I would like to know what size inverter would be required to run an
electric chain saw that uses 120 volts and 10 amps.
I have some trees down in the woods that I need to cut up. I can get the
tractor to them and would like to know what size inverter ( how many
watts) do I need to run the saw. Thanks for any info
Herb

volts times amps equals watts.
120 x 10 = 1200.

Larger inverter than that may be needed. Keep the 12 volt cables as fat,
and as short as possible. Run more 110 volt AC power cord if you need to.

Christopher A. Young
Learn more about Jesus
www.lds.org
..

"Herb Eneva" wrote in message
...
I would like to know what size inverter would be required to run an
electric chain saw that uses 120 volts and 10 amps.
I have some trees down in the woods that I need to cut up. I can get the
tractor to them and would like to know what size inverter ( how many
watts) do I need to run the saw.
Thanks for any info
Herb

"Stormin Mormon" wrote in message
. ..
volts times amps equals watts.
120 x 10 = 1200.

Larger inverter than that may be needed. Keep the 12 volt cables as fat,
and as short as possible. Run more 110 volt AC power cord if you need to.


That 1200 watts is running wattage. You'll need a higher capacity inverter
to handle the start up.

On Mar 6, 2:58*pm, "Justin Time" wrote:
"Stormin Mormon" wrote in message

. ..

volts *times amps equals watts.
120 x 10 = 1200.

Larger inverter than that may be needed. Keep the 12 *volt cables as fat,
and as short as possible. Run more 110 volt AC power cord if you need to.

That 1200 watts is running wattage. You'll need a higher capacity inverter
to handle the start up.

But, starting up under no-load should be so short a time that the
inverter should be able to handle a 1-second surge. They are always
rated for both peak and steady-state load, and a 1200 watt unit should
have at least a 10% overload factor that will get the chain saw
running easily as long as it is under a no-load start-up. Now, if the
saw binds, you could easily go over the 10 amps / 1200 watts for
several seconds. Most likely, the invertor will not blow up, but will
either shut down or blow a fuse.

On Mar 6, 5:20*pm, "hr(bob) "
wrote:
On Mar 6, 2:58*pm, "Justin Time" wrote:

"Stormin Mormon" wrote in message

...

volts *times amps equals watts.
120 x 10 = 1200.

Larger inverter than that may be needed. Keep the 12 *volt cables as fat,
and as short as possible. Run more 110 volt AC power cord if you need to.

That 1200 watts is running wattage. You'll need a higher capacity inverter
to handle the start up.

But, starting up under no-load should be so short a time that the
inverter should be able to handle a 1-second surge. *They are always
rated for both peak and steady-state load, and a 1200 watt unit should
have at least a 10% overload factor that will get *the chain saw
running easily as long as it is under a no-load start-up. *Now, if the
saw binds, you could easily go over the 10 amps / 1200 watts for
several seconds. *Most likely, the invertor will not blow up, but will
either shut down or *blow a fuse.

I agree with the above. The start-up current on a
chainsaw with no load isn't going to be that significant and it
only lasts a fraction of a second. The
10 amps is likely the draw with a heavy cutting load. A
1200 Watt inverter will likely be sufficient.

"hr(bob) " wrote in message
...
On Mar 6, 2:58 pm, "Justin Time" wrote:
"Stormin Mormon" wrote in message

. ..

volts times amps equals watts.
120 x 10 = 1200.

Larger inverter than that may be needed. Keep the 12 volt cables as fat,
and as short as possible. Run more 110 volt AC power cord if you need
to.

That 1200 watts is running wattage. You'll need a higher capacity inverter
to handle the start up.

But, starting up under no-load should be so short a time that the
inverter should be able to handle a 1-second surge. They are always
rated for both peak and steady-state load, and a 1200 watt unit should
have at least a 10% overload factor that will get the chain saw
running easily as long as it is under a no-load start-up. Now, if the
saw binds, you could easily go over the 10 amps / 1200 watts for
several seconds. Most likely, the invertor will not blow up, but will
either shut down or blow a fuse.

