Attached sketch shows bonding jumoer from service disconnect to the conduit. However one conduit is PVC and has the bonding. I thought bonsing jumper apply to metallic not non metallic parts. Is it stated anywhere in the code or do they have to wire EGC PVC conduit?
If I am seeing what I think I am seeing, you have a trough with service conductors in it, then it goes to two separate service disconnecting means, one with non metallic nipple one with a metallic nipple.
Both service disconnecting means enclosures are already bonded to the grounded conductor via bonding jumper/screw on the grounded conductor assembly.
Metal raceways and metallic enclosures can be considered bonded together by approved connecting fittings. The non metallic raceway requires no bonding - it is not conductive and any attempt at bonding it accomplishes nothing useful.
There is wording in 250.92(B) that basically says bonding of that metallic nipple in your case here can not depend solely on standard locknuts/bushings. Note that this only applies to service raceways, but if you had a typical N3R disconnect with a bolt on hub for your service disconnect - you have a bolt on hub and not a standard locknut/bushing for bonding - additional bonding methods are not necessary in that case.
