Alexei Volkov
When it comes to wiring, ensuring the safety and longevity of electrical connections is paramount. Wiremold is a type of conduit that provides protection for wiring, with both plastic and metal options available. The compatibility of Wiremold metal and plastic components is a topic of discussion among electricians, with some expressing concerns about mixing materials and voltage requirements. In this discussion, we will delve into the considerations and best practices for utilizing Wiremold in various applications, addressing the question of whether metal and plastic components can be used together effectively and safely.
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What You'll Learn
Plastic wiremolds for light switches
Legrand offers a range of Wiremold products for wire and cable management, including plastic enclosures. These plastic Wiremolds are non-metallic raceways designed to extend power to light switches and other electrical fixtures without the mess of exposed cords. The Wiremold NMW1, for example, is a 5-foot plastic channel that carries wire from a starter box to downstream outlet boxes, switches, and fixtures. It is available in white and ivory and blends well with the wall, providing a clean look.
The installation process for these plastic Wiremolds is generally straightforward and safe for those with basic knowledge of house-voltage wiring. The plastic material is convenient for drilling holes and mounting. However, some users have noted that removing the cover to fit a switch can be challenging due to the latch design.
Plastic Wiremolds are suitable for various applications, including home offices, entertainment setups, and even motorhomes. They are a good option for protecting wiring in environments where it needs to be shielded from moisture and potential physical damage.
While plastic Wiremolds offer convenience and a neat appearance, they may not be suitable for all situations. In some cases, such as wiring horse trailers, users have expressed a preference for metal conduits due to their perceived greater durability and weather resistance.
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Metal wiremolds for high voltage
Wiremolds are used to protect wiring from anything that moves, kicks, drags, gets wet, or is hung from it. While some sources suggest that wiremolds are only for dry locations, others suggest that they can be used outdoors, as long as they are under a roof and not exposed to the elements.
When it comes to high-voltage applications, metal wiremolds are often considered a better option than plastic ones. Metal wiremolds are typically made of steel and are more durable and sturdy than their plastic counterparts. They are also better at dissipating heat, which is crucial when dealing with high voltage.
One example of a metal wiremold product is the Wiremold 500 and 700 series surface metal raceway. This product is designed for branch circuit wiring and low-voltage wiring, such as data networks, voice, and video. It is important to note that while metal wiremolds are generally suitable for high-voltage applications, specific regulations and standards, such as Article 384 for metallic surface raceways, should be followed to ensure safety.
When installing metal wiremolds, careful planning is essential. Reconnecting wires and adding new ones can be challenging due to the tight space and the tendency for covers to deform with repeated use. It is also important to use the correct fittings and connectors, such as wire mold wire nuts, to ensure a secure and safe installation.
Overall, metal wiremolds are a reliable and safe option for high-voltage applications when used correctly and in accordance with relevant guidelines. They provide protection, durability, and effective heat dissipation, making them a popular choice for a variety of indoor and outdoor high-voltage installations.
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Using wiremolds in horse trailers
When using wiremolds in horse trailers, it is important to consider the specific requirements and challenges of this application. Horse trailers require a robust wiring system that can withstand the rigours of transportation and protect the wiring from potential damage caused by movement, moisture, and other factors.
While wiremolds can be used in horse trailers, some sources suggest that they may not be the most suitable option. One user on a forum mentions that the wiring in horse trailers needs to be over-protected from anything that moves, kicks, drags, or gets wet. They express the opinion that wiremolds, whether plastic or metal, are not ideal for this purpose. Instead, they recommend using chases or conduits on the outside of the enclosure, away from brake lines or rotating parts.
However, other users on the same forum have discussed their experiences using wiremolds in horse trailers. One person mentions rebuilding a horse trailer and wiring it similarly to a house, using wiremolds within the walls, which are lined with painted metal panels. They also mention using Romex inside the wiremolds, which has raised questions about permissibility. Another user provides insights into their wiring setup, including feeding a 30A line into two 20A breakers for the rooftop A/C and receptacles.
When using wiremolds or other wiring methods in horse trailers, it is essential to follow proper electrical safety practices and consult with qualified professionals. The wiring process involves separating and connecting different wires to specific components, such as the trailer brakes, battery, and lights. It is crucial to use the appropriate connectors, terminals, and screws to ensure secure and safe connections. Additionally, taping all connections with electrical tape and securing wires to the trailer frame provide further protection.
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Romex inside wiremolds
Wiremold is a wire and cable management product that offers power solutions for public spaces. It can be used to provide convenient access to electric vehicle charging, for example.
When it comes to Romex inside wiremolds, there are a few things to consider. Firstly, it is important to note that Romex is a type of cable, typically used for residential wiring, while wiremold is a type of conduit or enclosure that can be made of metal or plastic and is used to protect cables.
Some sources suggest that using Romex inside wiremold may not be permissible or advisable, especially in commercial settings. This is because a cable in a raceway reduces the rated capacity of the site. Additionally, in unfinished basements and crawl spaces, there may be specific code requirements that need to be followed.
However, other sources indicate that it is possible to run Romex inside wiremold, especially if it is used as a protective sleeve. This can be done by removing the bottom of the wiremold and placing it over the Romex cable. This method can be useful when wiring through walls or ceilings, as it avoids the need to rip up or break open walls to run the cable.
It is important to carefully plan the runs and consider the available space, as it can be difficult to rework or pull more wire through the wiremold after installation. Additionally, when using Romex inside wiremold, it may be necessary to strip the outer sheathing and use a junction box to ground the box.
Overall, while there may be some considerations and alternative approaches, it is possible to use Romex inside wiremolds in certain situations, especially when used as a protective sleeve.
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Wiremold boxes and fittings
Legrand's Wiremold product line offers a wide range of power solutions for indoor and outdoor applications. The Wiremold boxes and fittings are part of this range of wire and cable management products.
The 500 and 700 Series One-Piece Steel Raceway, for example, includes box fittings that accommodate other standard single-gang switches. The Elbow Box Connector Fitting, for instance, connects raceways at right angles to conduit boxes or panel boxes with 1/2" trade size conduit KOs. The EMT Connector Fitting, on the other hand, connects 1/2" trade size EMT to 5700 Series device boxes.
Wiremold products are also used in applications like horse trailers. In one instance, the walls of a horse trailer were wired with Wiremold, and Romex was run inside it. The user questioned whether this was permissible. In another case, a user sought advice on how to bring in a 30A connection and feed it into 20A breakers for the rooftop AC and receptacles.
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Frequently asked questions
No, it is not recommended to use Wiremold for wiring horse trailers. The wiring in horse trailers needs to be protected from anything that moves, kicks, drags, gets wet, or is something that some other thing can be hung on it.
No, it is not recommended to use plastic Wiremold for light switches. Non-metallic Wiremold is rated for up to 600 volts, but some electricians do not recommend using it for more than 480 volts.
Yes, you can use individual conductors inside the Wiremold. It is even preferred by some electricians as it allows for a split channel, with one side for data and one for power.
