In the electrical wiring of buildings a cable tray system is used to support insulated electrical cables used for power distribution control and communication.
Tray rated cable definition.
Tray cable types tc itc and pltc are permitted in cable trays by the nec.
Tray cable is the all around cable.
Power control tray cable.
It can be used in wet or dry locations indoors or outside and shielded or left.
In all instances cables utilized within a cable tray system should be ul listed and marked as cable tray rated.
Tray cables are available in a variety of insulation and jacketing combinations and designed to meet the demands of everything from light to heavy.
Cable tray allows for the clean organization and routing of cable and offers advantages over conduit because cables are easier to access for installation repair removal and future development.
Cable tray definition cable tray is classified by the nec nfpa 70 the national electrical code as a support system and not as a raceway.
However if more than 1 8 meters 6 feet of cable is brought out of the tray for a connection to a motor or other electrical device cables without an er rating must be either armored type mc or be installed in conduit or some other type of raceway.
Tray cables tray cables are used in control and power applications in chemical plants steel mills industrial plants utility substations and generating stations as well as commercial buildings.
Rated for ul and csa belden power and control cables provide the backbone for industrial environments delivering signal and power transmission along cable trays and enclosures from controllers to devices field tested and proven belden power and control cables are specially designed to withstand temperature variations and other harsh conditions.
See multi conductor power and control cables rated for 600 volts.
In many cases there is more than one type of cable for a particular application for instance both cables rated as tray cable tc and cables rated as metal clad mc can be used for 600 volt motor power cables.
Cable trays are used as an alternative to open wiring or electrical conduit systems and are commonly used for cable management in commercial and industrial construction.
They are especially useful in situations where changes to a.
Uses include cable trays raceways or conduit with exposed run and outdoor ratings.
Tray cable comes in multiconductor and multipair styles that can be used for control instrumentation signal power and lighting.
Generally speaking raceway completely encloses the cable inside of it.
