What is an electric wire?
Electrical wires are the conductors that carry electricity from the source to your home. They're either bare or insulated, and they're usually covered in a thin layer of PVC. If they have a PVC sheath, then the PVC is colored to indicate whether the wire is a neutral, ground, or hot wire in your electrical installation. We discuss wire colors in their own section in this guide.
Cables contain at least a neutral wire, ground wire, and hot wire that are twisted or bonded together. Depending on its purpose, the cable may contain more wires. The wires in a cable are insulated in their color-coded layer of PVC. The group of wires is then encased in an outer sheath to make up the single cable.
How to Identify Wires and Cables？
There are a few different ways to identify your wires and cables. The most common way is to look for the letters printed on the jacket of the wire or cable.
Each jacket will have information printed on it to help you choose the correct product for your job. A letter code provides the attributes of the wire, along with material, gauge, and voltage rating.
A common system used by the National Electrical Code is THHN, XHHW, THW, etc…
THHN is the most commonly used type of wire in conduit and cable trays for services, feeders, and branch circuits in commercial or industrial applications. Below is some common lettering for residential wiring:
T: Thermoplastic insulation
H: Heat resistance
HH: High heat resistance (up to 194 degrees Fahrenheit)
W: Suitable for wet locations
Electrical Wire Color Coding
The color coding of electrical wires is an industry-standard that helps electricians and DIYers to identify the purpose of a wire. It's important to remember that not all wires are hot, even if they're colored black or red. All wires can carry current, but some may have been connected differently from the industry standard.
Black: Hotwire for switches or outlets
Red: Hotwire for switch legs and connecting to hardwired smoke detectors
Blue and Yellow: Hot wires pulled through conduit; blue is often used for three- or four-way switch applications, and yellow is for switch legs to control fans, lights, etc.
White: Neutral (can be hot if marked with black or red to indicate it's no longer a neutral)
Green and Bare Copper: Only for grounding purposes
what is the red wire in electrical？
When trying to understand your home’s electrical system, you may encounter a tangle of colored wires. Here’s what those colors mean.
Red WiresRed wires are usually used as secondary hot wires. Red wires are also hot and should be clearly marked to avoid the dangers of electrocution. Red wires are commonly used when installing ceiling fans, where the light switch may be.
Green WiresGreen insulated wires are often used for grounding. Ground screws on electrical devices are often painted green, too. Never use a green wire for any purpose other than for grounding, as this may pose a serious threat of electrocution for you or a professional working on your home’s electrical system.
If you're installing a new electrical circuit or upgrading an existing one, it's important to choose the right wire size. The proper wire size is critical to any electrical wire installation. Wire sizing indicates the diameter of the metal conductor of the wire and is based on the American Wire Gauge (AWG) system. The gauge of a wire relates to the wire's current-carrying capacity, or how much amperage the wire can safely handle. When choosing the right wire, you must consider the gauge of the wire, the wire capacity, and what the wire will be used for.
Wires that are not properly matched to the amperage of the circuits they serve can create a notable risk of short circuits and fire.
where to buy electrical wire？
Sell your electrical wire and copper wire, and get top dollar for your unneeded equipment.
Whether you want to make room in your warehouse or get back on track with your budgeting, selling your electrical surplus can be a big help. With International Recovery, we’re ready to buy electrical wire and copper wire from you. We offer top dollar for your surplus so that you can turn it into cash that you can then apply to other areas of your business.
The decision to sell electrical wire and copper wire surplus can be a big help if you’re looking for some extra cash, and International Recovery is always ready to pay cash on the spot before we even leave your site. By selling the old, broken, or out-of-date electrical wire and copper Wire you no longer need, you’ll have funds to use for new projects or internal initiatives at your company.
Are you ready to sell your electrical wire and copper wire surplus? If you want to make top dollar for your new, used, obsolete electrical wire and copper wire surplus, call us at (0086) 0755 8527 1922 for an easy and reliable solution!