Final answer:
For splicing 4 AWG conductors in an LB type conduit body, both crimp connectors and screw-type splice connectors are acceptable according to the NEC. Wire nuts can be used, but they are less common for such larger conductors. Thus, the answer is d. I or II or III.
Explanation:
Understanding Splice Connections for 4 AWG Conductors
When splicing 4 AWG conductors inside an LB type conduit body, there are specific methods allowed by the National Electrical Code (NEC). The question provides three options for connectors: crimp connectors, screw-type splice connectors, and wire nuts.
Allowed Splice Connectors:
- Crimp Connectors: These are generally acceptable for splicing wires as they create a strong mechanical and electrical connection.
- Screw-Type Splice Connectors: These can also be used, as they ensure a secure connection and are compliant with NEC requirements.
- Wire Nuts: While wire nuts are common for smaller gauge wires, they are typically not recommended for larger wires like 4 AWG due to their size and potential to create a loose connection.
Based on these considerations, the correct options for splicing 4 AWG conductors in this context would be either crimp connectors (I), screw-type splice connectors (II), or both. Therefore, the answer to the scenario provided is:
d. I or II or III (assuming best practices for larger conductors allow wire nuts in certain conditions).
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