I was going to post pictures, which I’ll get around to.
I bought a power distribution box, made a 50 foot extension cord (6/4 rubber cable), another 30amp ext cord (coleman, premade/commercial) then made a 30 amp splitter so I could run TWO 4800 watt heaters. One I’d bought a year ago to load the 802a, it was pricey, around $99 delivered.
Recently ran my new (to me) 803a with one heater, and two water tank heaters (5500 and 1500 watt) plus a hair dryer and small 1500 watt space heater (added up to about 12kw). Ran flawlessly for about a half hour, just long enough for the water in a 20 gallon garbage can to come to a boil.
Then I found a deal on the jungle website two weeks ago for another heater:
https://smile.amazon.com/gp/product/B002SG7EWG/ref=oh_aui_search_detailpage?ie=UTF8&psc=1
Got it “used” (never out of box, just returned for some reason), delivered, for $31 and change/tax.
I coulda bought a dedicated load bank, but for me, this is more practical, as the idea of the PDU/ext cord and splitter is, if we get another ice storm and lose power for a day (or five - the record here, but 24-28hrs isn’t unusual), I can fire up the genset, get the splitter on the main floor, heat that floor and the basement (where the water pipes are), burn firewood in the firebox, keep the house nice and toasty warm while running some lights, toaster, microwave, coffee make, refrigerator. Not all at once, of course.
If I need to load test/decarbonize the gensets, I can put enough load onto it/them to suit.
Many ways to skin a cat.