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3.0 Installation
Pre-Installation Planning (continued)
System Grounding
NOTE: Be sure to consult your local
and national electrical codes
to confirm grounding and
bonding requirements for
your specific system.
NOTE: Through field experience, it
is found that long distances
or high impedance grounds
were the cause of a majority
of customer dissatisfaction
issues or equipment
damage during lightning
storms.
It is recommended that the
size and guage of
grounding wire should be
more than the NEC
minimum requirements
when installing power
sources such as inverter/
chargers or generators.
Equipment or Chassis Grounding
24
The inverter/charger should be connected to a grounded, permanent
wiring system. For most installations, the negative battery conductor
should be bonded to the grounding system at one point in the system.
The grounding requirements vary by country and application. All
installations must comply with national and local codes and ordinances.
Consult local codes and the NEC for specific requirements.
Table 3-1 provides minimum required ground wire sizes per NEC Code.
B
t a
e t
y r
D
C
D
s i
c
o
n
n
e
t c
S
3
0
a
m
p
o
r
6
0
a
m
p
1
0
0
a
m
p
2
0
0
a
m
p
3
0
0
+
a
m
p
Safety Ground Wire Sizes
This grounding connects the metallic chassis of the various enclosures together
to have them at the same voltage potential. This reduces the possibility for
electric shock. It also provides a path for fault currents to flow through to blow
fuses or trip circuit breakers. The size of the connecting conductors should be
coordinated with the size of the over-current devices involved. Under some
circumstances, the conduit and enclosures themselves will provide the current
paths.
z i
e
M
i
i n
m
i
m
S
z i
e
f o
C
#
1
0
#
8
A
#
6
A
#
2
A
W
G
Table 3-1
©2002 Xantrex Technology Inc. All Rights Reserved.
o
p
p
r e
G
o r
u
n
d
W
i
e r
A
W
G
W
G
W
G
o
r
g
e r
t a
r e
P/N 975-0026-01-01 Rev A 06/2002
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