Do I Need a Panel Upgrade for a Level 2 EV Charger?
When a panel upgrade is actually needed for EV charging — and when it isn't.
Short answer
Not always. A proper load calculation determines if your existing service supports the additional charger load. Many 200A homes are fine; older 100A homes often need an upgrade.
Start with a load calculation
NEC requires a load calculation before adding a major continuous load. We perform this before quoting any EV install.
When an upgrade is needed
Repeated breaker trips. Old 100A service. Federal Pacific / Zinsco / Challenger panels. Multiple EVs planned. Solar or battery storage planned.
FAQ
Will I know in advance?
Yes. We confirm before the install date and quote the upgrade separately if needed.
About the author
Civitas Electrical Team
Austin-based TDLR-licensed electrical contractor. We share practical, field-tested guidance for homeowners, property managers, and small commercial clients.
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