Is it safe to keep resetting the breaker?
No, repeatedly resetting a tripping breaker is unsafe, because the breaker is reacting to a real problem such as overload or a fault. Stop using the charger and call a licensed electrician to find the cause before charging again. Do not open the panel or the charger yourself.
Heat from a loose connection or a worn outlet can damage the wiring and start a fire. Warm plugs, a burning smell, discoloration or sparking are signs to stop immediately.
If any of these appear, leave the charger unplugged and do not open the panel. Describe what you saw when you call.
Before calling, note when it trips. Does it happen right when charging starts, after an hour, or only when the AC is running? That timing helps the electrician narrow down whether it is a load issue, a heat issue or a fault.
What are the common causes of a tripping breaker?
Common causes include a breaker or wire too small for the continuous load, a loose terminal, a worn or overheated outlet, a ground fault in the charger or cable, and a panel that is overloaded when the AC also runs.
Charging is a continuous load, so the breaker should be sized at one and a quarter times the charger's amps. An undersized breaker trips under normal use.
Arizona summers add AC load at the same time as charging. The panel may be right at its limit during afternoon heat.
A breaker that trips a few minutes after charging starts often points to an undersized circuit or a hot connection. One that trips immediately may point to a ground fault in the charger or cable.
Could the charger or cable be the problem?
Yes, a faulty charger, damaged cable or water intrusion can cause ground faults that trip a GFCI breaker or the charger itself. Inspect the cable from a safe distance for cuts or burns, and try nothing that involves opening the unit.
Monsoon moisture and UV can affect cables and connectors left outside. A surge can also damage charger electronics.
An electrician can test the circuit to tell whether the problem is the equipment or the wiring. Contact the manufacturer for equipment faults.
Do not swap in a larger breaker to stop the tripping. The breaker protects the wire, and a bigger one on thin wire can let the wire overheat. That is a fire risk, and the fix is to find the cause.
What will an electrician check?
An electrician tests the breaker, wire size, terminals and outlet for heat damage or looseness, measures voltage and load, checks for ground faults and reviews the panel's capacity. Findings are explained before any repair or replacement. You get a clear explanation before any repair is done.
The fix may be a new breaker, a replaced outlet, tightened or repaired connections, a correctly sized circuit, or load management.
If the panel is the limit, options include a subpanel or panel upgrade. Call Vortech at (623) 321-4177 or request a quote.
If you charge in a hot garage, mention it. Heat raises resistance and can make marginal connections worse, and an electrician can recommend better ventilation or a different mounting spot.
Need an EV Charger Installed?
Vortech installs Level 2 home chargers across Phoenix, Glendale, Peoria, Sun City, Sun City West and Surprise. See EV charger installation or read the full guide on this topic.
More questions: Home EV Charger Installation: 12 Most Asked Questions Answered