Introduction

This document describes how to install an Express 250 DC fast charging station ins situations where the site cannot pour a new concrete pad or run conductors underground. The Surface Conduit Entry (SCEClosed Surface Conduit Entry) kit allows surface drilling and epoxy installation of anchor bolts, as well as a rear conduit entry box for conductors to enter the station through surface wireways. The SCEClosed Surface Conduit Entry kit supports both Standalone and Paired installations. The SCEClosed Surface Conduit Entry kit also supports adding above-ground conduit to pair an already-installed Standalone station with another Express 250 for shared DC output.

Installing an Express 250 using the SCEClosed Surface Conduit Entry kit requires one ChargePoint Certified Installer and about 2.5 to 3 hours to complete (not including epoxy cure time). This time estimate includes the full charging station installation, including the applicable steps described in the Express 250 Installation Guide. If this is a Paired installation, allow an additional hour. This time estimate does not include the time needed to pull cables.

This document is a supplement to the normal charging station installation described in the Express 250 Installation Guide that ships with the station. Ensure all installation instructions from that guide are followed except where this guide deviates.

Shunt trip wiring is normally a feature of the , but is not required for operation. If shunt trip wiring will be used, run a wireway for the low voltage shunt trip wires that is separate from the AC conductor wireway.

Before You Begin

RISK OF SHOCK. Before performing this procedure, follow standard practice and local code to de-energize the circuit designated for each station at the service panel and lock out/tag out the disconnect before proceeding. Use a multimeter to test that power is off. Keep power off for this circuit until all cover panels are correctly reinstalled and the work scope is completed. FAILURE TO FOLLOW THESE INSTRUCTIONS CAN RESULT IN SERIOUS INJURY OR LOSS OF LIFE.

You must be a licensed electrician and complete online training to become a ChargePoint certified installer. If you do not complete training, you cannot access the ChargePoint network to complete installation. Find online training at: https://www.chargepoint.com/partners/training-certification. If the charging station is not installed by a ChargePoint certified installer, using a ChargePoint approved method, it is not covered under warranty and ChargePoint is not responsible for any malfunctions.
Use low torque settings when working with power tools during installation or servicing. Over-torquing can damage the equipment.
Do not install or service the charging station in inclement weather. If you work in snow, rain, or wind, you must use a weather-proof shelter that covers all boxes and components.
When you service a charging station, ChargePoint recommends taking a photo before removing each part, so you can refer to the photo when reassembling.
For assistance, go to chargepoint.com/support and find your region’s technical support number.

Required Tools and Materials

For an SCEClosed Surface Conduit Entry installation, the install must bring:

  • All tools and materials mentioned in the Express 250 Charging Station Installation Guide (if installing a new station). Online copies of both are available at https://www.chargepoint.com/partners/training-certification.

  • Surface wireways:

    • 2 in trade size for AC cable

    • 3 in trade size for DC cable (if Paired)

    • 3/4 in trade size for Ethernet Cat5 (if Paired)

    • 3/4 in trade size for shunt trip (if used)

  • Conduit elbows sized to each size wireway

  • Tools for cutting, assembling, and securing wireways

  • Sheet metal drill with drill bits for wireway sizes listed above, as needed (pilot holes provided)

  • Concrete drill, level feature recommended

  • 25 mm (1 in) and 6 mm (1/4 in) concrete bits

  • 25 mm (1 in) rebar bit if needed

  • 24 mm (15/16 in) open ended wrench

  • Flathead screwdriver

  • 750 ml of epoxy with bonding strength of 11.7 MPa minimum, compressive strength of 82.7 MPa minimum, and tensile strength of 49.3 MPa minimum, such as Hilti HIT-RE 500 V3 (normal cure time), Hilti HY-200 (fast curing), or similar

  • Cable puller or fish tape

  • Vacuum and/or brush

  • Marker

  • Isopropyl wipes

  • Paper towels

Read the Express 250 Installation Guide, Express 250 Site Design Guide, and site drawings to source and bring the correct AC conductors (required), shunt trip wiring (optional), DC conductors and lugs (Paired installations only), and Ethernet wiring (Paired installations only).

If the station will be paired, check the serial number on the rear surface just under the cable swing arms. For North America stations with SNs prior to 1929xxxx, or EU/UK SNs prior to 2003xxxx, the station also requires a Pairing Upgrade Kit. Contact ChargePoint for the kit and the installation guide for that configuration.

This product is compatible with the Express 250 Adapter. If the station has a slightly raised black or silver base below the cover panels, as shown on this image, break off the two front tabs on the SCEClosed Surface Conduit Entry box base along their scored edges.

SCEClosed Surface Conduit Entry installations require a larger rear clearance than a normal installation, to allow room for the SCEClosed Surface Conduit Entry and wireways. Wireways must enter the SCEClosed Surface Conduit Entry on its rear face. Conductor bend radius does not allow wireways to enter the SCEClosed Surface Conduit Entry from its sides.