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Service load calculation playbook

Goal​

Produce a compliant service load calculation using the correct method and assumptions.

Inputs you must know before you start​

  • Load list and connected load details.
  • Dwelling vs non-dwelling calculation method.
  • Appliance and HVAC load ratings.
  • Demand factor allowances and constraints.

The path (in order)​

  1. Select the correct calculation method for the project.
  2. List all required load categories.
  3. Apply demand factors and optional method rules.
  4. Calculate final demand load and document steps.
  5. Translate demand load to service size.

This is​

A step-by-step checklist for service load calculations.

This is not​

A utility service approval or campus-level load study.

Inspection-ready checklist​

  • Calculation method selected and documented.
  • Load categories complete.
  • Demand factors applied correctly.
  • Final demand load recorded.

Worked example​

A dwelling service uses the optional method, applies demand factors to general lighting, includes appliance and HVAC loads, and documents the final demand for service sizing.

Cross references​

  • Primary: 220.42, 220.82
  • Secondary: 220.40

Related

Related wrappers and playbooks