Looking at a generator (WEN 56225i 2250-Watt Portable Inverter Generator), with 1800w rated watts. The most heavy usage will likely be running a circular saw - which is 15a and 120w. Im not proficent with power draws, but im assuming this means the saw draws 1800w (15 x 120)?
Or do tools run at a lower wattage? Because if its drawing 1800w, thats putting the generator at 100% draw. While some sites are saying a 1800w rated generator will run it no problem. Which is correct?
Im also reading how saws draw like 2400w at start, then level out. This would exceed the generator rating would this damage it?
Circular saws and other power tools have a much higher initial draw (starting wattage) than their running draw -- anywhere from two to three times more. Most of them clock in around 2400 W to start.
Hate to be that guy but…
Most of those kinds of generators are for secondary use tools or get me through the day radio type of shit. Even a low start draw saw is gonna make it into a really shitty cordless battery, quickly.
If the coils of the dynamo are pretty much directly connected to the ac outlets, as in the generators we use in construction, then those are gonna be pretty robust.
This thing looks like a fricking jackery though, so it’s probably for running your xbox when you’re camping. What’s with that star trek control panel? It needs one or two outlets… that’s it.
For a skilsaw it doesn’t have to be any of that “pure sine” shit either (although that’s what a simple dynamo will create naturally) and it doesn’t need to be that close to 60Hz either.
>star trek control panel
starting switch
on off switch
circuit breaker
2 usb ports
2 outlets
auto-idle switch
parallel connector
ground stud
>If the coils of the dynamo are pretty much directly connected to the ac outlets,
It says on the side of the generator, INVERTER GENERATOR
The power head powers the inverter which supplies power to the outlets.
> if the coils are connected directly to the output
I haven't heard it phrased that way, but duh me, that's exactly how the type of generator you described, works. I've called them 'worksite generators.'
Those worksite generators 1865 mentioned, are what you need. The downside is they run at a constant minimum power output. At 'idle' - when you're not loading them, you're wasting about half their rated power output. That also makes them louder than inverter generators, where the e.g. Harbor Freight ultra quite inverter generator, you cannot hear at idle.
It also makes them use more gas. A 4kw-5kw worksite, a constant-speed (direct coil-output) generator, would be about the sweet spot for running a continuous 15A (1800w) load. Figure with current Burger gas prices, your price per kwh is $1.00, which is why for intermittent saw use, with a high initial draw, you want to look at getting one of the higher-wattage inverter generators to handle it. They can handle a single induction (motor) load pretty-well. I think HF has a 3700w ultra quiet, for reference. I'm sure WEN does too.
A 3700 inverter probably has a 5kw peak for inductive load starting, and a preferred maximum continuous output of 3200w, but practically you want that around 25-30% of the rated output, for noise, fuel consumption, and longevity. An 1800w saw, is more than 25%. If it's the only load of significance you are running, and assuming it's not running continuously, but instead on and off throughout the day, that gives the generator time to cool down.
spend the money and get a 3500 or 4500 watt generator. you'll end up wanting one anyways sooner or later.
Lithium battery packs sure are compact compared to an extrension cord, let alone an entire generator
> lithium is better.
To run that load, OP needs 48v*200ah for 5 hrs runtime, and to handle the surge using a typical BMS. Plus an inverter. That's over $3000, and about 250lbs. DavidPoz did a build that was cheaper, less than $2000 using used batteries, but the generator can be had for $1,000, or less if it's not an inverter style.
Yeah dude circulars aren’t running contantly like that unless you’re trying to run a damn sawmill. And if that’s what OP is trying to do, he should build it on a river with a water wheel and get certified Green(tm).
Also what other anon mentioned is true, you’re burning gas while the generator is running while you do the 95%+ that is measuring and fitting and fastening and not actually putting a blade through a board.
> namegay
Maybe you should pay for it, then?
>namegay
no one cares dipshit
apparently you do. who's the 'dipshit' now? M sorry your parents were so moronic, but that's not on me. That's for you to figure out, little man.
Kek. This place is such a shithole
>This place is such a shithole
I have to congratulate you. You have spent years shitting here and it has paid off.
Oh it has been a shithole long before I shitted it up.
>little man
I bet I'm old enough to be your father...
describe your mother.
>apparently you do
oooh so close. you almost had an insult there. maybe if this was kindergarten that might have meant something.
how to say "I've never worked with lithium ion batteries on a large scale", without saying it.
how to say "I've never worked with them new fancy voodoo brushless 8.ought wood cutters", without saying it.
If OP was rippin stuff on a table saw a bunch and then goin to the miter saw, then one of those 3.5kW generators would probably be my reply.
op will always need more power, no one ever went to a job site and said "gosh if only I had less power". skippy