Board Thread:Off-topic discussion/@comment-26887977-20180720000448/@comment-27306930-20180721042629

Pedroh1999 wrote: Is there any way to calculate how many amps the blaster needs to work? So here's how that works. Unlike voltage, there's no such thing as supplying "too much" amperage. Every device, whether it's a motor, a light, or a heating element, wants to use (aka "draw") a certain amount of current at any given time. A motor for instance, wants to draw a lot of current while it's starting up, then very little once it's at max speed. If you put a load on that motor, it's going to want to momentarily draw more current.

Think of it like pushing your car down the road when you've run out of gas. It takes a tremendous effort to get the car rolling forward. But once it has forward movement, you can keep it going relatively easily. When you get to a hill, it again takes a huge effort to keep it rolling forward. But when you get to the top of the hill, it gets easier to push again.

If you have three or four guys pushing together, the whole process gets faster and easier, but even if you have fifteen guys pushing, you're only going to get the car moving at a max speed of three or four miles per hour.

Well, that's exactly how electric motors work. The number of guys pushing is the amperage. How hard each guy can push is the voltage. So as you can see, there's no such thing as "too many" guys pushing. You could have a hundred, it wouldn't hurt the car, or any of the other guys pushing. But even with a hundred, collectively they're only going to get the car going about 4 MPH max. You'll need more "voltage" to go faster.