do you have a wiring diagram by any chance?
Here is what I am trying to solve.
I currently have a 120V 20A control panel controlling my RIMS 120V 1500W element via PID/SSR and a pump.
I'd like to replace 120V feed of my CP with 240V 30A 4-wire feed (non GFCI protected) in order to add 240V 3500W BK element controlled by a separate PID/SSR combo in the same control panel.
Upgrading RIMS element from 120V to 240V is not an option as my RIMS tube is only 12" long and can not accommodate any of 240V element I had seen because they are too long
Also, I do not want to build a separate panel just to drive 240v BK element.
If I wire my 240V feed as pictured on the following attached diagram, is one donut enough to GFCI protect both: my 240V and 120V equipment inside the same panel?
Or should I use this approach with a single 3-pole relay instead?