I haven't priced either in a long time, but isn't a gas chain saw rental
going to cost about the same or less than an inverter that size? I'll bet
a 1200W unit never even starts the saw and if it does, it won't run for
long. When I was looking at battery/inverter technology for my sump pump,
it seemed that the rule of thumb was having a capacity twice that of the
motor's nameplate rating.

More than one vendor I checked suggested I would have needed a 3000W
inverter to run a 1/2HP AC pump, so I went with a unit that used a 12VDC
submersible motor instead. Using a 12VDC motor increased the run time
substantially - from hours for the AC pump/inverter to days with the DC pump
when used every 10 minutes or so. Less GPM pumping capacity but far greater
efficiency than a battery to inverter setup.

Of course we're talking chain saws, but I think that makes it even worse. A
pump impeller is almost a frictionless load compared to a chainsaw. I can
only imagine a that motor that has to get the entire chain and sprocket
assembly going will draw even more startup current than a pump, especially
if the lubricant's dried out a little. I wouldn't expect a 1200 or even a
1500W inverter to even start a 10A chainsaw or power it through the first
blade bind. But this is Usenet and someone will make a liar out of me, I am
sure. (0:

There's a reason why my 10A radial arm saw dims the clamp lamp connected to
it on a dedicated 20A circuit. It might be an interesting experiment to see
if my Kil-o-Watt meter can register the start-up surge.

--
Bobby G.

Most inverters have a dual rating, run watts and startup surge.

Christopher A. Young
Learn more about Jesus
www.lds.org
..

"Justin Time" wrote in message
...

That 1200 watts is running wattage. You'll need a higher capacity inverter
to handle the start up.

On Mar 6, 5:45*pm, "Stormin Mormon"
wrote:
Most inverters have a dual rating, run watts and startup surge.

I have a Redi-Line that has 1600 continuous output watts and 2400
surge output watts. I bought it back in the late '90's and it was
around $2,000. I would suggest that the OP buy a gas powered chainsaw.

My 500 watt Redi Line stopped working. I havn't the heart to pitch it out. I
conacted the company for repair estimate. I bought it used in 1985 or so,
and it's probably antique. But, I can't bring myself to throw it away, or
scrap it for the copper.

Christopher A. Young
Learn more about Jesus
www.lds.org
..

"Ron" wrote in message
...

I have a Redi-Line that has 1600 continuous output watts and 2400
surge output watts. I bought it back in the late '90's and it was
around $2,000. I would suggest that the OP buy a gas powered chainsaw.

On Mar 6, 6:15*pm, Ron wrote:
On Mar 6, 5:45*pm, "Stormin Mormon"

wrote:
Most inverters have a dual rating, run watts and startup surge.

I have a Redi-Line that has 1600 continuous output watts and 2400
surge output watts. I bought it back in the late '90's and it was
around $2,000. I would suggest that the OP buy a gas powered chainsaw.

Say what? You can get a 1600 watt today for under $200. And even 15
years ago they were not that
expensive.

"Ron" wrote in message
...
On Mar 6, 5:45 pm, "Stormin Mormon"
wrote:
Most inverters have a dual rating, run watts and startup surge.

I have a Redi-Line that has 1600 continuous output watts and 2400
surge output watts. I bought it back in the late '90's and it was
around $2,000. I would suggest that the OP buy a gas powered chainsaw.

Or rent one for the occasion.

--
Bobby G.

"Stormin Mormon" wrote:
volts times amps equals watts.
120 x 10 = 1200.

Larger inverter than that may be needed. Keep the 12 volt cables as fat,
and as short as possible. Run more 110 volt AC power cord if you need to.

Christopher A. Young
Learn more about Jesus
www.lds.org
.

"Herb Eneva" wrote in message
...
I would like to know what size inverter would be required to run an
electric chain saw that uses 120 volts and 10 amps.
I have some trees down in the woods that I need to cut up. I can get the
tractor to them and would like to know what size inverter ( how many
watts) do I need to run the saw.
Thanks for any info
Herb

1200 watts divided by 12 volts = 100 amps. 120 ahr battery = less than one
hour operating time. What kind of tractor? If that's big enough, you still
need a couple thousand rpm.

