We're installing a septic system on otherwise undeveloped land. Eventually there will be a house near the septic system, but that could easily be years away. The electric service entrance is on a post on the edge of my property.
The septic system has a 240V 15A pump. We're putting 140' of 2" conduit in a trench to provide power to a post with the pump's control box.
I'd also like to put a 120V recep on the post, because it would be very convenient to have one there.
I could put breakers in the main service panel, one 240V for the pump and one 120V for the recep, and run those through the conduit. Or I could put a subpanel on the post, and run just one circuit from the main panel.
2 separate circuits seems simpler, but it would be nice to keep the space open in the main breaker panel.