Grounding; System Neutral; Figure 3-8 Single-Point Ground; Ground Bar - Xantrex GT100 Series Planning And Installation Manual

Grounding

System Grounding
Chassis Ground

System Neutral

153379
This product is intended to be installed as part of a permanently grounded
electrical system per the National Electrical Code ANSI/NFPA 70, as well as all
state and local code requirements. A copper clad earth grounding electrode must
be installed within 1 m (3 ft.) of the GT100 Enclosure to ensure compliance with
FCC Part 15, Class A. This is to be the single point earth ground for the inverter
system. The single point connection to the earth grounding electrode for the
inverter system is to be made at the AC ground bus bar (TB2).

Figure 3-8 Single-point Ground; Ground Bar

The chassis ground is a copper bus bar in the AC Interface and has six bolts for
terminating the ground. The ground conductor size depends on the size of the
main circuit breaker. NEC Table 250.122 (Ninth Edition) requires that the ground
conductor be at least #3 AWG for a 400 A circuit breaker (GT100-208-NG and
GT100-208-PG) and at least #6 AWG for a 200 A circuit breaker (GT100-480-NG
and GT100-480-PG).
The equipment ground on the GT100 is marked with
The GT100 is designed to be installed as a four-wire system. As required by the
UL 1741 listing, a neutral conductor from the utility-interconnect must be
terminated at TB1-N within the AC Interface to ensure that the AC voltage
sensing circuit can perform an individual phase voltage (line-to-neutral)
measurement. The function of the neutral connection is to provide a point of
reference for measurement purposes that is essentially at ground potential. No
power will flow through the neutral conductor.
This manual for use by qualified installers only
Wiring - General
Ground Bar (TB2) to
be used for the Single
Point Ground.
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