WS PRO LT weather station
19
FIGURE
A.2
‐
2
Grounding
system
“Y
can
be
installed
as
shown,
or
with
ground
enchancement
material
to
reduce
ground
resistance
even
further.
A.2.2
Design
“Y”
(Alternate)
An
alternate
design
“Y”
(shown
in
Figures
A.2
‐
3
and
A.2
‐
4)
uses
three
radials
in
a
120
degree
star
(“Y”)
arrangement.
Each
radial
consists
of
three,
5/8”
‐
diameter
x
8
‐
foot
long
copper
‐
clad
grounding
rods.
The
first
rod
in
each
radial
must
be
at
least
eight
feet
from
the
equipment.
The
rest
of
the
rods
must
be
at
least
16
feet
from
any
other
rod.
FIGURE
A.2
‐
3
Desing
“Y”(Altrenate)
uses
nine
copper
‐
clad
grounding
rods
installed
in
a
120
degree
star
configuration