Greg

On Mar 6, 10:04*pm, gregz wrote:
"Stormin Mormon" wrote:
volts *times amps equals watts.
120 x 10 = 1200.

Larger inverter than that may be needed. Keep the 12 *volt cables as fat,
and as short as possible. Run more 110 volt AC power cord if you need to.

Christopher A. Young
Learn more about Jesus
*www.lds.org
.

"Herb Eneva" wrote in message
...
* *I would like to know what size inverter would be required to run an
electric chain saw that uses 120 volts and 10 amps.
I have some trees down in the woods that I need to cut up. I can get the
tractor to them and would like to know what size inverter ( how many
watts) do I need to run the saw.
Thanks for any info
Herb

1200 watts divided by 12 volts = 100 amps. 120 ahr battery = less than *one
hour operating time. What kind of tractor? If that's big enough, you still
need a couple thousand rpm.

Greg

Interesting point...

Why is the OP looking for an inverter rather than a small
gas powered generator or even a gas powered chainsaw...

I feel that the "application" here is needlessly complicated
by user error and over engineering...

~~ Evan

On 3/6/2012 10:09 PM, Evan wrote:
On Mar 6, 10:04 pm, wrote:
"Stormin wrote:
volts times amps equals watts.
120 x 10 = 1200.

Larger inverter than that may be needed. Keep the 12 volt cables as fat,
and as short as possible. Run more 110 volt AC power cord if you need to.

Christopher A. Young
Learn more about Jesus
www.lds.org
.

"Herb wrote in message
...
I would like to know what size inverter would be required to run an
electric chain saw that uses 120 volts and 10 amps.
I have some trees down in the woods that I need to cut up. I can get the
tractor to them and would like to know what size inverter ( how many
watts) do I need to run the saw.
Thanks for any info
Herb

1200 watts divided by 12 volts = 100 amps. 120 ahr battery = less than one
hour operating time. What kind of tractor? If that's big enough, you still
need a couple thousand rpm.

Greg

Interesting point...

Why is the OP looking for an inverter rather than a small
gas powered generator or even a gas powered chainsaw...

I feel that the "application" here is needlessly complicated
by user error and over engineering...

~~ Evan

Darn Evan, where's your imagination? It's obvious the guy wants a QUIET
way to carve up corpses of his victims. ^_^

TDD

On Tue, 06 Mar 2012 23:11:06 -0600, The Daring Dufas
wrote:

On 3/6/2012 10:09 PM, Evan wrote:
On Mar 6, 10:04 pm, wrote:
"Stormin wrote:
volts times amps equals watts.
120 x 10 = 1200.

Larger inverter than that may be needed. Keep the 12 volt cables as fat,
and as short as possible. Run more 110 volt AC power cord if you need to.

Christopher A. Young
Learn more about Jesus
www.lds.org
.

"Herb wrote in message
...
I would like to know what size inverter would be required to run an
electric chain saw that uses 120 volts and 10 amps.
I have some trees down in the woods that I need to cut up. I can get the
tractor to them and would like to know what size inverter ( how many
watts) do I need to run the saw.
Thanks for any info
Herb

1200 watts divided by 12 volts = 100 amps. 120 ahr battery = less than one
hour operating time. What kind of tractor? If that's big enough, you still
need a couple thousand rpm.

Greg

Interesting point...

Why is the OP looking for an inverter rather than a small
gas powered generator or even a gas powered chainsaw...

I feel that the "application" here is needlessly complicated
by user error and over engineering...

~~ Evan

Darn Evan, where's your imagination? It's obvious the guy wants a QUIET
way to carve up corpses of his victims. ^_^

He's such a thoughtful neighbor.

On Mar 7, 5:11*am, The Daring Dufas
wrote:
On 3/6/2012 10:09 PM, Evan wrote:





On Mar 6, 10:04 pm, *wrote:
"Stormin *wrote:
volts *times amps equals watts.
120 x 10 = 1200.

Larger inverter than that may be needed. Keep the 12 *volt cables as fat,
and as short as possible. Run more 110 volt AC power cord if you need to.

Christopher A. Young
Learn more about Jesus
*www.lds.org
.

