Filter
Top Products
System Configuration
2–8 976-0043-01-02
Inverter Grounding
Requirement The inverter/charger should be connected to a grounded, permanent
wiring system with the AC and DC grounds commonly bonded to each
other and should be bonded to the grounding system at only one point in
the system. See “Bonding the Grounding System” on page 2–10 for
additional information.
Conductor size The size for the grounding conductor is usually based on the size of the
circuit breaker in the DC system. Table 2-1 provides battery DC
disconnect sizes and minimum wire sizes of copper ground wires for
grounding systems.
It is recommended that the size and gauge of grounding wire should be
more than the NEC/CEC minimum requirements when installing power
sources such as inverter/chargers or generators.
WARNING: Shock Hazard
Attach the ground lead BEFORE attaching any AC or DC power connections.
Table 2-1
Recommended Minimum Safety Ground Wire and
DC Disconnect Sizes per NEC
Battery DC
Disconnect Size
Minimum Size of Copper
Ground Wire
30 amp or 60 amp #10 AWG
100 amp #8 AWG
200 amp #6 AWG
300+ amp #2 AWG or greater
Note: Field experience has demonstrated that long distances or high
impedance grounds can cause equipment malfunction or damage.
WARNING: Explosion Hazard
Never use a gas pipe or gas line for grounding purposes. The inverter is a power
source and it is intended to be grounded at the service/main ground rod.