Cable Tray Loading Depth

06 152mm 09 229mm 12 305mm 18.

Cable tray loading depth.

To properly evaluate a cable tray wiring system vs. Cable load foot 49 cables 20 lb 1000 ft. Cable tray having a usable inside depth of 150 mm 6 in if the depth is more than 6 nec recommends the filling percent will be calculated as only 6 in it is the depth. This is the total weight of cables in the tray.

Cable tray wiring systems are the preferred wiring system when they are evaluated against equivalent conduit wiring systems in terms of safety dependability space and cost. Tray size of 0 1852 o d. To convert 1 5 safety factor to 2 0 multiply the published load by 0 75. For purposes of selecting a suitable tray this weight should be rounded off to the next higher.

Cables of 0 21. 5 side rails with 4 loading depth. This table for cable tray sizes is provided by hoffman enclosures inc. Cable trays will support without collapse a 200 lb.

I don t know how a modern program could calculate the ampacity. Cope cable tray systems. Published load safety factor is 1 5. Wire basket cable tray fill calculator cable tray sizing calculator.

Cable tray must be supported on spans shorter. Below is the data for quick tray wire mesh cable tray fill table at 50 fills. Cable trays will support without collapse a 200 lb. 90 7 kg concentrated load over and above published loads.

Cable tray must be supported on spans shorter than. 10 foot length part numbers type fe rung spacing section width. Today the cope brand is part of atkore international and is the premier producer of all major categories of cable tray systems. The nema classes are based on cable loads of 50 75 and 100 per lineal foot.

Cable load working load the cable load or the working load is the total weight of the cables to be placed in the tray. Which is subject to change at any time. To obtain mid span deflection multiply a load by the deflection multiplier. A conduit wiring system an engineer must be knowledgeable of both their installation and the system features.

Cope glas cable tray system. The cable tray sizing equals the width times the loading depth. Inside vertical riser guides and transitions cable tray up or level with cables on the inside. To obtain mid span deflection multiply a load by the deflection multiplier.

New 5 load depth glas tray. To convert 1 5 safety factor to 2 0 multiply publish load by 0 75. Matching cover listed below. Aluminum cable tray inside riser 90 each section includes splice plates and hardware.

Generally cable tray sizing is correct when it appears 50 full of cable or wire or when it contains a 50 fill of cables or wire. Cope is the original brand of cable tray. In 1948 thomas jefferson cope developed the first modular cable tray system and introduced it to the electrical industry. Published load safety factor is 1 5.