A hardwired EV charger disconnect box is a switch, mounted near the charger, that lets the charger’s circuit be safely de-energized for service or in an emergency, and it is required by code in certain situations depending on the charger’s rating and where it is installed relative to the panel. For a hardwired charger, a disconnect provides a local means to cut power without going to the main panel. Understanding what it is and when it is needed helps you know what your installation may include.
Here is what a hardwired EV charger disconnect box is.
Disconnect requirements for EV charging equipment are defined by code and depend on the charger rating and installation, so whether one is required is determined by a licensed electrician following the applicable code.
A local means to cut power
A disconnect box (or disconnect switch) is a device that allows the power to the EV charger to be switched off locally, near the charger, rather than only at the main panel. For a hardwired charger, which is connected directly to the circuit rather than plugged in, a disconnect provides a convenient, safe way to de-energize the charger for maintenance, service, or an emergency. In effect, it is a dedicated off-switch for the charger’s circuit at the charger’s location.
Why a disconnect is used
A disconnect serves safety and practicality:
- Safe servicing, letting the charger be de-energized locally before work
- Emergency shutoff, providing a quick way to cut power at the charger
- Code compliance, where a disconnect is required
- Convenience, avoiding a trip to the main panel to isolate the charger.
For a significant hardwired load like an EV charger, a local disconnect is a sensible safety feature, and in some cases it is required.
When it is required
Whether a disconnect is required for a hardwired EV charger depends on the code and the installation, including factors such as the charger’s rating and where it is located relative to the panel. Code generally requires a disconnecting means for EV charging equipment in certain situations, for example for higher-rated equipment or where the charger is not within sight of the panel. The specific requirement is defined by code, so a licensed electrician determines whether your installation needs a disconnect based on your charger and its location.
Where it is installed
When a disconnect is used, it is mounted near the charger, in a location where it can be readily reached to cut power, within the requirements of the code (such as being within sight of or near the equipment). This placement makes it effective as a local means to de-energize the charger. An electrician installs it in the appropriate location as part of the charger installation.
Determined by an electrician
Because whether a disconnect is required, and how it is installed, depends on the code, the charger’s rating, and the installation, a licensed electrician determines and installs it as needed. They assess whether your hardwired charger requires a disconnect, select and install an appropriate one, and ensure the installation meets code. If a disconnect is part of your installation, it is there for safe servicing and code compliance, which the electrician handles.
A hardwired EV charger disconnect box is a switch near the charger that lets its circuit be safely de-energized for service or in an emergency, providing a local means to cut power without going to the main panel. It is required by code in certain situations depending on the charger’s rating and location relative to the panel. A licensed electrician determines whether your installation needs one and installs it appropriately.
Stella Electric installs hardwired EV chargers with disconnects where required for homeowners across the Baltimore area and throughout Maryland, with flat-rate pricing and no overtime charges. If you are installing a hardwired charger, we handle it to code. Financing is available on qualifying projects.
