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NABCEP PVTS study materials
NABCEP PVTS study resources

NABCEP PVTS: Domain 6: Permitting, Interconnection, and Project Delivery

NABCEP PVTS · Work through your exam, one topic at a time.

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Domain 6: Permitting, Interconnection, and Project Delivery

Domain 6 covers delivery after signature: permits, interconnection, installation oversight, inspection, and permission to operate. Items test the order of operations, who approves what, and why energizing early is a compliance and safety failure.

Permitting and interconnection

  • Building and electrical permit from the AHJ, plus a structural letter or stamped plans where required; fire setbacks and zoning may also apply.
  • Interconnection application to the utility: load-side or supply-side connection, inverter certification (IEEE 1547-2018 / UL 1741 SB smart inverter), and the applicable fast-track or study screen.
  • Net metering or export compensation is usually a separate application from interconnection.
  • Rebate and incentive reservations often have deadlines tied to installation or in-service dates - reserve early, because funds are finite.

Sequence and closeout

  • Typical order: site survey, design, incentive reservation, permit and interconnection filings, installation, AHJ inspection, utility inspection and permission to operate, monitoring handoff.
  • Never energize before written PTO; the utility can require removal, and the customer may lose compensation.
  • Closeout: as-built drawings, labeling, warranty registration, monitoring setup, O&M instructions, and proof-of-payment documents for incentive claims.

Worked example

A rebate requires the system to be installed and inspected by December 31. The utility takes 30 business days for interconnection review plus 10 days for inspection after a passing AHJ inspection. Working backward: AHJ inspection by about November 15, installation complete by November 1, permit and interconnection submitted by early September. Starting in October cannot meet the deadline, so the proposal should disclose the risk rather than promise the rebate.

Traps

Promising an incentive before reservation is confirmed; scheduling installation before permit issuance; assuming AHJ approval equals PTO; forgetting that a service upgrade or transformer change adds utility review time.