You Just Bought an EV. Now What?
Congratulations! You just dropped a couple of million rupees on a gorgeous new electric car like the Tata Nexon EV or MG ZS. Now comes the exciting part: installing the home wallbox charger. But here is where a lot of smart people make a very dumb mistake—they try to save a few bucks by hiring the cheapest local electrician they can find. Please, don’t do this.
An EV Charger is NOT a Washing Machine
A lot of local handymen will tell you, “Sir, it’s just a plug point, I will fix it in 500 rupees.” This is terrifying. A 7.2 kW EV charger draws around 32 Amps of continuous current for 8 to 10 hours straight. That is equivalent to running three heavy-duty air conditioners simultaneously on a single wire all night long. If that wire isn’t the absolute perfect gauge, it will melt.
The Earthing Problem
Electric cars are basically giant rolling computers. They are incredibly sensitive to electrical fluctuations. A certified EV charger electrician knows that your home MUST have a dedicated, deep earth pit with a resistance of less than 5 ohms. If your earthing is weak, the car’s onboard computer will literally refuse to charge to protect itself. A cheap electrician won’t even own a megger meter to test the earth pit.
What Could Go Wrong?
- Melted Wires: Substandard wires will heat up and melt inside your PVC conduits.
- Voided Warranty: If your car’s battery gets damaged due to a power surge from a poorly installed charger, the car company can void your battery warranty. Good luck replacing a ₹7 Lakh battery!
- Fire Hazard: Loose connections under continuous 32 Amp load cause arcing, which leads directly to electrical fires in your parking area.
The Takeaway
When you need an EV charger installed, search specifically for an EV charger electrician or an authorized electrical contractor. Ask them what size wire they plan to use (it should usually be at least 6 sq.mm or 10 sq.mm copper) and how they plan to test the earthing. Spend the extra money on a pro—it’s the best insurance policy for your new car.