Preview — in active development. The vault sizing calculator runs in production today as part of the underground agent’s tool catalog, but it isn’t exposed as a standalone HTTP service yet. We’re extracting it as vault-sizing-api in an upcoming release. Want early access? Email hello@epcstudio.io.

The vault sizing service selects an appropriate vault from the catalog given equipment + conduit requirements, and validates the layout against NEC 110.34 working space, bending radius, and padmount clearance rules.

What it will do

  • Catalog selection — given equipment and conduit count, return the smallest vault that fits, including primary and secondary padmount enclosures plus S&C PMH catalogs
  • NEC 110.34 working space — verify equipment access aisles meet code working-space depth, width, and headroom
  • Cable bending radius — verify minimum bending radius for the largest cable in each conduit path
  • Padmount clearances — verify front, side, and rear clearances around padmount equipment per utility standards

Planned shape

# preview — actual endpoint shape may shift before launch
curl https://$VERTICAL_AI_BASE_URL/recommend \
  -H "Authorization: Bearer $VERTICAL_AI_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "equipment": [
      { "type": "padmount_transformer", "kva": 500 },
      { "type": "switchgear", "model": "PMH-9" }
    ],
    "conduits": [
      { "size_in": 5, "count": 4, "voltage_class": "primary" },
      { "size_in": 3, "count": 6, "voltage_class": "secondary" }
    ]
  }'

Until it ships

You can call the same calculation today through the Underground gateway → by asking the agent for vault sizing recommendations.

See also