Generator Size / Wattage Verification Checklist PDF

Full QC Checklist+

Verify appliance load input accuracy, starting watts/surge calculation, safety margin/generator selection, and installation/code compliance.

✓21 Inspection Points

✓4 Verification Categories

✓Appliance Load Input Accuracy+

Actual nameplate running/starting watts used for major appliances, not guessed from a generic chart
All loads you actually intend to run during an outage are included, including easy-to-forget ones
Non-essential loads excluded, rather than adding everything in the house "just in case"
Every motor-driven appliance has a starting watts value entered separately from its running watts
Lighting and small electronics load realistically estimated, not omitted entirely

✓Starting Watts / Surge Calculation+

Confirmed only the single largest motor's incremental surge is added, not every motor's surge summed
Risk of two large motors starting at the same moment considered for your actual usage pattern
Resistive loads (heating elements, incandescent lighting, most electronics) correctly show no significant starting surge
HVAC compressor (if included) checked as the likely single largest starting-watts driver
Load-management/sequencing capability of your transfer switch considered — it can reduce the generator size actually needed

✓Safety Margin & Generator Selection+

Safety margin percentage confirmed appropriate for the intended duty cycle, not left at a default without thought
Final recommended generator size confirmed as a genuine standard size, rounded up
Fuel type and expected runtime/duty cycle considered separately from the wattage sizing itself
Altitude and ambient temperature derating considered for extreme installation conditions
Portable vs. whole-house standby generator choice confirmed to match your actual intended use case

✓Installation & Code Compliance+

Transfer switch (manual or automatic) confirmed for any generator connected to household wiring
GFCI protection confirmed for cords and receptacles used with a portable generator, per applicable code
Generator placement confirmed well away from windows/doors/vents, per carbon monoxide safety guidance
Whole-house/permanent standby installation's load calculation reviewed by a licensed electrician, not based on this estimate alone
Permit and inspection requirements confirmed for a permanent generator installation
Extension cords used with a portable generator are heavy-gauge, outdoor-rated, and adequately sized for the load and distance

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.

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.

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.