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Rewirehub, Califronia, San Francisco, CA (2026)

06/18/2023

Electrical cable
One or more electrical cables and their corresponding connectors may be formed into a cable assembly, which is not necessarily suitable for connecting two devices but can be a partial product (e.g. to be soldered onto a printed circuit board with a connector mounted to the housing). Cable assemblies can also take the form of a cable tree or cable harness, used to connect many terminals together.

09/09/2022

Electrical Cables

A cable is a group of two or more insulated conductor which is used for transmission of electrical power of signals. All cables have three types of wires, first wire for carrying current, and the second one to make a complete loop and the third wire is for grounding wire. The conductor is usually classified as per the gauge number, wire number and color. There are many designs based on the intended application. The conductor needs to be used in areas that are subjected to harsh mechanical stress and provide better protection than wires. An electrical cable also has different color and different types.

08/20/2022

Coaxial Cable

Coaxial cable is beginning to grow less common, thanks to the use of other forms of data wiring, such as HDMI, for television data transmission. Coaxial cable is a round, jacketed cable that features an inner conductor (usually copper) surrounded by a tubular insulating layer, surrounded by a tubular conducting shield made of braided wire. It can be identified by the threaded connectors that are used to make unions and device hookups.

Coaxial cable was once the standard for connecting televisions to antenna or cable service delivery and is still often used to connect satellite dishes or to bring subscription television service to an in-home distribution point. It typically has black or white insulation and is perfectly round in shape, making it easy to distinguish from NM electrical circuit cables. Coaxial cable can be found for affordable prices at most hardware and electronics stores.

08/06/2022

THHN/THWN Wire

THHN and THWN are codes for the two most common types of insulated wire used inside conduit. Unlike NM cable, in which two or more individually insulated conductors (copper or aluminum) are bundled inside a plastic sheathing, THHN and THWN wires are single conductors, each with its color-coded insulation. Instead of being protected by NM cable sheathing, these wires are protected by tubular metal or plastic conduit.

06/28/2022

ARMORED CABLE

When it comes to house electrical wiring, local ordinances are more strict than national codes. That is why you might find that in some areas NM cables are not permitted for use and in these locations, armored or AC cables are used instead.

AC wiring, also known as BX, goes back to the early 1900s and is designed with flexible metallic sheathing, which offers extra protection for the conductors inside. In commercial buildings or residential constructions with more than three stories, AC cannot be used.

06/10/2022

UF Cable

Underground Feeder (UF) is a type of nonmetallic cable designed for wet locations and direct burial in the ground. It is commonly used for supplying outdoor fixtures, such as lampposts. Like standard NM cable, UF contains insulated hot and neutral wires, plus a bare copper ground wire. But while sheathing on NM cable is a separate plastic wrap, UF cable sheathing is solid plastic that surrounds each wire. This type of electrical wire is also a bit more expensive than NM wire because of its durable insulation. UF cable is normally sold with gray outer sheathing.

UF cable is also used for major circuit wiring, and it carries a dangerous amount of voltage as long as the circuits are turned on.

06/05/2022

Aluminum Rewiring

Aluminum and copper are arguably two of the most popular materials used for electrical wiring construction. Both of these metals have conductive properties, so there is little to no resistance encountered by the electricity. Besides being excellent conductors of electricity, aluminum and copper share very few characteristics. Because of this, both forms of wirings have their weaknesses and strengths.

There have been several standards when it comes to electrical systems used in homes. Aluminum wiring used to be the go-to option for most people in the older days, and in some cases, still is. However, it is slowly but surely falling out of favor as people seek superior, safer, more efficient alternatives.

05/27/2022

NM-B Wire

NM cable was invented by the Romex company in 1922 and was first described and listed by the NEC (National Electrical Code) in 1926, but it did not come into prevalent use until the early 1960s when plastics replaced woven rayon as the material used for the outer sheathing. From that point forward, NM cable became the standard for running residential electrical wiring in hidden locations, within walls, and in floor and ceiling cavities. Today, NM cable is the standard for nearly all applications—other than in exposed locations such as against basement walls or along exposed exterior walls, where conduit is still the standard.

05/19/2022

Phone and Data Wire

Telephone and data wiring are low-voltage wires used for “landline” telephones and internet hookups. Telephone cable may contain four or eight wires. Category 5 (Cat 5) cable, the most common type of household data wiring, contains eight wires wrapped together in four pairs. It can be used for both phone and data transmission and offers greater capacity and quality than standard phone wire.

05/10/2022

Number of Wires Allowed in Conduit

When running individual electrical wires inside conduit, there is a limit to how many wires are allowed. The maximum allowable number is known as the "fill capacity," and this depends on several factors, including the size of the conduit, the gauge of the wires, and the conduit material. Metal (EMT), plastic (PVC), and flexible conduit all have different fill capacities, even when they're nominally the same size.

04/28/2022

Color coding is used both on the outer sheathing of bundled electrical cables and on the individual conduction wires within cables or inside conduit. Understanding this color coding can help you identify what the wiring is used for and helps maintain consistency within an electrical system.

04/24/2022

Often called “Romex” after one popular brand name, NM cable is a type of circuit wiring designed for interior use in dry locations. Most NM cables have a flattened tubular shape and run invisibly through the walls, ceiling, and floor cavities of your home.

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