Installing an EV Charger in a Detached Garage: What to Know
A detached garage is a great place to charge, but getting power there takes more planning. Here's what's involved and what to ask an electrician.
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Key takeaways
- Power usually reaches the garage through a buried conduit or an existing subpanel.
- Trenching distance and existing wiring are the biggest cost factors.
- Permits and a licensed electrician are a must for this kind of job.
Getting power there
If the garage already has a subpanel with enough capacity, the charger may be a short run from it. If not, an electrician may run a new feeder underground in conduit, following code requirements for burial depth.
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Costs to expect
Trenching, conduit and long wire runs make detached-garage installs pricier than attached ones. A lower-amp charger can reduce wire size and cost if it covers your daily driving.
Pick the right charger
If the garage isn't insulated, choose a charger and cable rated for cold, and consider Wi-Fi range if you want app scheduling.
Safety note: This article is general information, not professional electrical advice. Working with 240V circuits can cause serious injury or fire. Hire a licensed electrician and follow local codes and permit requirements.
Sources & further reading
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LarryLeoLarryLeo started EV Charging while researching his own next car purchase. He digs into the pros, cons and real cost savings of going electric — using government, standards-body and manufacturer sources — and shares what he finds so other buyers can decide with confidence.
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