What is electrical wires?
Electrical Wires are single electrical conductors, while cables are multiple conductors that have been encased in the sheathing.
Most wires are made of copper or aluminum, but they can also be made of steel. They may be bare or insulated, and they're typically 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 own 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？
When you're working with wires and cables, it's important to know how to identify them. 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.
For example, 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 are the letters and attributes you'll regularly see in residential wiring:
T: Thermoplastic insulation
H: Heat resistance
HH: High heat resistance (up to 194 degrees Fahrenheit)
W: Suitable for wet locations
N: Nylon coating, resistant to damage by oil or gas
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？
You've probably encountered a tangle of colored wires when trying to understand your home's electrical system, and you're not alone. It can be confusing! But we're here to help you understand what each color means, so you can check your wiring system with confidence.
First things first: if you're having trouble with your home's wiring system or it's older than you are, we recommend you utilize a certified electrician. You don't want to make matters worse by getting in over your head!
Red wires are usually used as secondary hot wires. They're also hot, so they should always be clearly marked to avoid the dangers of electrocution. Red wires are commonly used when installing ceiling fans where the light switch may be. If there's already a red wire in place, it may not be necessary to add another one—but do check with an electrician before proceeding, just in case!
Green insulated wires are often used for grounding purposes. Ground screws on electrical devices are often painted green, too—so never use a green wire for any other purpose than for grounding because this may pose a serious threat of electrocution for you or a professional
Choosing the right wire size is very important. It affects the safety of your electrical system, so you want to make sure you get it right.
In most cases, wire size is determined by two things: the current-carrying capacity of the wire (how much amperage it can handle) and what it will be used for.
When choosing a wire size, you'll need to know its AWG number, which is based on its diameter in thousandths of an inch (see table below). For example, if you're installing a new circuit for a home theater system, you'll want to choose a larger gauge wire that can handle higher amperages than if you were installing lights in your garage.
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!"