Been working on a 'beefed up' 50 amp control panel meant for larger batches. I thought I'd share some pictures...
From the front the 50 amp panel appears just like the regular 30 amp panel:
Below are two extra heating element receptacles (to allow 2 elements per kettle) and a beefier 50 amp power input receptacle:
On the inside the 30 amp wiring and components are upgraded to 50 amp where required and extra fuses are added to protect the 30 amp wiring:
The fusing is required because on the standard 30A control panel the 30A circuit breaker in the electrical panel wall protects the 10 ga wiring. With this larger 50A panel the 50A circuit breaker in the electrical panel protects the 6ga wiring but we now need to add protection for the smaller 10ga wiring. So 30A fuses in 30A fuse holders are added to each of the HOT lines between the HLT and BK contactors and the element receptacles. 8 fuses/breakers total. This protects the 10 ga wire inside the panel and the 10 ga external wire between the element receptacle and the kettle. Just in case.
I like fact that the front of the panel does not change, so it looks and feels the same, the process is the same. You just now have nearly twice as much power in each kettle, allowing easy brewing for 1 barrel of beer (31 gallons) and possibly more. The upper limit is somewhat undefined, I probably wouldn't want to do more than 1.5 to 2 bbl with this but there are many factors involved (ambient temp/wind/etc).