I had asked the same question, also having the 1000W Renogy, I had read the inverter could switch on and off when 240 was detected. I took roadtrippers advice at the time and fitted a separate single dedicated socket, leaving the twin 240 socket to be powered only when on EHU.
Having installed a single separate socket, (it also has a flap cover), it reminds me it’s just for a single low power/wattege appliance, and not to plug anything high power in, like you could if sharing the same sockets for EHU and inverter.
As an example, we power an electric blanket with our inverter and also a hot chocolate machine, about 500w, we have a 160 lithium B