last one on cordless tools. but a couple inverter/cord ???'s

Anonymous-0

Well-known Member
OK.... Talked me out of the cheap stuff... Neighbor kid had me order a cordless HF drill a few months ago. Came with battery and charger for around 30 bucks at the time.... Just saw his dad throwing it in the recycle dumpster this morning because it locked up. Said that you spent more time charging the battery than working with it....
Soooooooooooooooo............... Just gonna concentrate on the makita impact driver and the light that came with it, skip the drill with the screwed up chuck, and buy one battery...

Now, I have a 2000 watt (1000 continuous) inverter on the tractor and can get within a 50ft cord of anywhere I may need power. Sawzall is 710 watts and I have a HD drill that is 1050 watts, electric hedge trimmer and anything else I may need is at or under the sawzall...

Is there something (website maybe) to tell me how much power loss I would have with an extension cord of a certain length? Or is it not enough to worry about with 50ft???
 
Am I correct to understand you want to go out 50 ft. on an extension cord from a 2000 watt inverter? Good luck!
You really need to spring for a portable generator or a set of real cordless tools.
 
I don't think it would be a problem, I have done it. Keep the inverter close to the battery, a 14 ga. cord would help. Keep the tractor running so the input voltage is higher, and then you don't have to worry about it not starting! If you look in the owners manual for most power tools there is a cord size chart. You can look at them on HF website.
 

I have a little 50 watt inverter that I use with a 50ft cord and run hair clippers that works OK but was worried about the tools... No biggy tho, I have a 2500 watt (continious) portable generator that fits in the FEL bucket nicely, I'll just weld on a couple rings for bungy cords and call it good....
 
Dave2,

IMHO, perhaps no one elses, Simply use a voltmeter. Measure volts before you turn on the tool and then while it's running. There is a rule of thumb, my thumb says 10%. Others may have a shorter or longer thumb. If the wire uses 10% or more of the no load voltage, use a bigger wire. Measure the voltage at the tool. Keep in mind that some of the voltage loss may be inside the inverter too.

Again, this is just my opinion. The value of my opinion is worth just what you are paying for it:)

George
 
Dave2,
My little brain got to thinking about an inverter. If you have a 1200 watt load at 120v it will use 10 amps. If the inverter is connected to 12v battery that means it will need 100 amps from battery, that's in an ideal world.

How long do you think your battery will hold up with a 100 amp load? Your numbers will be less. 1000 w load at 120v will require 8.33 amps from inverter. At 12 volts in the inverter will neeed 83.33 amps from the battery. Be careful, you may toast your alternator. Let us know how it works out. Most batteries can produce a large current, but for only a few minutes.
George
 
(quoted from post at 06:57:39 09/05/12) Dave2,
My little brain got to thinking about an inverter. If you have a 1200 watt load at 120v it will use 10 amps. If the inverter is connected to 12v battery that means it will need 100 amps from battery, that's in an ideal world.

How long do you think your battery will hold up with a 100 amp load? Your numbers will be less. 1000 w load at 120v will require 8.33 amps from inverter. At 12 volts in the inverter will neeed 83.33 amps from the battery. Be careful, you may toast your alternator. Let us know how it works out. Most batteries can produce a large current, but for only a few minutes.
George

it's 230 volts but I see where you're going...... I'll use it as I usually do to run a 600 watt sump pump and lights and the generator for heavier stuff.
 
Watts are still watts. If your output watts are 600, the inverter's input watts will be, in theory only, 600 watts. So a 12 volt battery will need to produce 50 amps to equal 600 watts. My guess is the inverter will use some watts too, which will add to the 50 amp total. Divide your watts by 12 volts and that will be your amps. Guessing you have 12 volt battery on tractor.

If I were trying to do what you are doing, I would keep the tractor or truck running at an idle or fast idle. The slower the engine is running, the less the alternator can produce and IMHO the less stress you will put on the alternator.

I have a 10K dump trailer with a 12v hydraulic pump. I wire my dump trailer battery to the tractor's battery. When I make a dump, I slow the tractor down and watch my ammeter. Usually at an idle the alternator is producing 20 amps. It's a 61 amp alternator. To date, I haven't fried my alternator. At the end of the day, I put a charger on dump trailer battery to bring it up to full charge. You may want to do the same.
George
 

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