I have an existing outdoor GFCI outlet. Can I wire a pump relay to the existing outlet, and put another GFCI outlet after the relay? The goal is to have the second outlet only powered when the relay is "switched on."
I've got a tank that is collecting rainwater. I'm wanting to use that water to feed some raised beds using an opensprinkler pi (OSpi). I want to use the OSpi to activate a pump start relay, which would then give power to the outlet and turn the pump on (pump is activated when hit with power, no on/off switch). I already have a pump that has a three-prong plug, and I'd like to keep that intact if possible, hence to wiring the outlet.
-Dedicated circuit on a 20A breaker
-Existing outdoor GFCI outlet on the previously mentioned circuit
-All outlets are/will be housed in weather resistant bubble enclosures (like this)
-Pump Start relay comes with/will be housed in weatherproof enclosure
-Pump and sprinkler valves will also be in weatherproof housings/covered
Proposed Design/Wiring Diagram Link to the above image can be found here: https://i.imgur.com/pia2Zry.png