Flickering lights, outlets that spark, or a burning smell indicate an issue with your electrical system. It’s important to contact a licensed commercial electrician.
Industrial facilities require specialized equipment and more complex power distribution systems. These differences in scale and complexity drive the additional certification requirements for industrial vs. commercial contracting. Contact Jacksonville NC Electric for professional help.
When it comes to commercial and industrial wiring, electricians often rely on Type MC wire to meet the needs of their projects. This versatile electrical cable is designed to handle branch circuits, feeders and service entrance wiring with confidence. Thanks to its durable metal sheathing, MC power cables also provide exceptional mechanical protection for critical environments. The following details will help you better understand the fundamentals of this robust and reliable cable solution, facilitating informed purchasing decisions for your next project.
In terms of construction, MC cable is comprised of insulated conductors encased in an interlocking steel tape armor. This sheath is designed to resist crushing and other damage, ensuring safe operation in demanding applications. In addition, a copper strip serves as an equipment grounding conductor, augmenting the safety of the cable in hazardous environments.
MC cable is a cost-effective alternative to conduit systems, eliminating the need for expensive and time-consuming fittings. It is ideally suited for applications in dry locations where space is limited, as it provides excellent flexibility and allows for easy wire inspection and replacement. It is a good choice for rewiring in existing structures, as well as for new installations in residential and commercial settings.
While MC cable is typically used in dry applications, it can also be utilized in wet or plenum spaces if the sheath has been properly protected with a waterproof jacket and/or corrosion-resistant coating. Additionally, certain varieties of MC cable are available for use in direct burial applications, further expanding the versatility and reliability of this versatile cable solution.
When choosing a Type MC wire supplier, you should ensure they offer a range of sizes and AWG counts to accommodate different installation requirements. They should also stock a variety of tools for cutting the metallic sheath, including heavy-duty cable cutters and hacksaws. It is important to use the correct methods for cutting MC cable, as incorrect technique can cause severe injuries. Using a steady, consistent pressure is key to achieving a clean cut without damaging the internal conductors. In addition, a vise should be used to prevent movement during the cutting process, promoting accuracy and ensuring a clean, straight cut.
Type EMT Wiring
When it comes to protecting and routing electrical wiring in commercial and industrial settings, EMT conduit (electrical metallic tubing) is the go-to solution. It safeguards conductors against physical damage, environmental factors, and electrical faults, while offering an easy installation process and cost-effectiveness. It’s also compliant with national and international electrical codes, making it a trusted choice for contractors, builders, and electricians.
A thin-walled, galvanized steel electrical conduit, EMT is a popular option for residential and commercial applications. Its durable design helps protect against corrosion, while its thinner walls make it easier to handle than heavier options like rigid metal conduit (RMC). While typically used indoors, it can also be installed outdoors and in damp locations if properly sealed and supported.
Another benefit of EMT is its ability to support a variety of different types and sizes of conductors. This flexibility simplifies the design and installation of wire systems, as existing conductors can be removed and new ones added without disturbing the rest of the system. In addition, EMT is a non-combustible conduit that does not emit toxic fumes when burned.
Couplings, connectors, and elbows help create a continuous conduit path for a given project. From a threaded galvanized coupling for EMT to a solvent-welded PVC coupling for ENT, these components are key for creating safe, secure connections. They can also be used to connect a conduit to junction boxes, panels, and enclosures.
When installing EMT, installers should follow local code requirements for support spacing and ensure that all joints are tight and secured with proper fittings. They should use only UL-listed or CSA-certified fittings, such as compression or set-screw connectors, to avoid compromising the integrity of the system. If using EMT in wet or damp environments, the system should be sealed with a weatherproof seal to prevent moisture from entering and damaging the insulation. In addition, all joints should be properly bonded to ensure electrical continuity. Finally, installers should use conduit straps to ensure that EMT remains attached to the structure, preventing it from pulling away from wall openings or other obstructions.
Type MC & Steel Messenger Wiring
There are several types of commercial wiring, each with its own unique set of benefits and drawbacks. While residential wiring focuses on home- and property-based electrical systems, commercial wiring is geared toward larger projects with more complex requirements. This includes electrical power for large office buildings, retail spaces, and industrial settings.
One of the most common commercial wiring options is type MC and steel messenger wire. This system is a cost-effective solution for a variety of applications, and it offers many benefits over competing systems.
MC wires feature aluminum interlocked armor, which provides protection against mechanical damage. This makes the cable durable and suitable for use in harsh environments. It can also withstand compression and bending without damaging the conductors inside. Additionally, the armor is resistant to chemicals and sunlight exposure.
In addition to its durability, MC wiring provides excellent flexibility and can be installed in a variety of ways. This includes directly buried underground, in conduits, and in cable tray systems. Type MC wires are also suitable for overhead installations. However, they must be separated from 600-volt power cables in order to avoid noise and cross talk. This can be accomplished by overlashing the messenger with a steel strand at regular intervals, using UV-rated zip ties to separate the two cables, or ordering tray cable with a steel messenger pre-molded into the jacket (figure 8 cable).
Another benefit of type MC wiring is its ease of installation and maintenance. The insulated conductors are placed in a trough or raceway that protects them from mechanical damage. The trough can be made from metal or PVC, and it can be mounted on walls, ceilings, and floors. This makes it easy to install in commercial buildings and other facilities.
When paired with steel messenger wires, type MC wiring is an ideal choice for aerial electrical distribution. The messenger wires provide support and power to contact wires in overhead electrical systems, such as those used by electric trains, trams, and trolleybuses. The system prevents sagging and provides best-in-class heat dissipation for uninterrupted power delivery. It also enables users to add or remove conductors without interrupting service.
Type EMT & Steel Messenger Wiring
While residential types of wiring are primarily used for homes and apartments, commercial wiring is much more complex and focuses on larger projects with higher power outputs. One of the more popular commercial electrical wiring options is type EMT or electrical metallic tubing. It is easy to work with and has the benefits of being more cost-efficient than other options.
You’ll see this type of wiring running throughout a variety of different settings, from schools and apartments to restaurants and offices. It has an aluminum interlocking armor that protects the wires inside, making it perfect for use in areas where there is a lot of movement and activity. This type of wiring can also be used outdoors in areas where it might be exposed to the elements, such as on bridges and other types of infrastructure.
Another common type of commercial electrical wiring is type MI or material-insulated, metal sheathed. This is similar to type MC, as it has an aluminum sheath that helps to keep the conductors protected from outside elements. It is commonly found in areas that need to reduce electromagnetic fields, such as computer rooms and other sensitive equipment, as it can help to protect against interference.
For the most part, commercial electrical wiring is run through conduit and other raceways. It is important to note that the ampacity of a copper cable is calculated by the medium in which it is installed, so if a conductor is installed in an uninsulated, non-metallic raceway, its ampacity will be reduced accordingly.
It is also important to note that a copper cable must be supported and secured with staples, straps, hangers or other fittings designed and installed to not damage the conductors. It must also be secured at intervals not exceeding 1.4 m (4 1/2 ft) and within 300 mm (12 in.) of every outlet box, junction box, cabinet or other fitting. In addition, if a bare copper conductor is used, it must be supported with an individual steel messenger wire that is attached to a separate grounding system.
For a quicker and more efficient way to pre-wire your commercial space for power underneath raised access floors, consider using Snake Tray’s unique bus bar technology. It is the fastest and easiest way to install a commercial electrical system in your building. It eliminates the need to run multiple lengths of EMT, as well as multiple pieces of wire and significantly reduces installation costs by eliminating the need for bulky copper wire.