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Create a new junction box

In this guide, we'll show you how to make and install a junction box step by step. Box sizing matters: Always calculate box fill volume based on wires, grounds . A junction box provides a code-approved place to house wire connections, whether for outlets, switches, or splices. It helps prevent short circuits and keeps your wiring up to code. To install a junction box correctly, choose a box that matches the wiring method and environment, mount it securely, bring cables in. An electrical junction box is a protective enclosure designed to house and shield wire connections, splices, and terminations within a circuit.