C2670M
‐
C
Page
7
GROUNDING
A
properly
grounded
installation
is
critical
in
ensuring
the
fault
‐
free
operation
of
Endura
equipment.
All
conduit
used
should
be
securely
connected
rigid
metal.
An
earth
‐
ground
connection
should
be
made
by
one
of
the
following
means:
•
Grounding
rod
•
Building
steel
•
Conductive
cold
water
service
pipe
All
power
panels
should
be
grounded
to
the
electrical
service
entrance.
The
ground
connections
that
will
be
used
throughout
the
server
room
should
be
tested
to
ensure
a
low
resistance
path
to
ground.
NOTE:
Be
sure
to
verify
that
there
is
no
direct
current
(DC)
potential
between
grounds
of
different
circuits
in
each
rack.
Any
reading
above
1
V
measured
between
grounds
should
be
considered
a
problem
and
investigated.
Grounding
Guidelines
•
Main
building
electrical
ground:
The
main
electrical
service
entrance
equipment
should
have
an
earth
‐
ground
connection
as
required
by
applicable
codes.
Connections
such
as
grounding
rod,
building
steel,
or
a
conductive
‐
type
cold
water
service
pipe
provide
an
earth
‐
ground.
•
Electrical
conduit
ground:
All
electrical
conduits
should
be
made
of
rigid
metallic
conduit
that
is
securely
connected
together
or
bonded
to
panels
and
electrical
boxes
to
provide
a
continuous
grounding
system.
•
Power
panel
ground:
Each
power
panel
should
be
grounded
to
the
electrical
service
entrance
with
green
(green/yellow)
wire
ground
conductors.
The
green
(green/yellow)
wire
ground
conductors
should
be
sized
per
applicable
codes.
