I do not know the answer to your question, but I did hire a pot smoking buddy electrician to come to my house this year. ...well, he is my son.
I told him that last year, I could only plug up and run so many lights and pumps and then the circuit would trip when I added another light.
He said the cheapest thing to do is add a 2nd circuit breaker. He ran a wire from the circuit board and a new added circuit breaker through my attic to the bedroom closet and added two plugs to which I put two surge protectors to plug in all my lights.
He gave me a list to buy at Lowes.
Cost me $32 for parts, $20 for the 50 feet of wire, $12 for the circuit breaker, and the box and receptable, and two plugs,
to add that line.
I gave him two grams of hash for his labor and I helped him do the work.