Is a junction box required where cables, suitable for direct burial, are spliced underground?

When dealing with cables that are suitable for direct burial, it is important to refer to the National Electrical Code (NEC) and local codes that apply to underground installations. Cables rated for direct burial are specifically designed to be buried without the need for additional protection or junction boxes.

Since these cables are constructed to withstand moisture and environmental conditions found underground, splicing them without a junction box is permissible as long as certain conditions are met. For instance, the splices must be properly insulated and protected from moisture, but the installation can remain safe and code-compliant without the use of a junction box.

In contrast, if the cables used were not suitable for direct burial, a junction box would provide essential protection and accessibility for any future electrical work or troubleshooting. However, with cables that have been engineered for underground use, the requirement for a junction box diminishes, allowing for a more streamlined installation process.