Looking for advice from anyone that’s done a standalone pedestal install!
1) How deep does the concrete pad need to go?
2) How wide?
3) Did you go with a) a rectangular form to perfectly match the base of the pedestal (9.75”x7”), b) a larger rectangular form then the pedestal base or c) a round form like a Sonotube?
4) does anyone who lives in San Jose hsve 3x EVSE? Thought I saw only 2x were allowed per house.
5) also for SJ people…if mounted next to (on the side) the driveway…do bollards or parking curbs need to be installed?
6) if I used Sch40 1” PVC, is there a requirement on trench width? Or just trench depth? Was planning to use a handheld georipper to hug just inside the properly line and keep as narrow as possible…this is a narrow 2” wide trench, and I would go down 18” to the top of the PVC, so 19-20” trench.
7) if I included a separate home-run with Romex 12/2 to the same pedestal for a new 120v gfci receptacle with 20A OCPD, is it ok to do that in the same conduit? If I did the math right…I have 4x #6 STR CU THHN and 3x #12 STR CU THHN…for a 28.06% fill capacity with 1” Sch40 PVC.
8) is it correct understanding that even though the ground wires on the #6 and the #12 are not considered “current carrying” that they still are considered for the fill capacity calculation? I was wondering if I could drop to 3/4” Sch40 PVC and still meet NEC?
9) do I need to use rigid Sch40 1” PVC? Or is it acceptable to use flexible Sch40 1” PVC? It seems like flexible will make it easier for me to route the conduit under the concrete and around the shrub roots.
10) my plan is to drop the circuit from the eve of the house (via non-human-accessible soffit) down the side of the house straight into the concrete walkway…then under the walkway (4’) to to edge of the property (another 2’ from walkway to property edge)…then along the edge of property edge (20’) to the concrete pad for the pedestal mount. When I go straight into and under the stamped concrete walkway…I’m hoping to avoid cutting a trench into it…and would like to go under it via as small a hole as possible. If I do this…and the walkway is >4” thick…does that mean that my burial cover requirement is only 4” (basically, just under the 4” think concrete is ok per NEC table 300.5)? Or is that only if the entire installation stays under the slab, and since my installation will eventually go to the property line in an 18” trench…then I still need to ensure the conduit is >8” under the 4” concrete walkway (so >12” cover per table 300.5)?
11) is there any code requirements requiring J/L-bolts embedded in the concrete? Or could anchors be used after the fact? What did you use?
1) How deep does the concrete pad need to go?
2) How wide?
3) Did you go with a) a rectangular form to perfectly match the base of the pedestal (9.75”x7”), b) a larger rectangular form then the pedestal base or c) a round form like a Sonotube?
4) does anyone who lives in San Jose hsve 3x EVSE? Thought I saw only 2x were allowed per house.
5) also for SJ people…if mounted next to (on the side) the driveway…do bollards or parking curbs need to be installed?
6) if I used Sch40 1” PVC, is there a requirement on trench width? Or just trench depth? Was planning to use a handheld georipper to hug just inside the properly line and keep as narrow as possible…this is a narrow 2” wide trench, and I would go down 18” to the top of the PVC, so 19-20” trench.
7) if I included a separate home-run with Romex 12/2 to the same pedestal for a new 120v gfci receptacle with 20A OCPD, is it ok to do that in the same conduit? If I did the math right…I have 4x #6 STR CU THHN and 3x #12 STR CU THHN…for a 28.06% fill capacity with 1” Sch40 PVC.
8) is it correct understanding that even though the ground wires on the #6 and the #12 are not considered “current carrying” that they still are considered for the fill capacity calculation? I was wondering if I could drop to 3/4” Sch40 PVC and still meet NEC?
9) do I need to use rigid Sch40 1” PVC? Or is it acceptable to use flexible Sch40 1” PVC? It seems like flexible will make it easier for me to route the conduit under the concrete and around the shrub roots.
10) my plan is to drop the circuit from the eve of the house (via non-human-accessible soffit) down the side of the house straight into the concrete walkway…then under the walkway (4’) to to edge of the property (another 2’ from walkway to property edge)…then along the edge of property edge (20’) to the concrete pad for the pedestal mount. When I go straight into and under the stamped concrete walkway…I’m hoping to avoid cutting a trench into it…and would like to go under it via as small a hole as possible. If I do this…and the walkway is >4” thick…does that mean that my burial cover requirement is only 4” (basically, just under the 4” think concrete is ok per NEC table 300.5)? Or is that only if the entire installation stays under the slab, and since my installation will eventually go to the property line in an 18” trench…then I still need to ensure the conduit is >8” under the 4” concrete walkway (so >12” cover per table 300.5)?
11) is there any code requirements requiring J/L-bolts embedded in the concrete? Or could anchors be used after the fact? What did you use?