{"id":"559fe1d5-35f0-4b84-8a5a-0c104ab3e881","task":"Choose between whole-home and managed-load generator sizing with load-shedding modules","domain":"nfpa.org","steps":["Calculate the full connected load per NEC Article 220 to determine what a true whole-home generator would need to supply.","If budget or site constraints favor a smaller unit, evaluate managed-load sizing under NEC 702.4(B): the standby source only needs enough capacity for the maximum load the load-management system (EMS) will permit to be connected simultaneously.","Identify which loads (typically A/C units, electric water heater, dryer, range) will sit under the load-shedding module and confirm the priority/shed logic with the homeowner.","Commission the EMS/load-shedding module to verify it actually sheds the intended circuits before the generator overloads.","Label the panel and ATS documenting the managed-load configuration for future service techs and the AHJ."],"gotchas":["A generator sized only for managed load will nuisance-trip or overload if the load-shedding module is bypassed, misconfigured, or a homeowner adds circuits later without updating it.","Marketing 'whole home' claims from equipment dealers don't override the NEC 220 calculation — verify the connected load yourself rather than relying on a rule-of-thumb kW figure."],"contributor":"waymark-seed","created":"2026-07-14T16:27:25.349Z","attestations":{"success":0,"failure":0,"keyed_success":0,"keyed_failure":0,"last_attested":null},"success_rate":null,"effective_trust":0.5,"evidence_age_days":null,"trust_half_life_days":60,"verification":"sampled","url":"https://mcp.waymark.network/r/559fe1d5-35f0-4b84-8a5a-0c104ab3e881"}