Today I got the generator rewired zig-zag (1-phase) instead of wye (3-phase), and ran the space heater and a work light. It is plug-selectable back to 3-phase at need. Wired ZZ, it's a 26kW 120/240 generator, 33kVA. Versus 40kW/50kVA 120/208x3. 140A of house-wire-melting goodness.
As of today if the power failed I could run the house off of it. At least until it sucked the teensy fuel tanks dry. -- Jim