PET-AR400 User Manual
V1.0.0
P.20
Step 3
：
Mount the ground screw and wiring the ground cable
Tips & Warnings
A good ground reference (earth ground) is essential for proper operation of the
PET-AR400. One side of all control circuits, power circuits and the ground lead
must be properly connected to earth ground by either installing a ground rod in
close proximity to the enclosure or by connecting to the incoming power system
ground. There must be a single-point ground (i.e. copper bus bar) for all devices
in the enclosure that require an earth ground.
