Not overloading, but plenty hotter than 4s. Most of my post war steam pulls right near 3a continuous. I have a few with 5.5a peaks for a second under heavy starts etc. They will trip 80w modern breakers all day and eventually shut down a 1033 after a few hours. Been like that for 40 years on the 1033s. Use the KW; no issue. I don't even have a pulmore Berk or twin pullmore,.or Type 1 monsters
6 driver steam with type 2 frame motors.
sure the draw could drop with bearings etc. but they aren't screaming, locking, or sheading dust yet .