Commercial Load Calculation Explained
5:26
Commercial load calculations use the same toolbox as a house — different input numbers.
In this lesson: occupancy-specific lighting rates (Table 220.12), a full worked example for a 10,000 sq ft retail store, why most commercial occupancies get NO lighting demand factor (unlike dwellings), 180 VA per receptacle, show window and sign circuit loads, the receptacle demand factor over 10,000 VA, and the continuous-load 125% rule.
Based on the 2023 NEC (Article 220).
