I had a 2 HP motor on an 16 Ton electric Ramsplitter years ago. I ordered that because it was the biggest I could get and still run off a standard 120V outlet (it did need to be on a 20 amp breaker. 15 amp Breakers would trip occasionally.) I only had one easily accessible 240 volt outlet, but wanted the splitter to be more portable than that, so went with a 120V model.
At the time, they sold the same splitter in a version with a 5 or 6 HP gas engine that had indentical specs. (They have since switched to a 1.5 HP motor on their 16 ton electric splitter.)
It worked pretty well. I was surprised what a 16 ton splitter could handle. Pieces that were too big or gnarly for it, I just left for the bonfire pile or split with a chainsaw. I ended up selling it and getting a gas powered splitter, since I wanted to be able to split in the woods without bringing a generator with me.
I mention this not to suggest the Ramsplitter brand, just to demonstrate the difference in HP required for a gas vs electric powered splitter. If you are going 240V, you'll be able to go to higher HP motors, but no need to match the HP rating of the gas engine you are replacing.
I do like the portability of the gas splitter also. I made another shed for mine, using a garbage-picked truck cap for a roof, out on the creek bank by my bucking wagon.
I think the splitter I have is around 20 ton with a 5 hp Honda. It’s got to be at least 20 years old and has never given me any trouble. All I’ve done for maintenance is change the oil once a year and I always use ethanol-free gas.
When I use it vertical, I roll the big rounds onto it and sit on a chair while operating. I use it horizontal for the small stuff, never really needing to lift much because it is at the same height as my bucking trailer. I throw the split stuff into my tractor bucket or 3-point carryall (from either location) for transport to the woodshed.
For unloading the woodshed, I hand carry the wood across the lawn to the house porch (if the ground in between is froze which it didn’t this winter), or transport up the driveways with my tractor bucket.
That’s what I had to do all this winter. Hauling that wood was the main job for my larger tractor all winter so far because most of the snowfall we got was so light that I could easily handle it with my 10 hp Farmall Cub.
I imagine we are going to get blasted with one more heavy snow yet this winter because I’m going to take the blade off the back of my larger tractor and move my bush hog over to the side porch this weekend.
If I get that bush hog and my 2-row corn planter (I’m going to tuck that into the cleared out west end of the woodshed) out of the barn back porch, then I can get the wall built across that end.
It’s too wet to start any field work yet but I can knock off most of the building projects.