in accordance with
225.10 and Part II of Article 396
338.24 Bending Radius. Bends in Types USE and SE cable shall be so made that the cable will not be damaged. The radius of the curve of the inner edge of any bend, during or after installation, shall not be less than five times the diameter of the cable.
EQ. Construction
338.100 Construction. Cabled, single-conductor, Type USE constructions recognized for underground use shall be permitted to have a bare copper conductor cabled with the assembly. Type USE single, parallel, or cabled conductor assemblies recognized for underground use shall be permitted to have a bare copper concentric conductor applied. These constructions shall not require an outer overall covering.
FPN: See 230.41, Exception, item (2), for directly buried, uninsulated service-entrance conductors.
Type SE or USE cable containing two or more conductors shall be permitted to have one conductor uninsulated.