I added one under our bed too for when we are on 30 A.
My load manager and breaker panel is under the bed so I added the recep and used a construction style extension cord and ran it out the same cable tube all the power comes in through from the outside power bay.
I leave the extension cord coiled up on top of the inverter and plug it in to the pedestal
Which is on a breaker.
For DWs hair dryer so we can still run both ACs on 30A.