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Running power tools off the slave port?

Drock

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I read somewhere on line that you can run AC power tools off the 24V slave port. Now I'm NO expert on electrical ,but how can ah 120V tool run on 24V?? Is this complete B.S. ? Could or would you wire in a power inverter to run say ah impact or skill saw? And if so what power inverter would run such ah tool?
 

Warthog

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Many of the power tools are 24v. Works fine off the slave port.

To run a 120v tool, you would need an inverter
 

MarcusOReallyus

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Could or would you wire in a power inverter to run say ah impact or skill saw? And if so what power inverter would run such ah tool?

Search the web and you'll find 24v inverters. Whether they'll run a power tool like a circular saw depends on the size of the inverter and how long you want to run it. Quality inverters that will run that kind of power are not cheap. Cheap inverters may claim to run, say, 5000 watts, but in reality, they will do that for a few months then die. And I mean a few months of occasional use. Any heavy use and they'll quit in short order.

I have a lot of experience in telecom with teams doing mobile testing, driving around in vans with multiple laptops and other devices doing testing. We typically run inverters, and of course, we calculate the maximum load and size the inverters to exceed that.

What I have found is that even quality inverters won't last more than about a year of constant use unless they are sized to DOUBLE what you think you are going to need.

You also need to account for STARTING wattage vs. RUNNING wattage. All devices, especially electric motors, use more power to get started than they do to keep running. For example, say you want to run a refrigerator that takes 700 watts to keep running. You figure a 1000 watt inverter shoujld be good. Nope. It won't even START with a 1000watt inverter, because it needs 2200 watts to start. See this table: www.2kstore.com/gen/g5.htm


So, that table says you need 1400 watts to run a circular saw, but 2300 to start it. I wouldn't try to use anything less than a 4500 watt QUALITY inverter with that, unless I were only going to use it for a few minutes at a time, now and then. Even then, if I wanted to do any serious work with it, like building a deck or something, I'd get a small generator.

So, it all depends on what you want to run and how often and how much money you want to spend.
 

TexAndy

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You might also consider keeping your overall power use within what the alternators can handle. Frequently discharging the batteries through power tool use is probably hard on them.
 

doghead

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Here's some sound advice, don't believe everything you read on the Internets.
 

Drock

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I was thinking more specifically ah full size skill saw, and or ah GOOD impact. Which they really don't make good cordless of either.
 

goldneagle

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I was thinking more specifically ah full size skill saw, and or ah GOOD impact. Which they really don't make good cordless of either.
That is your opinion and has nothing to do with reality! I have used many brands of battery operated circular saws and impact drivers and they perform very close to 120 volt versions. I am talking Professional brands not Harbor Freight.
 

Drock

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Golden,As have I. I've used cordless drills and impacts in my business for over 20 years. And yes there are some cordless impacts and skill saws that work pretty good, for short periods of time. But not as good as one's you plug in. If I could plug one into my truck I could run it all day, and not have to worry about keeping it charged.
 

m16ty

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I think Kenny (Recovery4X4) made a deal one time where you could plug the slave cable directly into a Dewalt battery slot.

On the cord vs cordless debate I see it as a trade-off. Corded tools do have more power and longer life but you're encumbered by the cord. Cordless tools give you the freedom of no cord but don't last as long. I will say the new lithium ion tools are a big improvement over cordless tools of the past.
 

Recovry4x4

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Last edited:

goldneagle

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http://www.steelsoldiers.com/showthread.php?52862-Ridgid-Power-Tools!-Love-Hate My Rigid drill and recip saw run off the slave. Works darned good too. As far as cordless tools, I'll challenge you to try the Milwaukee M18 stuff. My air tools have taken on lots of dust since I bought into the Milwaukee line. I doubt I'll ever have a cord (or hose) again..
I have the same Milwaukee tools. Awesome tools built well. Batteries have a gauge that tells you how much charge is left -so you don't climb up on the roof and find out the battery is almost dead.
 

Drock

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I'm ah Makita man myself. I've used there brand for well over 20 years now. I'm currently using the 18V (lithium-ion) ,(brushless) hammer drill and impact. These brushless motor tools last for ah full day of heavy use on one charge. Although the impact is very useful, it couldn't crack ah lug nut. http://www.cpoindustrialpowertools....p=mktnlxt239&gclid=CKWPiIe4_MACFeFj7AodxiIAwg I like the idea of running ah full size saw and a large impact off the truck (A) because they'd run stronger and all day, and (B) I could just leave them in the truck and not have to remember to charge them. (If the truck starts and runs so does the tools).
 

swbradley1

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I'll bite, what's with the constant use of ah instead of a in your sentences?

Curious.
 

Drock

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Ahhh that's called humor:razz:. Sorry, old surfer kid from FLA. it's just "ah" tongue and cheek representation of my Spicoli-esk accent.
 
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