Can I put a 50 amp EV charger on a 125 amp panel?
Installing a 50-amp EV charger breaker is restricted when a main panel shows only 125 amps of capacity. Additionally, configuring wiring such as running Romex down inside a pipe instead of next to it creates further physical installation complications.
What people tried
Every workaround mentioned in the threads below. We haven’t tested any of them — and nobody here is claiming they worked.
Found another way around this?
Share your steps and trade-offs so fellow engineers don't have to reinvent the wheel. No account required.
- 1Running the charger off a sub panelDid this help you?
- 2Installing tandem or quad style breakers to make spaceDid this help you?
- 3Charging at night when the AC is less likely to be runningDid this help you?
- 4Install a junction box where existing metal-clad cable and metal conduit meet to transition and run appropriate individual wires.Did this help you?
- 5Asking electricians or forums for feasibility assessmentsDid this help you?
In their words
Unedited, grouped by where they were said, most upvoted first within each place, each linked to the thread it came from.
“So I'm wanting to install an ev charger at home. My main panel inside the house doesn't have any space for any additional breakers but I have a detached garage with an unused 50A breaker and my service is 200A so I should be good in that department.”source ↗
“What I am thinking is to run the line from the garage to the house (I believe its ran underground, ive included these little boxes that pop out of the ground) then run the line the rest of the way to the corner of the house where I'll want the charger. Does this seem feasible? Around what do you think it would cost?”source ↗
“How would we need to modify this to suit an EV charger and could we do it ourselves?”source ↗
“I want to add an outlet with romex and was hoping to run the wire down inside the pipe instead of running it next to it.”source ↗
“I want to install an EV charger (50 amp) breaker, but the main breaker on my panel shows only 125.”source ↗
Where this came up
People with this problem also raised
- 2No room for new wires in switch box
- 3Will adding new 20-amp circuits overload my electrical panel?
- 4Why does touching my breaker panel turn my electric dryer back on?
- 2Can I install or fix an electrical outlet myself?
- 27Electrician installed an outlet instead of a generator inlet box
- 2How to convert an electrical box into an outdoor outlet