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Report No.:
11008507 001
National Differences
Clause
Requirement − Test
Result – Remark
Verdict
US National Differences according to CB Bulletin No. 110A, June 2006
APPENDIX US National Differences according to CB Bulletin No. 110A, June 2006
(UL 60950-1)
(IEC Publication 60950-1:2001)
P
EXPLANATION FOR ABBREVIATIONS
P=Pass, F=Fail, N/A=Not applicable. Placed in the column to the right.
Special National Conditions
1.1.1
All equipment is to be designed to allow
installations in accordance with the National
Electrical Code (NEC), ANSI/NFPA 70,the
Canadian Electrical Code (CEC), Part I,
CAN/CSA C22.1, and when applicable, the
National Electrical Safety Code, IEEE C2. Also,
unless marked or otherwise identified, installation
is allowed per the Standard for the Protection of
Electronic Computer/Data-Processing Equipment,
ANSI/NFPA 75.
installations in accordance with the National
Electrical Code (NEC), ANSI/NFPA 70,the
Canadian Electrical Code (CEC), Part I,
CAN/CSA C22.1, and when applicable, the
National Electrical Safety Code, IEEE C2. Also,
unless marked or otherwise identified, installation
is allowed per the Standard for the Protection of
Electronic Computer/Data-Processing Equipment,
ANSI/NFPA 75.
Unit was evaluated according
to IEC 60950-1.
to IEC 60950-1.
The requirements have to be
checked during national
approval.
checked during national
approval.
N/A
1.4.14
For Pluggable Equipment Type A, the protection
in the installation is assumed to be 20A.
in the installation is assumed to be 20A.
No direct mains connection.
N/A
1.5.5
For lengths exceeding 3.05 m, external
interconnecting flexible cord and cable
assemblies are required to be a suitable cable
type (e.g. DP, CL2) specified in the NEC.
interconnecting flexible cord and cable
assemblies are required to be a suitable cable
type (e.g. DP, CL2) specified in the NEC.
For lengths 3.05 m or less, external
interconnecting flexible cord and cable
assemblies that are not types specified in the
NEC are required to have special construction
features and identification markings.
interconnecting flexible cord and cable
assemblies that are not types specified in the
NEC are required to have special construction
features and identification markings.
Interconnection canles are UL
recognized wiring which are
PVC insulated, rated V-1.
recognized wiring which are
PVC insulated, rated V-1.
P
1.7.1
Equipment for use on a.c. mains supply systems
with a neutral and more than one phase
conductor (e.g. 120/240 V, 3-wire) require a
special marking format for electrical ratings.
with a neutral and more than one phase
conductor (e.g. 120/240 V, 3-wire) require a
special marking format for electrical ratings.
A voltage rating that exceeds an attachment plug
cap rating is only permitted if it does not exceed
the extreme operating conditions in Table 2 of
CAN/CSA C22.2 No. 235, and if it is part of a
range that extends into the Table 2 “Normal
Operating Conditions.” Likewise, a voltage rating
shall not be lower than the specified “Normal
Operating Conditions,” unless it is part of a range
that extends into the “Normal Operating
Conditions.”
cap rating is only permitted if it does not exceed
the extreme operating conditions in Table 2 of
CAN/CSA C22.2 No. 235, and if it is part of a
range that extends into the Table 2 “Normal
Operating Conditions.” Likewise, a voltage rating
shall not be lower than the specified “Normal
Operating Conditions,” unless it is part of a range
that extends into the “Normal Operating
Conditions.”
No direct mains connection.
N/A
2.5
Where a fuse is used to provide Class 2, Limited
Power Source, or TNV current limiting, it shall not
be operator-accessible unless it is not
interchangeable.
Power Source, or TNV current limiting, it shall not
be operator-accessible unless it is not
interchangeable.
No such fuse provided.
N/A
2.7.1
Suitable NEC/CEC branch circuit protection rated
at the maximum circuit rating is required for all
at the maximum circuit rating is required for all
No direct mains connection.
N/A
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