TL;DR
A residential load calculation is the NEC Article 220 arithmetic that totals a dwelling's electrical demand—square footage, appliances, HVAC, ranges, EV charging—with demand factors applied, to prove the service and panel can carry it. Electricians run one before adding a major load such as a 48-amp charger or heat pump, since the result decides between a simple breaker addition, load management hardware, or a service upgrade.
What it means
A residential load calculation is the NEC Article 220 arithmetic that totals a dwelling's electrical demand—square footage, appliances, HVAC, ranges, EV charging—with demand factors applied, to prove the service and panel can carry it. Electricians run one before adding a major load such as a 48-amp charger or heat pump, since the result decides between a simple breaker addition, load management hardware, or a service upgrade. Permit offices increasingly require the worksheet with the application.
Where it sits in the glossary
Residential load calculation is part of the Trade jargon group inside the ProFix Directory glossary. Browse every term in this category from the glossary index.
Why Ohio homeowners should know it
This is a term Ohio homeowners encounter when reading contractor quotes, hiring paperwork, or inspection reports. Understanding it well enough to ask one good follow-up question is usually all the protection a homeowner needs.
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See also
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