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2. Junction box - Wikipedia

   en.wikipedia.org/wiki/Junction_box

   An electrical junction box (also known as a "jbox") is an enclosure housing electrical connections. [1] Junction boxes protect the electrical connections from the weather , as well as protecting people from accidental electric shocks .

3. Knob-and-tube wiring - Wikipedia

   en.wikipedia.org/wiki/Knob-and-tube_wiring

   By contrast, modern electrical codes now require that all residential wiring connections be made only inside protective enclosures, such as junction boxes, and that all connections must remain accessible for inspection, troubleshooting, repair, or modification.

4. Electrical enclosure - Wikipedia

   en.wikipedia.org/wiki/Electrical_enclosure

   Polycarbonate, glass-reinforced, and fiberglass boxes are used where stronger cabinets are required, and may additionally have a gasket to exclude dust and moisture. Metal cabinets may meet the conductivity requirements for electrical safety bonding and shielding of enclosed equipment from electromagnetic interference.

5. Utility box - Wikipedia

   en.wikipedia.org/wiki/Utility_box

   Utility box may refer to: A toolbox; Pattress, a box that houses electrical sockets, switches, or other fixtures, also known as an electrical box Junction box, a box that houses electrical connections; Electrical enclosure, a cabinet-sized box housing electrical equipment or connectors Pad-mounted transformer

6. Electrical conduit - Wikipedia

   en.wikipedia.org/wiki/Electrical_conduit

   Box connectors join conduit to a junction box or other electrical box. A typical box connector is inserted into a knockout in a junction box, with the threaded end then being secured with a ring (called a lock nut ) from within the box, as a bolt would be secured by a nut.

7. Distribution board - Wikipedia

   en.wikipedia.org/wiki/Distribution_board

   A distribution board (also known as panelboard, circuit breaker panel, breaker panel, electric panel, fuse box or DB box) is a component of an electricity supply system that divides an electrical power feed into subsidiary circuits while providing a protective fuse or circuit breaker for each circuit in a common enclosure.