2
retrofitted from Standalone to Paired.
Pairing Two Express 250s
The Express 250 can be installed either as a standalone system, or paired with another Express 250
using a DC connection to more flexibly share load. The two Power Modules in the base of each
charging station can be shared in any combination according to charging need. This allows high
power output in sites with space constraints.
To pair two Express 250 charging stations, all of the following are required:
• Additional conduit, ducting, or armored cable (according to region) correctly installed between
the two charging stations for DC conductors and Ethernet wiring
• Both Express 250s must have 62.5 kW power enabled (not allowed on stations only enabled for
50 kW)
• Both Express 250s must be provisioned for full power back to the panel (not allowed on “power
select” stations)
Initial Site Guidelines
An onsite evaluation is needed to determine conduit and wiring requirements from the panel to the
proposed parking spaces, as well as to measure cellular signal levels and identify suitable locations
for any necessary cellular signal booster equipment.
If you have pre-existing infrastructure or are using your own preferred electrical contractor to
prepare your site, a completed Construction Signoff Form is required to certify compliance with
electrical specification requirements, and to ensure everything was prepared to ChargePoint
specifications.
Plan for Future Charging Capacity
ChargePoint recommends that you plan to install charging stations for 5-10% of parking spaces, or
Important: All installers must be licensed electricians and complete an online training
course to become a ChargePoint certified installer. Installers who do not complete
installation training cannot access the ChargePoint Network to complete pinpointing and
station setup.To complete online training and become a certified installer, refer to
ChargePoint University at: chargepoint.com/installers or chargepoint.com/eu/installers
Important: Always check local codes or consult an engineer to ensure the site is prepared in
compliance with all applicable regulations. Local authorities might not allow a unit to
operate if it is not installed to code.
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