You don't recall correctly. There is no mention of a 20A socket with the 5475. The 5490, 90A model is the one you are thinking about. The 4400 series have the usual poor PF.
You will see the specs in the link I provided. It says 15A socket( as in 1875W @ 125V).
5475TC wrote:
Specifications
AC Input :
105-130 60Hz
AC Input Watts:
1260 <--------The 5475 benefits from an extremely efficient feature of operating on a standard 15 amp outlet.
Amps:
75 amp
Dimensions:
3-5/8”H 8-3/8”W 11”L
Listed:
ETL Listed
Special Features:
TempAssure standard, standard 120VAC 15 amp line cord, steel enclosure with durable powder coat finish
Replacement Upgrade?:
Yes
Series:
5400 Series
Temperature Compensation:
Yes
Type:
Deckmount Converter
Weight:
7.75 lbs
Why can't you divide 1260W by 110-125V? to arrive at Amps?
1260/110 = 11.4A, or 1260/125=10.1A;
within the range of a 2000W genny(1600VA).
The 5400 series are PFC which should be very close to VA=Watts.
HTH;
John