What is the minimum conductor size that can be spliced inside an LB conduit body?

The minimum conductor size that can be spliced inside an LB conduit body is determined by the National Electrical Code (NEC) 2020 standards, which set forth specific guidelines regarding conductor sizes for splicing in different types of conduit bodies. An LB conduit body, which is typically used to provide access for pulling and splicing of wire in conduit runs, has to meet certain dimensional and accessibility requirements for safe and effective electrical work.

Regarding conductor size, the NEC generally specifies that for a conduit body, the internal volume must be sufficient to accommodate the conductors being installed. For a typical LB conduit body, conductor sizes must start at a minimum of 4 AWG when splicing, ensuring that there is adequate room for the splicing process and maintaining the integrity and safety of the electrical connection.

By understanding the NEC standards and the purpose of the conduit body, it is clear that 4 AWG is the appropriate and code-compliant choice for the minimum conductor size allowable for splicing in an LB conduit body. This ensures compliance with safety standards while allowing for proper electrical practices.