Single cores outside enclosure

would be a C1 as the insulated cores are exposed and have no fault protection is this correct? 
 

For me, lack of shock protection under fault conductions (no such fault being present at time) would be a C2 for me. It would bare conductors to make it an immediately dangerous C1 in my book.

521.10.1 Non-sheathed cables for fixed wiring shall be enclosed in conduit, ducting or trunking. This requirement does not apply to a protective conductor complying with Section 543.
Non-sheathed cables are permitted if the cable trunking system provides at least the degree of protection IPXXD or IP4X, and if the cover can only be removed by means of a tool or a deliberate action.

Non-compliance, but not necessarily a C2. Say we had non-sheathed cables on a SELV circuit (e.g. traditional bell wire on a door bell circuit) - is that really even a codable situation?

   - Andy.

would be a C1 as the insulated cores are exposed and have no fault protection is this correct? 
 

For me, lack of shock protection under fault conductions (no such fault being present at time) would be a C2 for me. It would bare conductors to make it an immediately dangerous C1 in my book.

521.10.1 Non-sheathed cables for fixed wiring shall be enclosed in conduit, ducting or trunking. This requirement does not apply to a protective conductor complying with Section 543.
Non-sheathed cables are permitted if the cable trunking system provides at least the degree of protection IPXXD or IP4X, and if the cover can only be removed by means of a tool or a deliberate action.

Non-compliance, but not necessarily a C2. Say we had non-sheathed cables on a SELV circuit (e.g. traditional bell wire on a door bell circuit) - is that really even a codable situation?

   - Andy.