ECN Forum Forums General Topics of the Trade General Discussion Area Street ligfht voltage, gated community

My wife has a new career, site manager in a big gated community and she wanted some advice. They want power in a golf course rest room. It is about 800' (maybe 1000 by the time you get pipe in the ground where you have to go) from the guard shack across 2 private roads so I suggested that is not really that attractive an option. There is a street light right next to the building as part of ones that loop around the community with a christy box right there. It does look like these have individual photo cells for each post.
What voltage would I likely find there and is this a viable option. They probably only want a single 20a circuit for a couple lights and a couple fart fans. I am guessing it may be 277 on the street light but I fear it could be higher. What are these typically?