MudHog
Well-known member
Time to get the generators out and make sure everything is running and load tested. For those that have generators on auto transfer switches that start the generator every so many days, that is fine and dandy for the engine to know it starts, but serves little to no purpose for the generator head or even for the engine itself. Just because the engine is running, doesn't mean that the generator is producing voltage, can produce the rated wattage, or that the engine can maintain power with a high wattage draw. A good load test (70% is a general rule of thumb) gives peace of mind that the generator will be ready when the time is needed. Also will a load, the engine comes up to operating temperature quicker and boils any accumulated moisture in the engine oil or engine itself, as well as do the same with accumulated moisture in the generator head. Accumulated moisture in a generator head can short out the excitation field which then causes the head to produce no power.
Also a good time to get supplies stocked up. Although a "slow" season is projected by NOAA, it only takes on storm to knock things out and cause problems.
Here are a couple videos of my homemade load bank I built last year. This is simply just a water heater, but I can pull 11,500W at 240V using three water heater elements (2 @ 4500W and 1 @ 2500W). My Kubota is a 12,500W generator so I can pull 92% of its rating if I wanted to or pull 72% if I turn on just the 2 at 4500W elements. Having a lower rated element also lets me load test smaller generators. The little Briggs in the other video is my dad's generator that I fixed for him and was load testing it. It has a 5500W rating and in the video I had it on a 4500W element.
You can use your home as a load bank (although you will want to turn everything off and then you will have to reset any clocks and such), you can use electric room heaters, or you can even use a number of light bulbs to build up the load. Ideally, 240V is best, because your checking both legs of the generator field. If you only check with 120V, make sure you check multiple outlets so that you are checking both legs of the generator. A generator can produce voltage on one leg and not show any signs that the other leg is not producing voltage.
Kubota: https://youtu.be/XDego8Nf5Gc
Briggs: https://youtu.be/c_J9_M2OB5g
Also a good time to get supplies stocked up. Although a "slow" season is projected by NOAA, it only takes on storm to knock things out and cause problems.
Here are a couple videos of my homemade load bank I built last year. This is simply just a water heater, but I can pull 11,500W at 240V using three water heater elements (2 @ 4500W and 1 @ 2500W). My Kubota is a 12,500W generator so I can pull 92% of its rating if I wanted to or pull 72% if I turn on just the 2 at 4500W elements. Having a lower rated element also lets me load test smaller generators. The little Briggs in the other video is my dad's generator that I fixed for him and was load testing it. It has a 5500W rating and in the video I had it on a 4500W element.
You can use your home as a load bank (although you will want to turn everything off and then you will have to reset any clocks and such), you can use electric room heaters, or you can even use a number of light bulbs to build up the load. Ideally, 240V is best, because your checking both legs of the generator field. If you only check with 120V, make sure you check multiple outlets so that you are checking both legs of the generator. A generator can produce voltage on one leg and not show any signs that the other leg is not producing voltage.
Kubota: https://youtu.be/XDego8Nf5Gc
Briggs: https://youtu.be/c_J9_M2OB5g