NEVER EVER put two male plugs on one cord.. And do not try to power a house without a proper interlock kit or generator transfer switch...
Remember Murphy's Law.. IF IT CAN GO WRONG... IT WILL
So what can go wrong with using a double male plug?
Somebody could trip over it, pull the plug out of the house, pick it up and... DIE.. that would be bad, very very bad, because YOU would be liable both criminally and civilly.
What is wrong with "Just shutting off the main breaker" Someone might forget to shut it off... or turn it on without first shutting down and disconnecting the generator.
What happens if you use a proper INLET and a proper interlock or transfer switch:
(I used a transfer switch)
First: Understand the RV's generator on most Class A's is 120 volt only, not 120/240.. Your portables can be either 120 or 120/240 or selectable depending on the movel..
I used a 30 amp 240 volt inlet (And matching outlet on the motor home and custom made cord) only the outlet was only 120 volt on the motor home.
Hooked it up and started fliping switches in the basement
LIGHTS
HEAT
COLD (Fride or freezer)
COLD (other one)
Computers
Televisions and readios
More of the same
More lights
I can not tell you how much it cost but since this was New Years Eve in S.E. michigan.. Warm wife.... Priceless (As master card might say).
Home was where I park it. but alas the.
2005 Damon Intruder 377 Alas declared a total loss
after a semi "nicked" it. Still have the radios
Kenwood TS-2000, ICOM ID-5100, ID-51A+2, ID-880 REF030C most times