TryBuildCalc

Lighting Load Verification Checklist

Essential Checklist+

Complete these critical checks before approving the work or proceeding to the next construction stage.

✓11 Inspection Points
✓4 Verification Categories
✓Occupancy & Floor Area Input Accuracy+
  • Correct occupancy classification selected, matching the building's actual use
  • Floor area measured per NEC's outside-dimensions rule, not usable/carpet area
✓NEC Demand Factor & Load Calculation+
  • Demand factor category confirmed correct for the occupancy — not every occupancy gets a reduction
  • Tiered demand factor brackets applied to the correct VA ranges, not a flat percentage of the whole load
  • Connected load (before demand factor) used for branch circuit count; demand load (after) used for feeder/service sizing only — not swapped
  • Hospital/hotel areas with lighting on continuously (operating rooms, ballrooms, dining rooms) excluded from the demand factor reduction
✓Show Window & Track Lighting+
  • Show window and track lighting loads confirmed never reduced by the Table 220.45 demand factor
✓Branch Circuit Sizing & Code Compliance+
  • Circuit voltage selection matches the actual electrical system serving the space
  • 80% continuous-load branch circuit rule confirmed applied, not skipped
  • AFCI/GFCI protection requirements checked separately for the specific circuits and locations involved
  • Licensed electrician review required before installation, not a substitute for professional design
Full QC Checklist+

Verify occupancy/floor area input accuracy, NEC demand factor and load calculation, show window/track lighting, and branch circuit sizing/code compliance.

✓21 Inspection Points
✓4 Verification Categories
✓Occupancy & Floor Area Input Accuracy+
  • Correct occupancy classification selected, matching the building's actual use
  • Floor area measured per NEC's outside-dimensions rule, not usable/carpet area
  • Mixed-occupancy building split into separate calculations per occupancy area, not averaged
  • Custom VA/ft² value (if used) sourced from the actual NEC table for an occupancy not listed here
  • Future use, tenant changes, or expansion considered before finalizing circuit count
✓NEC Demand Factor & Load Calculation+
  • Demand factor category confirmed correct for the occupancy — not every occupancy gets a reduction
  • Tiered demand factor brackets applied to the correct VA ranges, not a flat percentage of the whole load
  • Connected load (before demand factor) used for branch circuit count; demand load (after) used for feeder/service sizing only — not swapped
  • Hospital/hotel areas with lighting on continuously (operating rooms, ballrooms, dining rooms) excluded from the demand factor reduction
  • Single-phase VA/voltage estimate recognized as a planning figure, not a substitute for a real 3-phase panel schedule
✓Show Window & Track Lighting+
  • Show window length measured horizontally along its base, not window height or perimeter
  • Show window and track lighting loads confirmed never reduced by the Table 220.45 demand factor
  • Track lighting length includes the full total of all track runs in the space, not just one section
  • Track lighting exemption checked for dwelling units and hotel/motel guest rooms
  • Multicircuit track lighting load distributed evenly across its supply circuits, not loaded onto one
✓Branch Circuit Sizing & Code Compliance+
  • Circuit voltage selection matches the actual electrical system serving the space
  • 80% continuous-load branch circuit rule confirmed applied, not skipped
  • Breaker size selection matches what's actually available/planned in the panel
  • Circuits evenly distributed and balanced across the panel/phases, not concentrated in one area
  • AFCI/GFCI protection requirements checked separately for the specific circuits and locations involved
  • Licensed electrician review required before installation, not a substitute for professional design
Inspection Notes+
Use the latest approved drawings, specifications, and site measurements.
Complete all critical checks before proceeding to the next work stage.
Record deviations and confirm rectification where required.

Related Calculators & Guides

Lighting Load CalculatorOpen the related calculator and verify the current project inputs.

FAQ

Use it after collecting the project inputs and again before approving or closing the relevant work stage.
No. It supports verification but does not replace approved drawings, specifications, codes, manufacturer requirements, or professional inspection.