my generator shed, the generators on the south wall there is a transfer switch that can select between generators, and there is a larger transfer switch that is on the pole so I switch between the shed and the power company, the big generator does produce three phase if needed for the shop,
the block is "hardened" it has rebar that goes into the foundation, and up through the roof, the roof is concrete with a grid of rebar about 10" x 10" grid the block has cross rebar and all filled, I do not know if its tornado Proof, but it should be very resistant, to strong winds, the large brown tank is a water storage tank,
converted the generators to propane, originally on the second picture there is a indent i the wall of the shed, that at one time held 6 55 gallon drums with gasoline in them, treated with PRIG, it worked well, but propane is easier, the propane tank is a or was an NH3 tank I bought for $200 it had a broken trailer under it, the coop had the brass valves and gave me then in tank price,
the little blue tank is for starting the generator on gas, and then would give me time to open and drop the pump in to the drum of gasoline, it will still run on gasoline, both generators will run on propane or gasoline,
If I had it all to do over again I most likely would pass on the generators, just get a welder with a generator, in it, after I bought the engine powered welder, all I would have needed to do is make an extension cord, and a plug (the correct plug set up not a suicide cord) at the first transfer switch, and call it good,
the little generator pictured was bought after an ICE storm in 1977 the power was out for over 30 days, but beside that one time since REA power, my guess is the power has been out for less than 3 days total in what all most 65 years, I am glad I have my set up but I do not know if it is necessary , the welder is on the back of the truck and is used and keep up as it is used, this morning I need to charge the battery on the generator, (it is a older not so good battery to start with), I had a automatic charger on it at one time, and after 20 years of use it malfunctioned and would boil the water out of the battery, had one battery blow up at my feet trying to start the generator and got covered with acid and the second one I had shared the combine battery with the generator shed, and put it in the combine and blew the top off and it landed behind the combine, so now I just try to keep an EYE on it and charge as necessary, and usually do a test run for some mins as well,
figure is all else fails I can pull a battery out of something around here to start it, and I do have a hand crank on the engine as well and have started it that way, but prefer the electric starter,