That will vary from generator to generator. gas vs diesel vs lp amount of load
Your typical coleman 5kw generator with briggs and straton engine will burn about a gallon/hour. Get the oddball cheap Chinese generators and your going to burn more.
Get a good honda and burn less.
do they use? I have a 5,000 watt generator and it doesn't say anywhere.
Ball park figure?
...................Good question ! As has already been stated , Under load it'll burn about 1 gallon per hour . Without a load it should burn less ; actually , IT should only be running IF it is working , otherwise it should be turned off .
...................For long term usage , 24\7 a small diesel genset is THE ONLY solution . My emplyer currently provides me with power from just such a unit . It is an 8kw unit , with a 3 cylinder 12 HP Kubota engine connected too an 8kw generator made in Croatia . He buys them 5 at a time so My guess is he pays about 3500 a piece . Purchased singley they'll run a round 5500 or so . They are mounted on a small trailer with a 100 gallon fuel tank which will last ~ 10 days before they need a refill . This unit would be perfect for a home with no power for days or several weeks . Diesel , if treated can last up to 3 years and still be usable . , fordy
During our recent Gustov preparedness shakedown (I made it home on leave gustov +3) we used our coleman 2500 surge generator for a week and averaged about 4 hours running to the gallon. Ten gallons of gas kept the freezer frozen and the few appliances we needed operational all week. We filled it every morning and every evening and each tank ran approximately three hours. My experience with a 10hp Briggs and Stratton suggest that the gallon per hour under close to full load is correct. My friend has a Generator exactly like yours and he runs from 1 1/2 to 2 hrs per gallon of gas under a reasonable load. You have , by the way, a fine generator that should last a long time as a backup power source. As much as twice as long as a B&S powered one all things being equal.
I'd have to go out to the shed to see just what brand name my generator is but I do remember it is a 5000 w. generator and has a 5 gallon tank on it. A couple of winters ago when I bought it during a ice storm that knocked out our power, a full tank would last about 8 hours. So that's little more then a hours worth per gallon.
I've put more hours on generators than I care to remember. From living off grid 6 years now. Worn out several. Here's the deal from what I have learned. A loaded generator doesn't burn much more than a half loaded gen so when you have to run it load it down but don't overload it. I ran several tests with brands and types of gas. Mostly with briggs engines. With ours it would run loaded for about 8 hours on 5 gallons of regular. Better yet it will run about 12 hours on 5 gallons of good premium loaded. So better gas will make a big difference. Now if you really want to stretch your fuel get an inverter generator like a Honda EU 2000. That one is real small but the inverter generators only run as hard as needed for the load they have where a regular gen runs 3600 rpm constant.
I am at work, so had to look up the generator online since I couldn't remember it. It is a Honda 5,000w Generator. The stats:
120/240 Volts, 5000 Watts
337cc OHV recoil engine
74dB noise level 8.3 hrs. run time @ 1/2 load
I don't know what the load would be, but I have a transfer switch and the entire house is on it. I use only what I need, but the refrigerator, freezer would be running.
Thanks everyone for helping... I can of course run it when I have a reason... and there will be this winter as always.
It sorta does tell you what it uses. It will run for 8.3 hours on one tank of gas at half a load. A bit more on full load. How much gas that actually is depends on the size of your gas tank. 8 gal tank would be 1gal per hour.
I've also gotten about 8 hours run time on a 5kw consumer generator topped off with 5 or 6 gallons of regular unleaded. That was running just a refrigerator and an air conditioner. If I could do it over with current technology, I'd get a good inverter, and a good 12v fridges and fans.