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Code and Pract ch 5

Installing Wire Mesh Cable Tray

QuestionAnswer
1. WMCT stands for __ (wire module cable tray, wire mesh current tray, wire mesh cable tray, welded mesh cable tray) wire mesh cable tray
2.All cable trays have to be grounded per the NEC T/F False
3. All cable trays must be bonded per the NEC T/F True
4. As a good rule of thumb, ___ additional future growth is recommended on cable tray installations ( 10%,50%,25%,none of the above) 50%
5. 250.96 identifies the requirements for effective __ ( grounding, bonding, bonding and grounding_ bonding
6. Which of the following is involved in standards development (NEC, UL, NEMA, CSA, all) all of the above
7. Reduction of Hazardous Substances (RoHS) is free from six hazardous substances. Which of the following is NOT part of RoHs (Cadmium, Hexavalent Chromium, Lead, Titanium, Mercury, PBB, PBDE Titanium
8.Twenty-four inch cable tray is most secure when it is center hung T/F False
9. When handling/installing multiconductor and/or signal cables only, the maximum inside depth cannot exceed __ and the sum of the cross sectional area shall not exceed __ ( 100mm 4"/25%; 150mm 6"/50%; 200mm 8"/100% 150 mm 6"/50%
10. The sum of the diameters of any mixture of cables (multiconductor, power, lighting, control and signal) which are ___ or larger should not exceed the cable tray width. 4/0 AWG
11. Based on the NECA Manual of Labor Units, the flexibility and openness of WMCT offers what percentage of faster installation (0-10%; 10-20%; 20-30%; 30-40%; 40-50%) 20-30%
12. Installation guidelines for installing cable tray are generally governed by referencing NEMA __ Guide. (VE-1;VE-2; VE-3;all) VE-2
13. The optimum jaw wire cutter angle for the smoothest wire cut, which is required per 392.100(B) (30 degrees; 45; 60; Any angle is considered satisfactory) 30 degrees
14. The definition of passivation is ___ (multiple choice)( reduces surface impurities, cover/contain surface impurities, remove surface impuritites, plating process A process that removes surface impurities which are collected during the manufacturing process(es
15. Manufactured 90 degrees kits are not designed to be field modified to accommodate other angles. T/F False
Created by: JoshHampton
 

 



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