My EV Charger Keeps Tripping: Solution for Major EV Charger Models

Feeling super frustrated because my EV charger keeps tripping circuit breaker? Top reasons are overloads and grounding issues, plus malfunctioning of Tesla, PodPoint, and JuiceBox in some cases.

Experiencing a tripping circuit breaker with your Pod Point EV charger or any car charger can be frustrating and even alarming, especially when you rely on a consistent charge for your electric vehicle.

This issue affects various EV charger models like ChargePoint breaker tripping along with other brands like Tesla, ClipperCreek, JuiceBox, and Blink.

In this guide, we cover why your EV charger keeps tripping circuit breaker and provide solutions tailored to different charger types in the U.S. market.

EV Charger Keeps Tripping Circuit Breaker: Causes

It usually stems from factors such as electrical overload, installation issues with a level 2 EV charger, grounding problems, and old or inadequate breakers.

Addressing these causes is essential to ensure a reliable, safe charging experience.

1. Electrical Overload

• Description: EV chargers, especially high-powered Level 2 and Level 3 models, can overload a standard circuit if not adequately prepared to handle the power demand.
• Solution: For models like the Tesla Wall Connector or ChargePoint Home Flex (both of which can pull significant power), a dedicated 40-50 amp circuit breaker is usually required. Upgrading your electrical panel to support this load is best handled by a licensed electrician.

2. EV Charger Ground Fault & Fix

• Description: Ground faults happen when electrical current diverts from its intended path, often due to degraded wiring or a defect in the charger unit.
• Solution: Many chargers, like JuiceBox and Blink models, include Ground Fault Circuit Interrupter (GFCI) protection to detect and prevent ground faults. If your charger doesn’t have GFCI protection, install it in the circuit or consult an electrician for an inspection.

3. Current Leakage

• Description: Over time, wear and tear on the charger’s internal components can result in current leakage, which will trip the breaker as a protective measure.
• Solution: Use a multimeter to check for current leakage (if familiar with electrical systems), or have an electrician inspect your setup, especially for high-use models like the Tesla Wall Connector or ChargePoint Home chargers.

4. Old or Underrated Breaker

• Description: Many older homes are not equipped with circuit breakers that can handle the high, continuous loads of EV chargers.
• Solution: Upgrading to a modern, high-amp breaker rated specifically for EV chargers-ideally installed by a professional-can prevent unnecessary trips. For instance, most Level 2 chargers, like Blink HQ 150 and ChargePoint Home Flex, require a 30-50 amp circuit breaker.

Troubleshooting Car Charger Tripping

Each EV charger model has specific requirements and troubleshooting solutions. Here’s a comprehensive list to address the most popular chargers on the U.S. market.

Tesla Wall Connector Tripping Fix

• Problem: Frequent circuit breaker trips due to high current demand.
• Solution: Tesla Wall Connectors require a dedicated 60-amp circuit breaker and 240-volt outlet. Verify that your installation meets Tesla’s specifications and check for overheating or current leakage. Ensure the firmware is up-to-date, as Tesla’s updates may resolve tripping issues. This is really helpful in Troubleshooting Tesla Model 3 Charger Tripping Breaker Issues.

ChargePoint Home Flex Tripping Fix

• Problem: Grounding and overloads are common causes of breaker trips.
• Solution: ChargePoint Home Flex allows adjustable amperage to match your home’s capacity. Ensure it’s set correctly and inspect for loose connections and proper grounding. Check that the wiring gauge matches the selected amperage.

JuiceBox Tripping Breaker Fix

• Problem: High amp draw often causes overload trips.
• Solution: Connect JuiceBox 40 to a 40-amp breaker and JuiceBox 48 to a 48-amp breaker. If you’re using an extension cord, make sure it’s heavy-duty and rated for high amperage.

Blink HQ 150 Charger Tripping Fix

• Problem: Susceptible to overheating and circuit sizing issues.
• Solution: Place the charger in a ventilated area and use a dedicated circuit breaker. Inspect for loose connections, as these can contribute to frequent tripping.

Grizzl-E Classic

• Problem: Can trip the breaker due to insufficient circuit amperage or improper grounding.
• Solution: Grizzl-E Classic works best with a dedicated 40-amp breaker. Make sure the outlet and wiring are suitable for continuous high-power charging. For outdoor installations, ensure proper grounding to prevent ground faults.

Siemens VersiCharge Tripping Fix

• Problem: Power surges or voltage drops, especially in older home electrical systems, can cause breaker trips.
• Solution: Siemens VersiCharge typically needs a 30-40 amp circuit breaker. If power fluctuations are frequent, consider adding a surge protector. Regularly inspect the wiring and replace any degraded cables.

ClipperCreek HCS-40 Tripping Fix

• Problem: Circuit overloads and overheating may trip the breaker.
• Solution: The ClipperCreek HCS-40 requires a dedicated 32-amp breaker. Ensure the unit is not exposed to direct sunlight or high temperatures. Check for any signs of wiring damage, and upgrade to thicker wires if you notice consistent overheating.

Enel X JuiceNet Tripping Solution

• Problem: Tripping often occurs due to high power demand on shared circuits.
• Solution: Ensure the Enel X JuiceNet is on a dedicated circuit with a 40-amp breaker to prevent overloads. For outdoor setups, inspect for moisture in the outlet, as it can cause ground faults and trigger breaker trips.

Bosch Level 2 EV Charger Tripping Breaker

• Problem: Faulty or worn wiring leading to current leakage can trip the breaker.
• Solution: Bosch Level 2 chargers generally require a 30-amp dedicated breaker. Regularly check wiring for wear and replace any degraded parts. If leakage is detected, contact a licensed electrician for an inspection.

