Wasn't there a rule where you would add up the maximum total amperage and then divide by 2/3.
I remember in our old house I had separate dedicated lines and had a hydra 6 for my components and 4xhydra 2's for amps(5) and subs.
I auditioned a 15a Torus and damned if I could here anything different of the two.
It wasn't until I picked up a 20a Torus and split up some of the amps,relieving the 15a from which I believe was to much for her.
Then it was Holy crap WTF,everything was huge,stage,authoritative bottom ect,closer to a live event type of sound,effortlessness.
Was a huge shock at to what I was hearing as if the system grw an extra set of B_ _ _S,instead of feather weight we have in the ring with Tyson and you can't geyt away from him

.
Add up all your amps(max power) and components to see where your at,then get ready for a hell of a ride.
I use a 240v for my components with 4Bsst and projector and the a 60a for 28's and 7Bsst on the front.
If Bryston(Torus)comes out with something noticeably better I'd be all over it.
The Torus is not I think I hear a difference,you have no choice as it's in your face type of change and it's soooo good for the music.
These are staying put in my system and the protection is #1 as I had two F113's die because they weren't plugged into the Torus and the other two that weren't were fine.
So superb protection and and a huge compliment for your music.