Andy5400
New Member
As a homeowner, I plan to dig a trench, 18 inches deep and 75 feet long, from my house to my orchard. I'd like to install all the services that I might need going forward, as long as I'm digging once!
Important question: Can I put a 120VAC feed, a water line (1-inch poly, 60psi), and irrigation electrical wires (24VAC) in the same trench (i.e. separate conduits, in same trench)?
From what I've learned so far: I plan to put the 120VAC in grey PVC 1-inch Sched 40 conduit, use 12AWG individual conductors with XHHW insulation, use 3 conductors (hot neutral ground), and protect with a 20A GFCI in the house ckt bkr panel. And use more substantial conduit, where the conduit rises vertically at the orchard. Then a watertight outlet box mounted on a vertical post. At the house I plan to go straight through the concrete foundation at 18 inches below grade, then put an electrical box on the inside basement wall to connect to house Romex. (Or is there a requirement that the conduit come out of the ground on the house exterior wall and go inside via an ell?)
I plan to run a separate PVC conduit for the 24VAC irrigation electrical wires. Is it accurate that there are no NEC requirements about these 24VAC wires?
Is it important to put sand and a warning tape in the trench, to warn against digging? Is this a requirement of the NEC or of local building inspectors?
I want to learn about this and get smarter, before I talk with the town and get a permit.
What else do I need to consider?
Important question: Can I put a 120VAC feed, a water line (1-inch poly, 60psi), and irrigation electrical wires (24VAC) in the same trench (i.e. separate conduits, in same trench)?
From what I've learned so far: I plan to put the 120VAC in grey PVC 1-inch Sched 40 conduit, use 12AWG individual conductors with XHHW insulation, use 3 conductors (hot neutral ground), and protect with a 20A GFCI in the house ckt bkr panel. And use more substantial conduit, where the conduit rises vertically at the orchard. Then a watertight outlet box mounted on a vertical post. At the house I plan to go straight through the concrete foundation at 18 inches below grade, then put an electrical box on the inside basement wall to connect to house Romex. (Or is there a requirement that the conduit come out of the ground on the house exterior wall and go inside via an ell?)
I plan to run a separate PVC conduit for the 24VAC irrigation electrical wires. Is it accurate that there are no NEC requirements about these 24VAC wires?
Is it important to put sand and a warning tape in the trench, to warn against digging? Is this a requirement of the NEC or of local building inspectors?
I want to learn about this and get smarter, before I talk with the town and get a permit.
What else do I need to consider?