3-wire source power?
I am building an AiOne system. I am pretty much following your guidance exactly. I have a question regarding the source power.
My plan is to use an existing 240v 30a receptacle that my dryer plugs in to along with a spa panel for gfci protection. So the spa panel would plug into the dryer outlet. Then the control panel would plug into the spa panel. It turns out my dryer receptacle is an older 3-wire receptacle. (two hot and a ground) Will not having a dedicated neutral conductor at the outlet prevent me from doing it this way?
Thanks for your input.
Sorry for my late response...I was away for a few weeks.
You could do that without the neutral, making sure that all components are rated 240V, but the pumps are 120V, so you'll need the neutral.
I think there is no way around having a neutral wire if you want to control the pumps with the control panel.
Let me know if you have more questions.