Do the Square D combination service entrance devices accept tandem breakers and how does one determine if they do?
Issue:
Product Design Features
Product Line:
Combination Service Entrance Devices
Resolution:
CSED = Combination Service Entrance Device
QOT = QO Tandem breaker
HOMT = Homeline Tandem breaker
1) Determine if the CSED is designed for branch breaker provisions and what type, QO or HOM(SEE FA241542 or see the bullets a) thru d) right below.)
a) CSED devices up to 225amp Maximum that CONTAIN branch breaker provisions and would use HOM(Homeline) branch breakers are as follows:
All the catalog numbers beginning with prefixes of RC, SC, SO and SU
b) CSED devices up to 225amp Maximum that CONTAIN branch breaker provisions and would use QO branch breakers are as follows:
All the catalog numbers beginning with prefix of QC,
c) CSED Devices rated 300 or 400amp Maximum that CONTAIN branch breaker provisions and that use HOM(Homeline) branch breakers are as follows:
All the catalog numbers beginning with prefixes of RU and SU
d) CSED devices rated 300 or 400amp Maximum that CONTAIN branch breaker provisions and that use QO branch breakers are as follows:
All the catalog numbers beginning with prefixes of CU and QU.
NOTE: SOME OF THE CSED CATALOG NUMBERS DO NOT HAVE PROVISIONS FOR BRANCH BREAKERS. THEREFORE, WOULD NOT USE Branch Breakers. SEE CURRENT DIGEST FOR THESE SPECIFIC CATALOG NUMBERS.
2) If the CSED is designed for branch breaker provisions, then to determine if it will accept tandem breakers on the load center interior, see the below digest table example.
Product Design Features
Product Line:
Combination Service Entrance Devices
Resolution:
CSED = Combination Service Entrance Device
QOT = QO Tandem breaker
HOMT = Homeline Tandem breaker
1) Determine if the CSED is designed for branch breaker provisions and what type, QO or HOM(SEE FA241542 or see the bullets a) thru d) right below.)
a) CSED devices up to 225amp Maximum that CONTAIN branch breaker provisions and would use HOM(Homeline) branch breakers are as follows:
All the catalog numbers beginning with prefixes of RC, SC, SO and SU
b) CSED devices up to 225amp Maximum that CONTAIN branch breaker provisions and would use QO branch breakers are as follows:
All the catalog numbers beginning with prefix of QC,
c) CSED Devices rated 300 or 400amp Maximum that CONTAIN branch breaker provisions and that use HOM(Homeline) branch breakers are as follows:
All the catalog numbers beginning with prefixes of RU and SU
d) CSED devices rated 300 or 400amp Maximum that CONTAIN branch breaker provisions and that use QO branch breakers are as follows:
All the catalog numbers beginning with prefixes of CU and QU.
NOTE: SOME OF THE CSED CATALOG NUMBERS DO NOT HAVE PROVISIONS FOR BRANCH BREAKERS. THEREFORE, WOULD NOT USE Branch Breakers. SEE CURRENT DIGEST FOR THESE SPECIFIC CATALOG NUMBERS.
2) If the CSED is designed for branch breaker provisions, then to determine if it will accept tandem breakers on the load center interior, see the below digest table example.
Released for: Schneider Electric Canada
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