User Guide

8
Before You Start
Check the cellular strength at the installation site before beginning. The Boost Charger communicates using
a cellular network. FreeWire recommends that the signal is -110 dBm or better. Install repeaters if the signal
is too low or if the signal is intermittent.
You can measure signal strength using a signal meter device, or by initiating a strength test using a field test
mode on your smartphone. Instructions for this differ by smartphone, carrier, and operating system. As of
July 2020, a set of instructions can be found at: https://support.weboost.com/hc/en-us/articles/206521937-
Finding-Your-Phone-s-Signal-Strength-Reading-Field-Test-Mode-
Verify that the installation site has service wiring that meets the Boost Charger’s power requirements. Please
reference section 3.
Make sure that the grounding conductor is installed properly and complies with local codes.
Important: In geographic areas that experience frequent thunder storms, a supplemental surge protection
breaker must be installed at the service panel.
Consult NEC Article 625 Electric Vehicle Charging and Supply Equipment Systems regarding the
installation of a disconnect switch.
Grounding Requirements
The FreeWire Boost Charger must be grounded. Use a grounded, metal, permanent wiring system that runs
with circuit conductors and connects to the charger equipment ground on the Boost Charger. An
earth ground that complies to local codes must also be used for the Boost Charger.
Earth Ground
Check with local codes and regulations to determine if an earth ground is required at the physical location of
the concrete installation pad. If not, the earth ground from the electrical switch gear can be used to ground
the Boost Charger.
Surge Protection
Please refer to NEC Article 625 for installation requirements and review the installed jurisdiction for any
other electrical requirements or codes. Input over current protection needs to be provided by the installer. In
addition, it is recommended to install a UL1449 Type 1 Surge protection device (SPD) for use with the Boost
Charger, especially in areas that experience frequent thunderstorms. The specifications for the exact SPD
must be determined by a licensed electrical engineer or contractor and will depend on local laws, safety and
electrical regulations.
1 INTRODUCTION