This is the most common type of home electrical wire that is installed for general purpose electrical circuits, also known as Type NM or Non-Metallic sheathed cable made up of at least one pair of insulated wire conductors and one bare wire used for the ground conductor. This kind of wire have 3 sizes, PDX 14/2, PDX 12/2, and PDX 10/2. The ground conductor is bonded throughout the home to maintain a contiguous grounded system which originates back at the Main Service Panel. Most electrician know this kind of wire as Loomex, Romex, and PDX.
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Named after Phelp Dodge the maker of (PDX) brand Roomex is another brand of Non-Metallic Sheated
This is the most common type of home electrical wire that is installed for general purpose electrical circuits, also known as Type NM or Non-Metallic sheathed cable made up of at least one pair of insulated wire conductors and one bare wire used for the ground conductor. The ground conductor is bonded throughout the home to maintain a contiguous grounded system which originates back at the Main Service Panel.
The white wire is typically neutral, the black wire is usually hot or live, the red wire may be a secondary live wire or used for a separate function, and the bare wire is typically the ground wire for safety purposes in an electrical circuit.
In electrical wiring, the live or "hot" wire is typically brown or red, the neutral wire is typically blue or black, and the ground wire is yellow or green. So, in this case, the brown wire is likely the hot wire, the blue wire is the neutral wire, and the yellow green wire is the ground wire.
For a typical 12-2 wire, the black wire is the "hot" wire that connects to the breaker, the white wire is the neutral wire that connects to the neutral bus bar, and the bare copper wire is the ground wire that connects to the ground bus bar in the circuit panel.