Now really I need to "get a life" spending too much time on this.
$0.13 is the average price per KWH of electricity in the USA (rounded up).
My RV in my driveway draws 16 to 22 A on a 120 V outlet
So round that up to 25 A, 25 a @ 120 v = 3 KW
If my AC ran 24 hr a day that would be 72 KWH a day.
72 KW x $0.13 = $9.36 a day
$9.36 x 31 days in a month = $290
If my AC ran 75% of the time that would be $217 a month
if it ran 50% of the time that would be $145 a month
if it ran 25% of the time that would be $72 a month
I only talk about my AC as w/o the AC on my current will drop to under 5 A.
If you run the refrig it would be about 5 A.
Water heater would add to this, but I don't run the water heater or refrig in the driveway.
If you are running a dryer etc etc in FL you might be burning up $250 a mo.
Only way to know is to install a meter.
Maybe some one on the site is staying by the month in your area and can tell you what they are paying for electricity?
Hopefully this will be my last comment.
I did read some more, a 5(65) A meter translates into.
5 A is the current used for the data sheet info. 65 A is the max current, and the max current for data sheet accuracy. So the little digital KWH meter would do what you need.
1984-2014, 1984 21' Hi-Lo Fun Chaser, 1972 C-20
2001-2013, 1995 34' Airstream Excella, 2001 F250
2013- Now, 2006 Itasca Meridian 36G, Jeep GC