Do I need a permit for ev charger installation in Unincorporated Porter County?

Most likely yes. Ev charger installation usually requires a permit in Indiana. Confirm the specifics with Unincorporated Porter County.

Indiana's Section E3702.13 requires outlets installed for charging electric vehicles to be supplied by an individual branch circuit that supplies no other outlets. Residential electrical work follows Chapters 34 to 43 of the 2020 Indiana Residential Code, with the Indiana Electrical Code (675 IAC 17, 2009 edition based on the 2008 NEC) allowed instead and required for equipment those chapters do not address; permits and inspections are issued locally. Electrician and HVAC licensing in Indiana is set by local units, which may license specific trades (IC 36-1-22-6), so owner and contractor rules vary by city, town, or county. Indiana's R314.2.2 and R315.2.2 exempt electrical installations in existing rooms, other than new or relocated bedrooms, from the rule that permitted alterations trigger new-dwelling smoke and carbon monoxide alarms. This installation adds a 240-volt circuit or a hardwired charger, or changes the electrical panel. New circuits and panel work are electrical work that normally needs an electrical permit and inspection wherever an electrical permit program exists. A panel upgrade or new service usually also involves your electric utility, which may need to disconnect and reconnect power, so call them early. Many places require a licensed electrician for this work. Where a homeowner may do their own wiring, the permit and inspection still apply.