ChargeRightTesla
Model S
Dual Motor
Premium sedan with exceptional range. Before you spend $2,000 to $8,000 on a panel upgrade you may not need, get a real NEC 220.82 load calculation from an IBEW Master Electrician.
Sharing this link prefills the calculator with your Tesla Model S.
The numbers we run
These specs feed directly into the NEC 220.82 load calculation for your home panel.
What your $12.99 ChargeRight assessment gives you
Built for the Tesla Model S. Same five NEC methods we run for every car.
Real NEC 220.82 load calculation
The same math an electrician does, broken out line by line so you can verify it.
AI panel photo safety check
Snap your panel. We flag FPE, Zinsco, Sylvania, double-tapped breakers, and overcrowded slots.
Confidence score (0 to 100)
Cross-validated against 12+ factors so you know how much to trust the verdict.
Upgrade scenarios with real costs
If you do need work, you see the options ranked by price, not the one your installer profits from.
Electrician call script
Show this to any installer. They will quote you fairly because they know you have receipts.
Tesla Model S charger questions, answered
The math comes from the same NEC 220.82 calculation we run in the assessment.
Do I need a panel upgrade for a Tesla Model S?
Not necessarily. The Tesla Model S draws up to 48A on Level 2 charging, which requires a 60A breaker under NEC continuous-load rules. Whether your panel can add that depends on its size and existing loads, many 200A panels and even some 100A panels have room. A NEC 220.82 load calculation is the only way to know before you spend $2,000 to $5,000 on a service upgrade.
What size charger does the Tesla Model S need?
The Tesla Model S Dual Motor accepts up to 11.5 kW (about 48A) on Level 2 AC charging. A matched 48A charger on a 60A breaker fully utilizes the car's onboard charger. A smaller 32A or 24A charger still works and may avoid a panel upgrade.
How long does it take to charge a Tesla Model S on Level 2?
At its maximum 11.5 kW Level 2 rate, a Tesla Model S takes about 8.3 hours to go from empty to full on its 95 kWh battery. Most owners charge overnight from 20% to 80%, which takes roughly 5.0 hours.
What breaker size is required for a Tesla Model S EV charger?
For the maximum 48A charging speed the Tesla Model S supports, NEC 625.41 requires a 60A breaker (continuous load = charger amps × 1.25). A smaller breaker is acceptable if you set the charger to a lower amperage.
What connector does the Tesla Model S use?
The Tesla Model S Dual Motor uses a Tesla connector for AC and DC fast charging. Most Level 2 home chargers ship with the matching plug or include an adapter.
Can a 100-amp panel handle a Tesla Model S charger?
Sometimes, especially with gas heat. A 100A panel has a safe continuous capacity of 80A. The Tesla Model S draws 48A at max Level 2 speed. Whether that fits depends on your existing loads (HVAC, range, dryer, water heater). Many 100A homes with gas heat can add a 24A or 32A charger without a service upgrade.