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Generator No Load Voltage? #4532191
10/02/17 04:00 PM
10/02/17 04:00 PM
Joined: Dec 2006
Posts: 4,220
Port Orange, Florida
Panzerman Offline OP
Panzerman  Offline OP
Joined: Dec 2006
Posts: 4,220
Port Orange, Florida
I have a PowerBack Generator.
11 hp Industrial Briggs Stratton on it. Haven't used it in awhile.
I fired it up today and I thought I would check the voltage. I am getting around 113 volts at each receptle.
I plugged some lights in it, they look good and when I run several items it seems to keep up fine. It's a 6000 watt generator.
Don't they idle adjust for loads?

Last edited by Panzerman; 10/02/17 04:01 PM.


2006 Dodge Ram 2500 Hemi 4x4
2016 Dodge Challenger Scat Pack
Re: Generator No Load Voltage? [Re: Panzerman] #4532215
10/02/17 04:34 PM
10/02/17 04:34 PM
Joined: Jun 2014
Posts: 1,947
Ca.
UncleDave Online content
UncleDave  Online Content
Joined: Jun 2014
Posts: 1,947
Ca.
Thats a constant RPM (prob 3600) genny.

It will throttle up or down to maintain 3600 but wont spin any lower than that.

You are thinking of an inverter generator that varies RPM under load and can idle down to a whisper under low load - thats not what you have.



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Re: Generator No Load Voltage? [Re: Panzerman] #4532219
10/02/17 04:45 PM
10/02/17 04:45 PM
Joined: Dec 2006
Posts: 4,220
Port Orange, Florida
Panzerman Offline OP
Panzerman  Offline OP
Joined: Dec 2006
Posts: 4,220
Port Orange, Florida
No. I got a Honda Whacker 6200 generator and it definitely changes rpms when you increase loads or subtract loads.
I really haven't used this Powerback as much. I took it camping once and ran my trailer with it but that was years ago. I can tell you the exhaust gets cherry red from heat which freaked me out do I changed the exhaust. It now sports a Polaris 500 Sportsman muffler and runs quieter and cooler.



2006 Dodge Ram 2500 Hemi 4x4
2016 Dodge Challenger Scat Pack
Re: Generator No Load Voltage? [Re: Panzerman] #4532252
10/02/17 05:30 PM
10/02/17 05:30 PM
Joined: Jun 2003
Posts: 33,559
ME
eljefino Offline
eljefino  Offline
Joined: Jun 2003
Posts: 33,559
ME
They adjust for loads, but run the full 3600 RPM. You'll hear it throttle up when you turn on a hair dryer. Hey, try it!

No-load voltage on a cheap meter is open to interpretation. I bet if you used a different DVOM you'd get 117 volts. If, however, you could get the cycles-per-second that would be a great piece of data to have to see if it's running the spec 60 Hz.

I had the red exhaust from my old mean 8hp Briggs generator from 1977.

Re: Generator No Load Voltage? [Re: Panzerman] #4532258
10/02/17 05:36 PM
10/02/17 05:36 PM
Joined: Aug 2005
Posts: 919
dayton oh
kc8adu Offline
kc8adu  Offline
Joined: Aug 2005
Posts: 919
dayton oh
i set them to maintain as close to 60hz as possible under load.
dont worry about voltage.
it will be close enough.

Re: Generator No Load Voltage? [Re: Panzerman] #4532278
10/02/17 05:55 PM
10/02/17 05:55 PM
Joined: Dec 2002
Posts: 42,293
New Jersey
JHZR2 Offline
JHZR2  Offline
Joined: Dec 2002
Posts: 42,293
New Jersey
They better not change from 3600 or the frequency will not be 60Hz. Inverter generators make a synthetic waveform so don't have this issue.

If equipped with an automatic voltage regulator, it should boost voltage under load.

Re: Generator No Load Voltage? [Re: Panzerman] #4532286
10/02/17 06:02 PM
10/02/17 06:02 PM
Joined: Aug 2003
Posts: 13,137
NE,Ohio
Rand Online content
Rand  Online Content
Joined: Aug 2003
Posts: 13,137
NE,Ohio
Those generators with idle control drop the rpms with no_load.

As soon as you put a load on it snaps to 3600rpm to provide 60hz power.

in your case you want to look at hertz while idling. which would tell you rpm when multiplied by 60.


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Re: Generator No Load Voltage? [Re: Rand] #4532376
10/02/17 07:11 PM
10/02/17 07:11 PM
Joined: Oct 2011
Posts: 1,459
CA
user52165 Offline
user52165  Offline
Joined: Oct 2011
Posts: 1,459
CA

Re: Generator No Load Voltage? [Re: kc8adu] #4532395
10/02/17 07:26 PM
10/02/17 07:26 PM
Joined: Oct 2011
Posts: 1,459
CA
user52165 Offline
user52165  Offline
Joined: Oct 2011
Posts: 1,459
CA
Originally Posted By: kc8adu
i set them to maintain as close to 60hz as possible under load.
dont worry about voltage.
it will be close enough.


Might want to rethink that.

Knew someone with a Honda non inverter genny that kept wrecking whatever he had plugged in. Portable 600 or 650 job. Great engines in those, but.............Said it "seems to run fast". It did. I tested it at 180+ volts. Had those stupid frequency lites Honda used to use and they indicated OK. Tested about 62Hz.

Last edited by user52165; 10/02/17 07:30 PM.
Re: Generator No Load Voltage? [Re: kc8adu] #4532434
10/02/17 08:10 PM
10/02/17 08:10 PM
Joined: Dec 2016
Posts: 7,132
Waco, TX
Linctex Offline
Linctex  Offline
Joined: Dec 2016
Posts: 7,132
Waco, TX
Originally Posted By: kc8adu
i set them to maintain as close to 60hz as possible under load.
dont worry about voltage.
it will be close enough.


EXACTLY.... get a Kill-A-Watt and adjust the governor spring when under load.


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Re: Generator No Load Voltage? [Re: user52165] #4532677
10/03/17 06:51 AM
10/03/17 06:51 AM
Joined: Aug 2005
Posts: 919
dayton oh
kc8adu Offline
kc8adu  Offline
Joined: Aug 2005
Posts: 919
dayton oh
if it is not an inverter type if it is at 3600rpm it WILL be on target voltage wise.
something else is up on that one.
if it sounds high it is.
a friend let something hit his in the truck and bent the throttle linkage.
ran way fast and blew mov's in everything he plugged it into.
easy fix for the generator and the damaged stuff.
once fixed and set right it ran 4 weeks without incident.
this was after ike.
the open design of this one leaves the linkage vulnerable.
it is literally a engine and alt on a tube frame/handle.
Originally Posted By: user52165


Might want to rethink that.

Knew someone with a Honda non inverter genny that kept wrecking whatever he had plugged in. Portable 600 or 650 job. Great engines in those, but.............Said it "seems to run fast". It did. I tested it at 180+ volts. Had those stupid frequency lites Honda used to use and they indicated OK. Tested about 62Hz.


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