Lenovo ThinkCentre A52 (English) Quick reference guide - Page 92

Power, notice

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Before installing this equipment, users should ensure that it is permissible to be connected to the facilities of the local telecommunications company. The equipment must also be installed using an acceptable method of connection. The customer should be aware that compliance with the above conditions may not prevent degradation of service in some situations. Repairs to certified equipment should be coordinated by a representative designated by the supplier. Any repairs or alterations made by the user to this equipment, or equipment malfunctions, may give the telecommunications company cause to request the user to disconnect the equipment. Users should ensure for their own protection that the electrical ground connections of the power utility, telephone lines, and internal metallic water pipe system, if present, are connected together. This precaution may be particularly important in rural areas. Caution: Users should not attempt to make such connections themselves, but should contact the appropriate electric inspection authority, or electrician, as appropriate. NOTICE: The Ringer Equivalence Number (REN) assigned to each terminal device provides an indication of the maximum number of terminals allowed to be connected to a telephone interface. The termination on an interface may consist of any combination of devices subject only to the requirement that the sum of the Ringer Equivalence Numbers of all the devices does not exceed 5. Power cord notice For your safety, Lenovo provides a power cord with a grounded attachment plug to use with this product. To avoid electrical shock, always use the power cord and plug with a properly grounded outlet. Power cords provided by Lenovo in the United States and Canada are listed by Underwriter's Laboratories (UL) and certified by the Canadian Standards Association (CSA). For units intended to be operated at 115 volts: Use a UL-listed and CSA-certified cord set consisting of a minimum 18 AWG, Type SVT or SJT, three-conductor cord, a maximum of 15 feet in length and a parallel blade, grounding-type attachment plug rated 15 amperes, 125 volts. For units intended to be operated at 230 volts (U.S. use): Use a UL-listed and CSA-certified cord set consisting of a minimum 18 AWG, Type SVT or SJT, three-conductor cord, a maximum of 15 feet in length and a tandem blade, grounding-type attachment plug rated 15 amperes, 250 volts. 74 Quick Reference

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Before
installing
this
equipment,
users
should
ensure
that
it
is
permissible
to
be
connected
to
the
facilities
of
the
local
telecommunications
company.
The
equipment
must
also
be
installed
using
an
acceptable
method
of
connection.
The
customer
should
be
aware
that
compliance
with
the
above
conditions
may
not
prevent
degradation
of
service
in
some
situations.
Repairs
to
certified
equipment
should
be
coordinated
by
a
representative
designated
by
the
supplier.
Any
repairs
or
alterations
made
by
the
user
to
this
equipment,
or
equipment
malfunctions,
may
give
the
telecommunications
company
cause
to
request
the
user
to
disconnect
the
equipment.
Users
should
ensure
for
their
own
protection
that
the
electrical
ground
connections
of
the
power
utility,
telephone
lines,
and
internal
metallic
water
pipe
system,
if
present,
are
connected
together.
This
precaution
may
be
particularly
important
in
rural
areas.
Caution:
Users
should
not
attempt
to
make
such
connections
themselves,
but
should
contact
the
appropriate
electric
inspection
authority,
or
electrician,
as
appropriate.
NOTICE:
The
Ringer
Equivalence
Number
(REN)
assigned
to
each
terminal
device
provides
an
indication
of
the
maximum
number
of
terminals
allowed
to
be
connected
to
a
telephone
interface.
The
termination
on
an
interface
may
consist
of
any
combination
of
devices
subject
only
to
the
requirement
that
the
sum
of
the
Ringer
Equivalence
Numbers
of
all
the
devices
does
not
exceed
5.
Power
cord
notice
For
your
safety,
Lenovo
provides
a
power
cord
with
a
grounded
attachment
plug
to
use
with
this
product.
To
avoid
electrical
shock,
always
use
the
power
cord
and
plug
with
a
properly
grounded
outlet.
Power
cords
provided
by
Lenovo
in
the
United
States
and
Canada
are
listed
by
Underwriter’s
Laboratories
(UL)
and
certified
by
the
Canadian
Standards
Association
(CSA).
For
units
intended
to
be
operated
at
115
volts:
Use
a
UL-listed
and
CSA-certified
cord
set
consisting
of
a
minimum
18
AWG,
Type
SVT
or
SJT,
three-conductor
cord,
a
maximum
of
15
feet
in
length
and
a
parallel
blade,
grounding-type
attachment
plug
rated
15
amperes,
125
volts.
For
units
intended
to
be
operated
at
230
volts
(U.S.
use):
Use
a
UL-listed
and
CSA-certified
cord
set
consisting
of
a
minimum
18
AWG,
Type
SVT
or
SJT,
three-conductor
cord,
a
maximum
of
15
feet
in
length
and
a
tandem
blade,
grounding-type
attachment
plug
rated
15
amperes,
250
volts.
74
Quick
Reference