356.10(7) For encasement in concrete where listed for direct
burial and installed in compliance with 356.42.
356.42 Couplings and Connectors. Only fittings listed for
use with LFNC shall be used. Angle connectors shall not be
used for concealed raceway installations. Straight LFNC
fittings are permitted for direct burial or encasement in
concrete.