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Code Reference
Quick Guides.

Four one-page print cards covering the NEC and IBC code requirements that show up most in commercial electrical estimates. Open any guide, print to PDF, keep it on your desk.

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Estimating-focused
NEC 2023 · IBC 2021 · WA L&I
NEC · Article 210.8 1 page · Print-ready
NEC GFCI Requirements
NEC 2023 · Article 210.8 · Dwelling + Commercial
Complete GFCI location requirements for both dwelling and commercial occupancies. The most common missed scope item in commercial electrical bids.
  • All required locations for dwelling and commercial occupancies
  • GFCI methods accepted (receptacle, breaker, downstream protection)
  • Medical occupancy special requirements (Article 517 flag)
  • Key exceptions and exemptions
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NEC · Article 210.12 1 page · Print-ready
NEC AFCI Requirements
NEC 2023 · Article 210.12 · Dwelling + Other Occupancies
AFCI requirements by occupancy type and NEC adoption year. Includes the metal conduit exception that eliminates AFCI requirements on conduit-wired projects.
  • Dwelling unit AFCI requirements — all locations, adoption year timeline
  • Hotel, motel, and healthcare AFCI requirements (210.12(D))
  • Metal conduit exception — when AFCI is not required
  • WA State adoption status and AFCI/GFCI combination option
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WA L&I · RCW 39.12 1 page · Print-ready
WA Prevailing Wage Reference
RCW 39.12 · WAC 296-127 · WA L&I Prevailing Wage Section
What triggers prevailing wage in Washington, representative electrician rates by county, compliance requirements, and the penalty exposure for getting it wrong.
  • Project types that trigger and don't trigger prevailing wage
  • Representative Thurston and King County journeyman rates with fringes
  • Compliance requirements: intent, affidavit, certified payroll, ratio
  • Penalty exposure table + L&I contact information
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IBC 2021 · NEC Art. 517 1 page · Print-ready
IBC Occupancy & Electrical Impact
IBC 2021 · NEC 2023 · Occupancy Groups A through U
How IBC occupancy classification drives your electrical scope — emergency lighting, fire alarm systems, Article 517 healthcare requirements, and mixed-occupancy situations.
  • All IBC occupancy groups with electrical scope implications
  • Article 517 healthcare essential electrical system breakdown
  • Emergency lighting requirements: level, transfer time, testing
  • Mixed occupancy flag — the most common scope underestimate
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How to use these guides: Open the guide relevant to your project, use Ctrl+P or File → Print to save as PDF (select "Save as PDF" in the print dialog). Print to 1 page by selecting "Fit to page" in print settings. Keep the PDF in your project folder or print it for your estimating binder. These are reference cards for estimating — always verify requirements with your local AHJ before submitting a bid or for permit applications.

Vernier Checks All of These Automatically

Mode D plan review runs every uploaded drawing set against NEC, IBC, and NFPA requirements and flags code issues, RFI candidates, and VE opportunities — before you submit the bid.

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