"Herb *wrote in message
...
* * I would like to know what size inverter would be required to run an
electric chain saw that uses 120 volts and 10 amps.
I have some trees down in the woods that I need to cut up. I can get the
tractor to them and would like to know what size inverter ( how many
watts) do I need to run the saw.
Thanks for any info
Herb

1200 watts divided by 12 volts = 100 amps. 120 ahr battery = less than *one
hour operating time. What kind of tractor? If that's big enough, you still
need a couple thousand rpm.

Greg

Interesting point...

Why is the OP looking for an inverter rather than a small
gas powered generator or even a gas powered chainsaw...

I feel that the "application" here is needlessly complicated
by user error and over engineering...

~~ Evan

Darn Evan, where's your imagination? It's obvious the guy wants a QUIET
way to carve up corpses of his victims. ^_^

TDD- Hide quoted text -

- Show quoted text -

In that event, what he needs is a cordless chainsaw.
http://www.tooled-up.com/Product.asp?PID=169951

The Daring Dufas wrote in
:

On 3/6/2012 10:09 PM, Evan wrote:
On Mar 6, 10:04 pm, wrote:
"Stormin wrote:
volts times amps equals watts.
120 x 10 = 1200.

Larger inverter than that may be needed. Keep the 12 volt cables
as fat, and as short as possible. Run more 110 volt AC power cord
if you need to.

Christopher A. Young
Learn more about Jesus
www.lds.org
.

"Herb wrote in message
...
I would like to know what size inverter would be required to
run an
electric chain saw that uses 120 volts and 10 amps.
I have some trees down in the woods that I need to cut up. I can
get the tractor to them and would like to know what size inverter (
how many watts) do I need to run the saw.
Thanks for any info
Herb

1200 watts divided by 12 volts = 100 amps. 120 ahr battery = less
than one hour operating time. What kind of tractor? If that's big
enough, you still need a couple thousand rpm.

Greg

Interesting point...

Why is the OP looking for an inverter rather than a small
gas powered generator or even a gas powered chainsaw...

I feel that the "application" here is needlessly complicated
by user error and over engineering...

~~ Evan

Darn Evan, where's your imagination? It's obvious the guy wants a
QUIET way to carve up corpses of his victims. ^_^

TDD

Can anyone tell if he's posting from Fargo, ND?

On Wed, 7 Mar 2012 03:04:16 +0000 (UTC), gregz
wrote:

"Stormin Mormon" wrote:
volts times amps equals watts.
120 x 10 = 1200.

Larger inverter than that may be needed. Keep the 12 volt cables as fat,
and as short as possible. Run more 110 volt AC power cord if you need to.

Christopher A. Young
Learn more about Jesus
www.lds.org
.

"Herb Eneva" wrote in message
...
I would like to know what size inverter would be required to run an
electric chain saw that uses 120 volts and 10 amps.
I have some trees down in the woods that I need to cut up. I can get the
tractor to them and would like to know what size inverter ( how many
watts) do I need to run the saw.
Thanks for any info
Herb

1200 watts divided by 12 volts = 100 amps. 120 ahr battery = less than one
hour operating time. What kind of tractor? If that's big enough, you still
need a couple thousand rpm.

Greg

You don't want to have the tractor stuck in the woods with a dead
battery.
When I was looking into them to power my furnace and some lights from
an inverter in case of a power outage, the biggest issue was my car
alternator.
It's the stock 100 amps, but I still don't know what engine rpm that's
based on.
A tractor probably has a lower amp alternator.
That's the weak spot.
You're not going to run a tool long on a single battery without the
alternator going.
10 amps is a pretty heavy draw on a battery.
Anyway, I decided hooking up a small gas space heater was easier and
more cost efficient.
There's some power loss with inverters, and they need heavy wiring and
lugs..
Best place to get first hand advice on them is RV and contractor
forums.
I noticed some contractors use them to run power tools at job sites.
Those are probably mostly hooked to pickup trucks with 100 amp or
better alternators.
I'm with those who say get a small gas generator or a gas saw.
But if you can pick up a 2000W inverter cheap, give it a go.

