The ChargePoint Home Flex (model CPH50) is a versatile Level 2 electric vehicle (EV) charging station designed for home use. It provides a range of configurable amperage settings and supports both plug-in and hardwired installations. This article provides a comprehensive breakdown of the installation process, key specifications, and important considerations for U.S. consumers and licensed electricians. All information is derived from official documentation and technical resources provided by ChargePoint.
Installation Overview
The installation of the ChargePoint Home Flex must be carried out by a licensed electrician due to the electrical and safety requirements involved. The process begins with determining the desired amperage setting, which directly affects the charging speed and electrical configuration. The Home Flex supports amperage settings ranging from 16 amps to 50 amps, with the 32A and 40A settings being the most commonly recommended for optimal performance and compatibility with most EVs.
The installation method—whether plug-in or hardwired—depends on the electrical setup and local codes. Plug-in installations require a NEMA 6-50 or 14-50 receptacle, while hardwired installations necessitate a dedicated circuit and direct wiring to the electrical panel. Electricians must ensure that the circuit breaker and wiring are appropriately sized for the selected amperage and that the installation complies with the National Electrical Code (NEC).
Amperage Settings and Electrical Requirements
ChargePoint Home Flex offers six amperage settings: 16A, 24A, 32A, 40A, 48A, and 50A. Each setting corresponds to a specific charging speed and power output, as outlined in the table below:
| Amperage Setting | Estimated Range Per Hour | Maximum Output Power | Circuit Breaker Rating | Plug-in Installation | Hardwired Installation |
|---|---|---|---|---|---|
| 16A | 12 mi / 19 km | 3.8 kW | 20A | No | Yes |
| 24A | 18 mi / 29 km | 5.8 kW | 30A | No | Yes |
| 32A | 25 mi / 40 km | 7.7 kW | 40A | Yes | Yes |
| 40A | 30 mi / 48 km | 9.6 kW | 50A | Yes | Yes |
| 48A | 36 mi / 58 km | 11.5 kW | 60A | No | Yes |
| 50A | 37 mi / 60 km | 12 kW | 70A/80A | No | Yes |
The 32A and 40A settings are the most popular, as they balance charging speed with electrical panel compatibility. The 48A and 50A settings offer the fastest charging speeds but may require electrical panel upgrades. Electricians should assess the panel’s capacity and select the highest amperage the panel can support without exceeding its limits.
Plug-in installations are only suitable for circuits rated 40A or 50A. Hardwired installations, on the other hand, can be used for all amperage settings but may require additional electrical work to ensure proper configuration and safety.
Installation Methods
Plug-in Installation
Plug-in installations use a NEMA 6-50 or NEMA 14-50 receptacle and a 23-foot charging cable. This method is suitable for circuits rated 40A or 50A and allows for easier reconfiguration or replacement of the charging station. However, it is important to note that the input power cable cannot exceed 12 inches in length due to NEC requirements. This limitation ensures proper grounding and reduces the risk of electrical hazards.
Electricians should ensure that the receptacle is installed in a location that is easily accessible and complies with local codes. The Home Flex must be mounted securely, and the charging cable should be routed in a way that minimizes tripping hazards and protects it from damage.
Hardwired Installation
Hardwired installations require direct wiring to the electrical panel and are suitable for all amperage settings. This method is recommended for higher amperage settings and provides a more permanent and stable installation. Electricians must use the hardwire version of the Home Flex, which does not come with an input power cable. Instead, the electrician must connect the station directly to the electrical panel using appropriate wiring and conduit.
When converting a plug-in installation to a hardwired one, the electrician must remove the input power cable and ensure that the station is not powered during the process. The cable clip and wire clamps must be carefully removed without causing damage to the station’s internal components. The removed cable should be stored for potential future use.
Hardwired installations require a licensed electrician to set the amperage settings during the installation process. This ensures that the station operates at the correct amperage and does not exceed the capacity of the electrical panel or vehicle. Incorrect amperage settings can lead to circuit breaker trips and potential damage to the EV or charging station.
Activation and Configuration
After installation, the ChargePoint Home Flex must be activated using the ChargePoint app. Activation is necessary to enable the station’s smart features, such as remote monitoring, scheduling, and charging rate adjustments. Without activation, the station will operate in safe mode, limiting the maximum amperage to 16A.
To activate the station, users must download the ChargePoint app and follow the on-screen instructions. The app connects to the station via Wi-Fi, allowing users to configure settings and monitor charging sessions. If Wi-Fi is not available, a licensed electrician can still set the amperage using Bluetooth, but this limits the functionality of the smart features.
Users can also manually adjust the charging rate from within the app, up to 80% of the breaker amperage or the charger’s maximum-rated output. This feature allows for flexibility in charging speed, depending on the user’s needs and the electrical load on the home’s system.
Replacing an Existing Charger
Homeowners who already own a ChargePoint Home (models CPH25 or CPH12) can upgrade to the Home Flex by deactivating and removing the existing station. The process involves using the ChargePoint app to reset the old station to factory defaults and then uninstalling it from its mounting location. If the existing station is a plug-in model with a NEMA 6-50 receptacle, the Flex mounting template should be used to adjust the drilling holes by 1 inch lower than the original.
After uninstalling the old station, the electrician can proceed with the installation of the Home Flex, following the same steps as a new installation. This includes setting the amperage, configuring the installation method, and activating the station using the ChargePoint app.
Safety and Compliance
Safety is a critical consideration during the installation and operation of the ChargePoint Home Flex. The station includes an integrated charging circuit interrupting device (CCID) for protection against electrical faults. While GFCI breakers are not recommended for use with the Home Flex, electricians should consult local codes to ensure compliance.
Using a GFCI breaker with a plug-in installation may result in nuisance tripping and disrupt charging. In such cases, a hardwired installation is recommended to avoid potential issues. Additionally, electricians should ensure that the station is installed in a dry and well-ventilated area to prevent overheating and electrical hazards.
Cost Considerations
The cost of installing the ChargePoint Home Flex varies depending on several factors, including the location of the installation, the distance from the electrical panel, and the complexity of the electrical work required. Homeowners are advised to contact a licensed electrician for a detailed estimate.
ChargePoint also offers the Qmerit Installation Services for those who need assistance in finding a qualified electrician. This service connects users with certified professionals who can handle the installation and ensure compliance with local codes and regulations.
Conclusion
The ChargePoint Home Flex is a reliable and flexible solution for home EV charging. Its ability to support multiple amperage settings, installation methods, and smart features makes it a versatile option for a wide range of users. However, proper installation by a licensed electrician is essential to ensure safety, compliance, and optimal performance.
Homeowners should carefully consider their electrical setup, charging needs, and local regulations when planning the installation. By following the manufacturer’s guidelines and working with a qualified electrician, users can ensure a smooth and efficient installation process that meets their EV charging requirements.