Generator sizing issues?

pnichols wrote:

Boomerweps wrote:
To give you an idea of your power usage to compare to available amperage, here's my measurements on my TT:
Fridge 328 watts 2.733 amps
Bathroom fan 40 watts 0.333 amps
Microwave 1230 watts 12.05 amps
AC 1446 watts 12.05 amps
D.C. Inverter at idle batteries charged 14watts 0.117 amps
Water heater 1245 watts 10.38 amps
Toaster 692 watts 5.77 amps
Electric space heater 1500 watts 12.5 amps
Electric griddle 1500 watts 12.5 amps
Single serve coffee maker 800 watts 6.67 amps

Add 'em up, read 'em and weep, but don't go over 30 amps!

Because of the above, I added an extra stand alone receptacle with its own power inlet on my TT. I also run an extension cord separate from the power source to a table under my awning for cooking gear and such. Also I shut off my air conditioner when using the microwave. Those two with the converter (amp draw depending on battery charge status) and fridge and anything else using electricity could put me over 30 amps. Heating elements are always a large draw. Water heater, space heater, cooking elements.

Since we're talking about generators, I guess that means that we're talking about drycamping.

So ....:

1. What combinations of the items on your list do you really have to run at the same time?

AND

2. What is the impact of propane on electrical power usage with regards to your list?

Our 4000 watt built-in generator and propane supply can handle just about any really necessary simultaneous combination from the list.

Merely giving a list of power requirements for items in a typical (my) TT. Then you can figure out what you can operate at the same time. Pretty easy to exceed 30 amps during breakfast preps on a hot summer day ;)
In a CG, I use their electrical power to the max extent possible, including power not run through the TT. Boondocking or for short travel stops, I would factor in using propane for fridge and heater and use the stovetop burners for coffee and such. I do not currently drag my generator along, it's a noisy and heavy one, although it does have a TT30 jack and a 4 pole jack. I use the 4 pole jack to connect to my home in order to get full capacity from the generator, 15 amps per home buss. The standard jacks are CBed at 15amps. I need to doublecheck the windings supplying that TT30 jack.
I do not know why anyone in this thread would recommend ANY generator without a TT30 jack for a TT.
Oh, and when boondocking, the microwave becomes a breadbox ;)