There are a few major differences between the two types of installation options related to the power supply to the EV Charger itself.
1.) 14-50 NEMA Plug/Outlet - The EV Charger will ship with a pre-installed 14-50 NEMA plug attached to the device itself. This option is probably the easiest installation option if you already have a compatible 14-50 NEMA outlet nearby in the garage/installation location. This will allow you to get up to a 40A maximum charge - cannot be set higher since the NEMA plug itself is rated up to 40A.
2.) Hardwire - This option is possible by disconnecting the included NEMA plug from the charger and terminating your own hardwire into the EV Charger. The hardwire is a line from the breakers in your electrical panel directly to the EV Charger itself. If deciding to go this route, might be helpful to have a professional electrician install the hardline as variables like wire length can change the installation of that line. Using this installation option will allow for a maximum available charge rate of up to 48A, provided you're using a 60A+ breaker. Details about the hardwire installation option can be found on the Installation Guides starting on step 8a-1.
Which option to choose mostly depends on your local electrical system as well as your targeted charge rate for your vehicle. Many vehicles have limitations on the available charge rate, so that might have an impact as to which option you'd choose for your installation since many cars cannot charge at 48A even if using the Hardwire installation approach. If you have any questions about your specific installation scenario feel free to ask your local electrician or can reach out to Customer Support for any clarification as well.
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This knowledge base is pretty new for the Emporia team. Our goal is to provide all of the information we can to help you manage your energy in better ways. If this article wasn't helpful, or we could be more clarifying on any points please reach out to the Customer Support team and we'll certainly work to improve these guides.
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