Temporary extension cords should only be used briefly; when the cord's use is no longer temporary, permanent wiring should be installed. The National Electrical Code (NEC) does not permit the use of extension cords in place of permanent wire NEC 400.8(1)-2014 Version. However, this provision was added to address concerns about the safety of outdoor power equipment and is not intended to prohibit a person from using his or her best judgment regarding the length of time that a temporary cord will be required.
People who plan to keep an extension cord permanently attached to their circuit breaker or fuse box should look for a cord with at least as many wires in it as there are circuits being served by the extension cord. These wires can be colored blue, black, white or red to identify them as hot wires, which should never be crossed under any circumstances. If the original cable serving the circuit has been removed, someone should mark each conductor with tape to indicate which side is positive and which is negative.
It's important to follow proper installation procedures to ensure the safety of your family and your property. Temporary extension cords should be selected based on the load they will have to carry and the distance they will need to reach. In addition, cord terminations should be selected to match the load being carried by the extension cord.
The appropriate use of extension cables is crucial to your safety. An extension cable can quickly degrade with constant usage, posing a potentially severe electric shock or fire threat. Extension cords should not be used in place of permanent wiring. Running through walls, doorways, ceilings, or floors is not permitted. These paths may become hot due to leaky electrical boxes or other problems and present a danger for children and pets.
If you must use an extension cord for temporary work, it is recommended that a non-drop extension cord is used. This will prevent any voltage from reaching earth when the plug is removed from the wall outlet. Make sure that the extension cord is rated for at least twice the expected load capacity. Extension cords are available in various sizes and shapes for different applications. They usually come in three types: straight, coiled, and teardrop.
Straight extension cords have several lengths of wire inside a plastic sheath. The cord is attached to one end of the device being powered and then extended out to another location where it is plugged into a wall outlet. Straight extension cords are useful for extending power to places where it is not available such as outside areas of a building or remote locations along a wall or ceiling. It is important to note that these cords cannot be used as a substitute for permanent wiring. Damage may occur if the cord is pulled hard enough to break the internal wires.
Do not overload extension cables or allow them to run through standing water or snow.
If you are installing additional outlets using extension cords, make sure that they are the right type for your application. In most cases, you will need "extension" outlets- also called "supplemental" or "add-on" outlets- but if you want to use one of these cords as your main outlet, then it must be a duplex receptacle (also called a GFCI receptacle) so it can serve both lighting and power tools.
Extension cords have three parts: a plug, a cord, and a housing. The plug is what connects you to the wall outlet, while the cord extends from the plug to wherever you need extra room. They come in several lengths depending on your needs. Be sure to get one that matches the length of your project.
Extension cords are useful for providing electricity to things that normal walls don't reach- such as lights, heaters, air conditioners, and outdoor power supplies- as long as those devices are listed as acceptable uses on the label attached to the plug end. If an appliance isn't on the list, it can present a risk of electrocution.
This increases the likelihood of device failure and fire, especially when paper and other flammable items come into touch with the wires. Furthermore, OSHA laws permit the use of extension cables only as temporary wiring for up to 90 days. After this time, you must replace them with new, properly rated cable.
Here are some examples of when extension cords may be used as temporary wiring: When you need to cover a large area with electricity but don't want to run permanent wiring (such as when wiring a festival site or large trade show booth). If you plan to keep the setup for more than 90 days, it's recommended that you replace the extension cord with new cable.
Always follow all manufacturer instructions for any equipment being used as temporary wiring. They're not designed for long-term use and may require replacement parts. For example, if an appliance has been plugged in every night for several months, it's likely that its voltage regulator will fail soon after it is turned off each day.
If you're not sure whether or not your intended use will violate local code, it's best to ask someone who knows about electrical work before you begin. Otherwise, you could end up with dangerous electricity flowing through your body armor or tactical gear.