Question about Electrical Supplies

1 Answer

Generator loses power under a load

For example a microwave will almost kill the engine and does not generate enough power to run it.

Posted by on

  • sal sabea
    sal sabea May 11, 2010

    is the rpm normal?...is engine sound too high?...too low?

×

Ad

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    Superstar:

    An expert that got 20 achievements.

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

  • Master
  • 5,603 Answers

A microwave oven is a fairly "reactive" load due to the current limiting transformer. You should probably have at least a 3000 watt generator to run a microwave oven.

Posted on Nov 02, 2009

Ad

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

Ad

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

Generator electrical problem


No it sounds like the engine is losing power, as the RPM drops the voltage drops, this increases the current load and that trips the breaker.

Jul 21, 2016 | Electrical Supplies

1 Answer

Champion 71000i generator overloads


Can you provide more detail on this? Such as under what conditions it overloads, and how much power you're drawing off of it? Keep in mind that generators have two ratings: Sustained Load and Peak Load. Mine, for example, can handle a sustained load of 1,750 watts, and can handle short-term peak loads of 2,000 watts. Note also that if you're running a microwave, they take a lot. So does anything with a motor in it (refrigerator, etc) on initial start up. Once you've added up all your loads, adjust to where you're within your generator's sustained load and you should be fine.

Nov 27, 2014 | Electrical Supplies

1 Answer

HOW TO SWITCH 6260 TO 60HZ


6260 isn't a model number for any Ingersoll Rand generator.

Generally, though, if you have a generator that generates 50Hz and you want it to produce 60Hz instead, you adjust the governor to increase engine running speed by 20%... if the engine will tolerate that speed. The first thing you need to do is find out what speed the engine runs when it's under normal load. If that speed can't safely be increased 20%, then the generator head has been built strictly for 50Hz and there's nothing you can do about it except run a UPS between the generator and your load.

If the engine speed IS low enough to safely increase by 20%, then that's what you do.

Jul 03, 2014 | Ingersoll Rand Electrical Supplies

1 Answer

How do you stop generator from stalling under load


As you have not provided me with the information I requested I'm going to have to take a few guesses here Bob. You could be overloading the generator. You can't run a 10,000 BTU air conditioner off of a 1000 watt generator. You need to look at your load, (what you are trying to power), and determine how much power it needs. Almost everything has a tag somewhere on the device. Most don't give watt requirements. But they do tell you, how many amps the device pulls, as well as the voltage the device needs. So you need to do some math here. Volts X Amps = Watts. So if we have a 120 volt device, that pulls 15 amps, we need 1800 watts to power it. But it gets a little more tricky than that. Motors are often rated at what they pull while they are running! But it can take two or three times more power to get them started. Example... A motor rated at 10 amps, using 120 volts will be 120 X 10 = 1200 watts. But it could take 2400-3600 watts to get it running. So in theory a 3000 watt generator may die before it can start that load. Heating elements are also power hungry! Let's say you have a small 800 watt generator, and your just trying to run a simple coffee pot! Well the heating element in a typical coffee pot pulls 1000-1500 watts. A hair dryer or microwave oven rated at 1000 watts, is the power they produce, not the power they consume! So a 1000 watt microwave may pull 1600 watts of power to run. Most non US generators are highly over rated as well. I certainly would not trust a Harbor Freight 3000 watt generator to actually put out 3000 watts of power. Not that they are bad units, I would expect their numbers to be under PERFECT conditions. Temperature, humidity and altitude also play a part! Your 3000 watt generator is going to put out more power at 50 degrees, at sea level, than it is at 7000 ft in the mountains at 100 degrees. So my "guess" Bob, is that your just asking more from the generator than it can produce. Picking out a generator is not as easy as it looks. "Hey that one is $1000 and this one is $300! They both make power! What's the difference". The difference is what do you need to run! "Heck I'll just get that 50,000 watt unit"! Yeah you can do that too, but you will never use that much power, and you will burn way more fuel than you need to. My other "guess" is that you have a governor issue on the engine. As load increases the gov will throw more throttle to the motor. My generator has an option to run full speed or on the gov. So it will idle and burn less fuel while I am hammering in a nail, then go to full power when I trigger a saw connected to it. Lot's of factors involved here Bob.

