What is the maximum branch breaker OR backfed main breaker that can be installed in the QO612L100F/S-RB, QO612L100DF/S, QO816L100F/S-RB, QO816L100DF/S load centers?

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Issue:
Product Design Features

Product Line:
QO Load Center

Resolution:
The wiring diagram will state to use a 70 A maximum branch breaker OR 10 0A maximum backfed main breaker. When a backfed main breaker is installed, the PK2MB retaining kit must also be used.
This information applies to all the below catalog numbers:
QO612L100F or S
QO612L100DF or DS
QO816L100F or S
QO816L100DF or DS
QO612L100DFCU or DSCU
QO816L100DFCU or DSCU
QO612L100RB or TRB
QO816L100RB
QO612L100RBCU
QO816L100RBCU
QO612L1400TF or TS
QO612L100DTF or DTS
QO816L100TF or TS
QO816L100DTF or DTS