I just hook up one cord in bath the other in kitchen. The pumptec can sometimes run on same circuit as one of the vac cords. Its easy to tell if vacs are on same circuit as when you flip tge second switch youll hear the motor start dying down. Or lol lights dim. The pump though i used to leave outside so ide plug it into any outlet close by. Kitchen and bath should theoretically be completely separate. But if theres a bath directly above one another? Those will probably be one circuit.
as far as tank filling. You have to use your best judgement. They do sell float switches. When they raise they cut the power. Will need little electrical knowledge.
if you are running into old construction and having trouble with separate circuits. Homedepot sells Klein circuit finders. You simply plug the transmitter into the outlet of choice. Then touch the breakers with the receiver. Then move transmitter to your next choice and hopefully it will be a different breaker. They run about 40 bucks.
Your friend has shared a link to a Home Depot product they think you would be interested in seeing.
This is the one i just bought for doing electrical. I got tired of running up and down steps. Little finicky but works.
Digital Circuit Breaker Finder
Quickly, accurately, and automatically find the corresponding circuit breaker with the use of this Klein Tools Digital Circuit Breaker Finder. Easy to care.
www.homedepot.com
Some carpet machines come with an indicator light. But they dont always work.