Question

what is the primary purpose of electrical boxes?​

Answer 1

Answer:

See Enclosure (electrical). Junction boxes form an integral part of a circuit protection system where circuit integrity has to be provided, as for emergency lighting or emergency power lines, or the wiring between a nuclear reactor and a control room.

Answer 2

Junction boxes are an essential part of the electrical wiring systems for homes and buildings alike. These metal or plastic boxes house and safely protect a structure's electrical connections.