Predator 9500 Home Built 240V Parallel Kit Test & Build Parts: 2X Output Power Using Two Generators!

I built a parallel kit for the Harbor Freight Predator 9500 Inverter Generator. This allows you to use two generators at the same time, doubling your output power. THIS IS MERELY WHAT I BUILT AND MADE WORK... PLAY WITH HIGH AMPERAGE ELECTRICITY AT YOUR OWN RISK.

Technical details about the generators (how they're wired, how the parallel kit is wired, break in warnings, power quality readings on an oscilloscope, etc.) may be found on my "All the Technical Tidbits in Under Ten Minutes" video here:

The following parts links should be for Amazon Smile charity links, if you use them a portion of the normal purchase price will go to a local community band (Band of the Hills) with which I participate.

PowerHorse Parallel Kit (you will have to shave the corners of the white neutral, but fits great):

Small 50 Amp Box I used (very tight space)

Splice Kit to link your purchased cable to the parallel plugs:

8 Gauge Wire (black). You'll also need White, Red, and Green

Terminal Block to combine wiring (4 screw)

Terminal Block to combine wiring (3 screw)

Nylon Braided Sleeve:

Digital Amp/Voltage/Frequency Meter

The following is a link to the full playlist of the video series on these generators, there are now (5),
All The Technical Tidbits
Home Built Parallel Kit
Generator Power vs. Line Power
Easy Start by MicroAir to let a portable generator run your central AC
How To Connect A Generator To Your Home

Hope this helps people!

[GalloPazzesco]

Have I commented yet? If not, subscribed, bell rang, commented, liked, upvoted, shared .... may the algorithm gods smile favorably upon your channel.

[braydon]

This video should have 1 million views. This is awesome and I love the ingenuity! I want to buy 2 of these generators as well for portable home backup during power outage. I figure its more flexible, efficient and quieter(maybe?) than 1 big(15k running watt) conventional open one. but have been waiting for the parallel kit to come out. I have a 3.5ton AC and figure if I buy a soft start kit I should be able to run my entire house with 2 of these. now you got me thinking if I want to buy them and attempt the same thing or just wait for parallel to come out. Cheers!

[marcsmith]

Thanks for uploading this. I just bought two Predator 9500s for my food truck instead of paying $10k for two Honda EU700IS generators with their parallel kit. Harbor Freight was no help with finding a parallel kit. Just ordered all the parts to make it.

[dirteharry]

Great video Jason! I would love to see how you wired the box in detail especially with the 2 Amp meters wiring detail where you join the two generators with the 50amp outlet.

[texaslawdawg]

Great job. Our recent Texas winter was brutal. I have my eye on one of these if my ES6500 ever dies (doubt it).

[kevinpeavy]

Great stuff Jason! I pretty much was sold on a parallel predator setup for my home so I designed a similar build in my head. Figured I wasn’t the 1st so got on you tube and found your video and as a technician myself, I was impressed. Thanks for the content! If you wouldn’t mind can you share your ruff cost for the project?

[rcinfla]

You go with #6-4 SOOW cord for the combined main feed. It is much more flexible. Also a good idea to put a dual 240V breaker 60A in combiner box.

[MrRChitty]

Nice job! I can see why you would need two of these generators if you wanted to run your AC unit and etc in the home at the same time. Looks like at the minimum, 5, 000 dollars. You have the option of running 1 if you don't need the AC.

[barrthom]

Jason your video is incredible. Thank you for doing this! Do you think HF, or Predator will make a parallel kit at some point for the 9500s? I want to just buy something made and ready to hook up to house.

[xzibit]

I believe you can also use the Honda EU7000is parallel kit as well.

If you want more flex you can use 6 AWG welding wire. It’s stranded pretty well.

You can power down one generator and should still work if you notice your loads are low, to save fuel right?

[baronhall]

Other youtubers have confirmed that the 30A 240v outlet on the generator is tied to the sync circuit, which means you don't really need the parallel cable kit. You can use the L14-30P connector that comes with each generator and some stranded 10/3, with ground, to make your own patch cables up to 50 feet each leg (between each generator and the combiner box). Only real thing to note however is that with the L14 connectors, the conductors will be exposed if not plugged in - dangerous if any of the other ends are connected to power, whereas the kit has shielded connectors.

For your setup, where the generators are right next to each other, the parallel kit is probably the least expensive option however.

[southernoutdoors]

Great video I had my electrician put the cut off main power switch and the ability to connect my predator 9500 to the breaker box like you are using so everything works great I have gas water heater and heat stove etc we tried to run the AC and it shut off the generator he told me it’s all about amps!! I am going to have to get the soft start and another 9500 the 240 plug on the 9500 is only a 30 amp do you know what that does in parallel I am no electrician but I have learned a lot during this process I priced a generac 22kw natural gas and that’s what I wanted but because my gas meter and power meter on 2 different sides it was gonna be very expensive I am hoping the parallel and the soft start will run my whole house or I am out money and will have to get the generac any hep from you or others will be a huge blessing and thank you for making this I learned a lot just watching

[nicholasavery]

Haha F black outs
I have the 4375 predator I’m trying to hook mine up parallel now and found your video for reference good work

[diecastmodelhub]

Awesome! I have to do this for my food truck! My thoughts were wiring them directly into a breaker panel. Thoughts?

[vbritt]

This is really cool... What would happen however if 1 generator shut down or ran out of fuel? Is there overload protection that would shut down the other Generator?

[banhvo]

Love your video, before parallel, did you change to floating neutral before connecting to inlet box?

[stelon]

Great video Jason! I have a Duromax 9000ih (turned into floating neutral after disconnecting the bonding connection behind the control panel) dedicated exclusively to power feed the house in the event of any power loss. Power to the house is through a Reliance 50amp power inlet box. No transfer switch, instead I took the Interlock route and installed it at the main outside panel. I'll be ordering a Genmax 9000 soon, which I will be paralleling with my Duromax. My plan is to turn the Genmax into a floating neutral too. Both generators will be grounded at the main house panel. Now my question is, since both will be floating neutral generators, and there is no white neutral parallel connection in the Duromax, how would you handle the parallel wire connections on each generator? Duromax (two hot wires parallel connected / green and white disconnected) and on Genmax (two hot wires and white wire parallel connected / green disconnected)? Thank you again for the great videos!!!

[JP-psut]

Thanks for the info. I just learned about the easy start and my customers are wanting it and I am doing all the research I can. I am interested on the EATON inlet box with power quality meters. Where did you find that or did you add this yourself? Thanks

[detchordV]

@jasonwallace Thanks for bangin this out. Exactly what I was looking for and uber helpful. My question is how did you wire the two voltage monitors? I see they have a positive and negative terminal to power the meters, apart from the donut. Just wondering how you ran those jumpers to power the meters. Thx dude!

[browsedeweb]

Does your 5-ton HVAC system use a TXV to regulate the refrigerant pressure? My 4-ton system has a TXV and an EasyStart installed but according to the company, I won't realize the full reduction in starting amps due to the TXV keeping residual head pressure on the compressor each time it kicks off. Increasing the SCPT delay time from 3 minutes to 8 minutes using the bluetooth app helped a bit though.

My single Honda EU7000is will run my whole house, except for the 4-ton HVAC. I also converted it to run on natural gas, propane or gasoline...so I don't have to worry about storing gasoline any longer.