Different color wires serve different purposes, like:.

Copper

The two categories of single-conductor wires are solid and stranded (also called braided). Solid wire is rigid and conducts electricity better. Stranded wire consists of smaller wires braided together.

• Black : Hot wire, for switches or outlets.
• Red : Hot wire, for switch legs. Also for connecting wire between 2 hardwired smoke detectors.
• Blue and Yellow : Hot wires, pulled in conduit.
• White : Always neutral.
• Green and Bare Copper : Only for grounding.

Electrical services means transmitting or distributing electricity, electric lights, current or power over lines, wires or cables.

While a fuse is made of a piece of metal that melts when overheated, circuit breakers on the other hand, have internal switch mechanisms that can be tripped by an unsafe surge of electricity. …

Breaker boxes do not have fuses, because circuits are used instead. Only fuse boxes have fuses. If you’re still using fuses, experts recommended you upgrade as soon as possible.

Fuses are housed in a fuse box—the precursor to the main service panel found with modern circuit breaker systems. The fuse box is usually located away from main living areas, such as the garage, laundry room, or basement.