Ladder Rack Systems
Cable tray systems are an assembly of sections or units forming a rigid structural system used to securely fasten or support cables or raceways. They are used as an alternative to open wiring and electrical conduit systems in commercial and industrial applications. They are especially useful in situations where changes in wiring systems are expected, since new wires and cables can be installed by laying them in the tray, rather than pulling them through conduit. Several types of cable trays are used in different applications.
Ladder rack systems easily route and support cables along unused ceiling, wall and floor space, while keeping cables accessible for maintenance. Ladder trays have two side rails connected by cross bars or “rungs” which allow air circulation around the cables, dissipating heat. The rungs of the ladder cable tray provide anchors for attaching and tying down cables. Ladder cable trays can have covers installed to protect the cables from falling water, dust or debris. Ladder trays install as systems, with straight sections, curved sections and fittings to form a pathway. Straight ladder trays route and support cables in a straight line and allow cables to enter and exit at any point. They can connect with multiple straight sections for long, simple runs or fittings can be attached for modifications. Curved ladder trays turn horizontally or vertically to route cables around corners or machinery.
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4 Best Practices when Fabricating a Control Panel
Use a Larger Enclosure Whenever Possible
This allows room in the panel design to properly space all of the hardware and to install larger wire ducting. Panels that have ample space tend be me more organized, while panels that have everything crammed into a small space tend to be more difficult to work in and are often less organized.
Tap Holes Instead of Using Self-Tapping Screws
It is common for panel builders to use self-tapping screws to save time during the fabrication process. While it can save time, this type of fastener does not always provide the consistent, strong connection that may be needed for the mounted hardware. This is especially true when hardware may need to be removed at some point and then later reattached. Holes that have been tapped prior to hardware installation will offer a stronger, more consistent connection point that will last longer.
Ensure that Wire Ducting is Large Enough
It is very easy to undersize wire ducting when designing a panel. It is important to always plan for wire ducting to have extra room available once all wires have been run through it, including field wires.
When in Doubt, Label it
It is a very good practice to label wires in a control panel, but it is not always required to label the other types of hardware in the panel to meet code. It is important to understand that any operators that may access this panel at a later date may not understand what the hardware in the panel is intended for. To make the panel is as safe as possible, and to allow operators to function in the panel more efficiently, it is a good idea to label everything that may come into question.