Different answers regarding best option for wire or cable to accessory building…

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Kh82nj

New User
Location
Orlando, FL
Occupation
Real Estate
Located in Orlando, FL. Running power to an accessory structure from primary home. 125Amp in non-metallic pvc conduit buried 24” 300’ to structure. The building is 1000sf and has laundry room with washer/dryer, kitchen possibly in the future (the reason I want 125A service is to never need to upgrade), on demand propane water heater, 1 bed, 1 bath, 2.5ton AC unit with condenser and handler.

Running several wire calculators to keep around the recommended although I understand not required 3% in drop is giving me a pretty big and costly cable.

Trying to save money and handle the underground and service myself then learn as I go.

Just today I was recommended to go with (2) 2 aught, (1) 1 aught for neutral, and #2 for the ground.

Any help would be appreciated as I just want to do it the right way one time and the different specs of wire are a bit confusing to a novice.

Thank you in advance!
 
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