All my engines have "can" motors. All my passenger cars are being converted to "low power" LED lighting systems. All my turnouts are externally powered by a separate KW supply. I have multiple TIU outputs poweed by multiple KWs which will power different blocks. Even if I run multiple engines in lashups on a single track I will not exceed 5 amps per KW.
I also have 10 amp circuit breakers which I can use.