Wallbox Pulsar Plus Tripping Problem

• Problem: High demand can cause tripping if installed on an undersized breaker.
• Solution: Wallbox Pulsar Plus operates best with a 40-amp breaker. Inspect the circuit breaker and wiring for compatibility, especially if the charger is configured to deliver maximum amperage.

Emporia Smart Level 2 Charger Tripping Problem

• Problem: Frequent tripping may result from poor ventilation or incorrect breaker rating.
• Solution: The Emporia Smart Charger should be installed on a dedicated 50-amp circuit. Ensure that the charger is in a well-ventilated location and that the wiring and breaker can handle the high output without overheating.

AeroVironment TurboCord Tripping Breaker

• Problem: Overloads from shared circuits often trip the breaker.
• Solution: TurboCord is a portable Level 2 charger, so use it with a dedicated 20-amp breaker, especially if charging in a garage. Avoid using regular extension cords, as they may lead to overheating and trips.

EVBox Circuit Breaker Tripping Issue Fixed

• Problem: Power fluctuations or current leakage are typical culprits.
• Solution: EVBox Elvi typically requires a 32-amp breaker. If you experience power surges, consider installing a surge protector. Check for water intrusion in outdoor setups, as it can lead to ground faults.

What MCB is required for an EV charger?

The MCB (Miniature Circuit Breaker) rating required for an EV charger depends on the charger’s power rating and installation type:

For Home/Residential Chargers:

• 3.7kW single-phase: 20A MCB
• 7kW single-phase: 32A MCB
• 11kW three-phase: 16A MCB (per phase)
• 22kW three-phase: 32A MCB (per phase)

For Commercial/Fast Chargers:

• 50kW DC fast chargers: Typically require 80-100A MCBs
• 150kW+ ultra-fast chargers: May need 200A+ protection

Key Considerations:

The MCB rating should be approximately 125% of the charger’s continuous current draw to account for safety margins and prevent nuisance trips. For example, a 32A charger would typically use a 40A MCB.

Additional Requirements:

• RCD (Residual Current Device): Usually 30mA Type B RCD for DC fault protection
• SPD (Surge Protection Device): Recommended for outdoor installations
• Isolation switch: Required for maintenance

Installation Standards:

• Must comply with local electrical codes (NEC in US, BS 7671 in UK, etc.)
• Professional installation by qualified electrician required
• Proper earthing and bonding essential

Follow our guide on how to select circuit breaker for my ev charger or consult the charger manufacturer’s specifications and local electrical codes, as requirements can vary by region and specific product. A qualified electrician should size the protection devices based on cable ratings, installation method, and ambient conditions.

Note that the MCB rating is always sized above the charger’s current rating to provide proper protection without nuisance tripping. Commercial installations also require additional monitoring systems and often have more stringent safety requirements.

What is the best breaker for EV charger?

The best breaker for your EV charger depends on your charger’s amperage, but here are the most common configurations that don’t cause tripping in MOST cases:

For 40-amp EV chargers (most popular): Use a 50-amp double-pole breaker. This follows the NEC requirement of sizing the breaker at 125% of the continuous load (40 × 1.25 = 50 amps).

For 32-amp chargers: Use a 40-amp double-pole breaker.

For 48-amp chargers: Use a 60-amp double-pole breaker.

Key requirements for any EV charger breaker:

• Double-pole design – EV chargers need 240V, so you need a breaker that covers both hot legs
• Brand compatibility – Use the same brand as your electrical panel (Square D, Eaton, GE, etc.)
• GFCI protection – Many codes now require GFCI breakers for EV charging circuits, especially in garages

Top EV Breaker Brands in the Market

Square D – Industry leader known for reliability

• Homeline series (budget-friendly)
• QO series (premium, commercial-grade)

Eaton – Trusted by professionals

• CH series (residential)
• BR series (cost-effective option)

General Electric (GE) – Long-established brand

• THQL series (standard residential)
• THQP series (space-saving thin design)

Siemens – German engineering excellence

• QP series (reliable performance)
• Murray brand (budget option)

Cutler-Hammer (now Eaton) – Heavy-duty applications

The 50-amp breaker for a 40-amp charger is typically the sweet spot for most residential installations, offering fast charging while being compatible with most home electrical systems.

Always have a licensed electrician verify compatibility and handle the installation to ensure safety and code compliance.

FAQ: Common Questions About EV Charger Circuit Breaker Trips

Can frequent tripping damage my EV charger?

Yes, repeated trips can strain the charger’s internal components, especially with high-powered models like the Tesla Wall Connector and JuiceBox 48. Consult a professional to ensure your electrical setup is compatible with your charger’s needs.

Do I need a dedicated circuit for every EV charger?

Yes, EV chargers generally require a dedicated circuit with a specific breaker rating (typically 30-60 amps). Shared circuits can overload and cause tripping, especially with high-power Level 2 chargers like those from ChargePoint and Blink.

Do EV chargers need a GFCI breaker?

For safety, installing a GFCI on EV charging circuits is advisable, particularly in outdoor locations. Some chargers, like JuiceBox and Grizzl-E, already include GFCI protection, but others may require an external GFCI breaker for added safety.

Conclusion

The issue of EV Charger keeps tripping circuit breaker stems from overloaded circuits (in 20% cases as per my experinece) and ground faults (75% cases) as well as rusted breakers especially when using powerful Level 2 supporting charging station models such as Tesla or JuiceBox.

The fixing process requires ev engineer to verify correct circuit breaker sizing and ground connection also including a seperate or dedicated circuit breaker implementation while you should call an official company representative to examine your setup if you have doubts about its functioning.