--Vic

On Mar 6, 6:20*pm, "Stormin Mormon"
wrote:
volts *times amps equals watts.
120 x 10 = 1200.

Larger inverter than that may be needed. Keep the 12 *volt cables as fat,
and as short as possible. Run more 110 volt AC power cord if you need to.

Christopher A. Young
Learn more about Jesus
*www.lds.org
.

"Herb Eneva" wrote in message

...
* *I would like to know what size inverter would be required to run an
electric chain saw that uses 120 volts and 10 amps.
I have some trees down in the woods that I need to cut up. I can get the
tractor to them and would like to know what size inverter ( how many
watts) do I need to run the saw.
Thanks for any info
Herb


Volts times amps does not equal watts.
Jesus won't have you for a sunbeam if you tell lies. :-)

Your battery won't last long so leave the engine running.
,
There is a possibility of overloading the alternator too.
Really you need a gas engine chain saw.

"harry" wrote in message
...
On Mar 6, 6:20 pm, "Stormin Mormon"
wrote:
volts times amps equals watts.
120 x 10 = 1200.

Larger inverter than that may be needed. Keep the 12 volt cables as fat,
and as short as possible. Run more 110 volt AC power cord if you need to.

Christopher A. Young
Learn more about Jesus
www.lds.org
.

"Herb Eneva" wrote in message

...
I would like to know what size inverter would be required to run an
electric chain saw that uses 120 volts and 10 amps.
I have some trees down in the woods that I need to cut up. I can get the
tractor to them and would like to know what size inverter ( how many
watts) do I need to run the saw.
Thanks for any info
Herb


Volts times amps does not equal watts.
Jesus won't have you for a sunbeam if you tell lies. :-)

Your battery won't last long so leave the engine running.
,
There is a possibility of overloading the alternator too.
Really you need a gas engine chain saw.

And they are not that expensive an 18" 42cc chansaw can be had for less than
U$125.
And with your level of use, and proper care, it could last you the rest of
your life.

On 3/6/2012 12:13 PM, Herb Eneva wrote:
I would like to know what size inverter would be required to run an
electric chain saw that uses 120 volts and 10 amps.
I have some trees down in the woods that I need to cut up. I can get the
tractor to them and would like to know what size inverter ( how many
watts) do I need to run the saw. Thanks for any info
Herb


Somewhere between 1600-2000 watts should do it(that includes a 30%
safety margin). Frankly though, for what that rig would cost and at the
risk of destroying the electric motor or both, you might be better
served spending the money for a used gas power at a pawn shop. Just my
opinion because I get a sense this is not a one time deal.

--
Digger
Bob O'Dell

It may turn out, that the gas saw is cheaper than the inverter.

Do you have a friend, who has a gas saw, or gas generator?

Christopher A. Young
Learn more about Jesus
www.lds.org
..

"Digger" wrote in message
...

Somewhere between 1600-2000 watts should do it(that includes a 30%
safety margin). Frankly though, for what that rig would cost and at the
risk of destroying the electric motor or both, you might be better
served spending the money for a used gas power at a pawn shop. Just my
opinion because I get a sense this is not a one time deal.

--
Digger
Bob O'Dell

(Herb Eneva) wrote in news:4213-4F5645C4-151@storefull-
3173.bay.webtv.net:

I would like to know what size inverter would be required to run an
electric chain saw that uses 120 volts and 10 amps.
I have some trees down in the woods that I need to cut up. I can get the
tractor to them and would like to know what size inverter ( how many
watts) do I need to run the saw. Thanks for any info
Herb


Is that the ONLY thing you ever plan to run on it?

All inverter wave outputs are not the same (sine, sawtooth, modified sine).
You may find it will run a chainsaw but may or may not run some electronic
things.

(Herb Eneva) wrote in news:4213-4F5645C4-151@storefull-
3173.bay.webtv.net:

I would like to know what size inverter would be required to run an
electric chain saw that uses 120 volts and 10 amps.
I have some trees down in the woods that I need to cut up. I can get the
tractor to them and would like to know what size inverter ( how many
watts) do I need to run the saw. Thanks for any info
Herb



Lots of info:

http://www.donrowe.com/inverters/inverter_faq.html