New ESA Bulletin: Maximum Circuit Loading and Demand Factors

ESA

January 23, 2024

Bulletin 8-3-15: Maximum circuit loading and demand factors: Rules 8-102, 8-106, 8-200, 8-202 and 8-304

Issued October 2023 (Supersedes Bulletin 8-3-14)

Scope

1) Calculation of the minimum ampacity of service or feeder conductors for residential occupancies

  • a) Supplying one single dwelling unit (as defined in Section 0);
  • b) From a main service supplying two or more single dwelling units such as row-housing, triplex and quadruplex stacked units;
  • c) Supplying one dwelling unit (as defined in Section 0) such as apartment unit; and
  • d) From a main service supplying two or more dwelling units

2) Classification of different types of row-housing

3) Smoke alarm and carbon monoxide alarm loads on branch circuits

4) Additional loads to a single dwelling unit

5) Use of demonstrated load – Who is a “qualified person”?

6) Maximum number of LED luminaires on an existing circuit

7) Heat pumps load demand

You can find the full Bulletin HERE

ESA Bulletins

Related Articles

Latest Articles

  • Navigating Tariff Uncertainty as an Electrical Contractor

    April 15, 2025 By Matthew Biswas These three words put me into a catatonic shock – Supply Chain Disruption. It seems like just yesterday I was standing at a counter asking for products I’d bought 100’s of times before and being told they are on backorder with no expected delivery date. Circuit breakers, dimmers, panels,… Read More…

  • Four Ways Permanent Power Enahnces Outdoor Spaces

    Four Ways Permanent Power Enahnces Outdoor Spaces

    April 14, 2025 Today’s workplaces are expanding beyond the four walls of an office. As technology continues to evolve, employees are looking for new and alternative workspaces to inspire creativity and increase productivity. This includes taking their work to outdoor spaces. Bringing technology to outdoor spaces has become a challenge for facility managers and property… Read More…

  • CAF-FCA Provides Recomendations on Apprenticeship Investment

    CAF-FCA Provides Recomendations on Apprenticeship Investment

    April 13, 2025 CAF-FCA have provided an outline of actionable recommendations—developed through national consultation—to enhance accessibility, reduce financial barriers, and better align apprenticeship training with industry needs. Source Read More…

  • New Report: Preparing Alberta’s Buildings for Severe Weather

    New Report: Preparing Alberta’s Buildings for Severe Weather

    April 13, 2025 Alberta is facing more severe weather events, with rising temperatures, wildfires, and more frequent extreme storms threatening homes and businesses. Our report, Preparing Alberta’s Buildings for Severe Weather−written in partnership with the Alberta Ecotrust Retrofit Accelerator program−highlights the need for deep retrofits to ensure the province’s buildings can withstand these changing conditions. Four… Read More…

Changing Scene