b) The connection of the equipment to the grounding system.
a) The level of immunity from the various electromagnetic interference (surges, overcurrent, lighting impulses, ring waves, continuous waves, etc.) of the equipment connected to the signal cabling system. In order to prevent disturbances, the minimum separation between power cables and signal cables depends on many factors, such as following: Power cables and signal cables need to be cross at right angles. Power supply cables and signal cables can share the same cable conveyance systems (Trays, Channels, Etc.) Adequate separation need to be provided (by distance or shielding) between power cables and signal cables. The degree of influence will depend on the nature of the installation within its operating environment and the apparatus connected by the wiring. NOTE: When products covered by this standard are installed as part of a wiring installation, the installation may emit or may be influenced by electromagnetic signals. Products covered by this standard are, in normal use, passive in respect of electromagnetic influences, emission and immunity. Under certain conditions, the NEC allows “Free Air” rating of large, single conductor power In many cases, NEC permits greater conductor ampacities in Cable Ladder Systems than for other wiring methods. This can provide savings in the size or number of raceways required, thereby, reducing both material and labor costs. Cable Ladder Systems can provide significant advantages in cable filling over other wiring methods. The NEC also permits Cable Ladder for use as equipment ground conductor. #Expansion connector for cable tray code
National Electric Code (NEC) permits Cable Ladder in a wide variety of indoor and outdoor applications. Cable Ladder Systems are economical wire and cable management systems designed to support and protect electrical wires and cables. SAN Engineering Cable Ladder Tray Systems are designed to meet most requirements of cable and electrical wire installations and comply to local and international standards of fabrication and finishing. - NEC (ANSI / NFPA 70) National Electric Code.(Metal Cable Tray Installation Guide Lines) - NEMA VE 2 - 2006 National Electrical Manufacturers Association.- NEMA VE 1 - 2009 National Electrical Manufacturers Association.(Cable management – Cable tray systems and cable ladder systems) - IEC 61537 International Electrotechnical Commission.SAN Engineering Cable Ladder Tray Systems, fittings and accessories are manufactured in compliance with:
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