive Dynamics Pure Sine Wave Inverter PD64FR Be Wired Without the Transfer Switch
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    13,500 BTU AC units like the Advent part # ACM135C require 1,450 watts so the 3,000 watt inverter part # 34278157 that you referenced would easily cover that. Given the very specific limitations of your situation this would be the best solution overall. A solar panel kit might help too though like with the Go Power part # 34272628 which can provide 220 watts to help charge the batteries.
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    Per discussion with Redarc, until the Redarc USA Inverters are available, there are currently two options in the Go Power product line that are compatible with the Redarc RedVision VMS, Vehicle Management System, # RED89FR. They are the 12V Go Power Industrial Pure Sine Wave Inverter with GFCI in 2,000 Watt, # 34278156 and the Go Power 3,000 Watt version, # 34278157. These inverters will allow the RedVision system to control the on/off function of the inverter.
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Info for this part was:

Employee Jeff D
Installed by:
Jeff D
Employee Jameson C
Expert Research:
Jameson C
Employee Wilson B
Updated by:
Wilson B
Employee Alex H
Updated by:
Alex H
Employee Noah M
Updated by:
Noah M
Employee Amanda M
Edited by:
Amanda M
Employee Halie H
Written by:
Halie H

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