Installation Guide

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Step 7 Torque the bolts to 70 +/- 10 in-lbs.
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.
Check the Site Preparation Guide for details.
Optional External Safety Shutoff Switch
Note: Make sure to select an appropriately rated, code compliant remote shutoff switch. Your site location
and local codes may require special labeling, indicators, or other features. Requirements can vary by region,
so consult your local code enforcement officer for guidance.
The FreeWire Boost Charger can be wired up to an optional external safety shutoff switch. Installation of an
external switch does not disable the switch mounted on the front of the control panel. Either the front panel
button or the external switch may be used to initiate a safety shutdown. However, once a shutdown has been
initiated, you must use the front control panel to exit the shutdown. If a locking-type switch is installed, the
system cannot exit the safety shutdown until the switch has been released.
Use the STOP terminals to connect an external Safety Shutdown switch. Use a normally closed (NC) type
switch or button. The STOP terminals ship with a jumper installed. Remove this jumper before installing an
external switch. If not using an external switch, leave this jumper in place.
2 INSTALLATION OF THE BOOST CHARGER