May 30, 2014 | Generac Electrical Supplies

2 Answers

Generator alarm underspeed


When you get the under speed alarm is the generator under load? Try manually starting the generator with no load and let it run for a while, if no alarm, then put it under your home load and measure current draw (maybe have an electrician check it) if the amp draw and in rush caused by compressors, pumps motors etc are within the generator rating, check your fuel pressure, on average 8-11 WC Nat gas. Pressure may test well under no load but drop starving the engine of fuel unde rload. Underspeed is just that engine cannot make RPM/Frequency

Nov 28, 2013 | Generac Power Systems Generac 5522 14 Kw...

1 Answer

Onan Propane Generator Problems


Is the generator coming up to proper speed? A cycles (hertz) (should be 60 in USA) meter will tell.
If it is up to speed, see if a UPS unit is made powerful enough to power the microwave. That will handle the initial starting load from the microwave.
UPS units are handy to power stuff while you are getting the gen going.

Nov 28, 2013 | Onan MicroLite Generator, 2500 Watts / LP...

1 Answer

Kohler 5E, initially water pump impeller no good causing overheat and shut down of motor (overheat switch killed ignition), replaced raw water pump impeller, heat exchanger stays cool, exhaust manifold...


Hi,
You did not say what fuel you running the motor on??? It sounds like it may be LPG or Propane.... is so then it seems as though you do not have enough surface for evaporation...

heatman101

Jun 13, 2011 | Kohler Electrical Supplies

1 Answer

We have a Valsi 5500 watt generator that isn't putting enough voltage out to run everything in out small travel trailer. It runs the lights but doesnt push out enough voltage to carry the A/C, microwave,...


How long have you had this generator?
Has the generator worked on all of these loads before?
Model 5500 is a 5500 Watt generator which could easily be 5500 watts (Peak) and not continuous.

Your AC is an inductive load.
Your lights are resistive loads

An inductive load can cause issues when starting due to an increased current demand at start up that some generators cringe under. Do the lights flicker or are they stable? I'd say your diodes on your stator are working if you have light stability but you haven't provided nearly enough information for a detailed solution.

I'm sure you have enough voltage but you aren't getting enough current to run specific loads. How many watts is your AC? How many watts for your microwave? Both of these units demand a great deal of energy to run and when you place too much demand on your generator, it will choke it out and eventually, will cause damage to the generator. You may consider getting a beefier generator with a greater amount of wattage output.


Seeing these specs online and noting what you are trying to run, you have an undersized generator and need to get one that can produce a greater amount of running wattage (as well as peak wattage).

Apr 12, 2011 | Watts Onan Portable Generator - 4000 ,...

1 Answer

I have a coleman 6000. It runs for a whileand when I load it up it trips off.


Make sure the governor is working properly. When you put a load on it the engine should increase in speed slightly. Make sure the engine is running at the correct speed 3600 rpm. Try plugging in an item that draws less power such as a electric drill and see how the generator behaves. Also make sure the engine runs smooth while not under any load. Check the voltage from the outlet to make sure it is putting out 132 volts not under load.

Mar 14, 2011 | Coleman Powermate Proforce 6,000 Watt 12...

1 Answer

I have a goldstar microwave model ma-1301 rv Whats the smallest generator that can run this safely?


A 1,500 watt generator will run this microwave. Do not get anything any smaller. The microwave will more than likely pull at least 900 watts but you need some reserve. A 1,000 watt generator might be able to supply enough power but to be safe and sure, get a 1,500 watt. Look on the microwave and see exactly what the power output is and make sure you get a generator with some reserve. If you find this is a 700 watt microwave then a 1,000 watt generator will be fine but later on you may want a larger microwave.

Dec 16, 2009 | Crock Pots & Slow Cookers

Not finding what you are looking for?
Electrical Supplies Logo

Related Topics:

238 people viewed this question

Ask a Question

Usually answered in minutes!

Top Electrical Supplies Experts

Steve

Level 3 Expert

3287 Answers

Gene Haynes

Level 3 Expert

5089 Answers

Brad Brown

Level 3 Expert

15756 Answers

Are you an Electrical Supply Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...