Quiz yourself: power industry best practices for fiber deployment

Question page 4 (of 5)

In the questions below, "transmission" refers to installations on lines >100 kV and "distribution" refers to installation on lines < 100 kV. NESC refers to the National Electrical Safety Code which governs all electric utility installations in the U.S. (and any other jurisdictions that adopt it).

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#31. (ADSS) What's the maximum line angle you use for tangents? Suspensions? (Shortcut to answer page 4)

#32. (ADSS) Do you "float" your tangents and suspensions with a shackle? (Shortcut to answer page 4)

#33. (ADSS) WhatÕs the ratio of dead-ends to tangents in your system? Dead-ends to suspensions? (Shortcut to answer page 4)

#34. (Distribution - U.S.) Do you always comply with the NESC requirements for clearances and for maintaining a 40" safety zone? (Shortcut to answer page 4)

#35. (Distribution) What per cent of poles do you typically have to replace on ADSS projects in order to maintain NESC clearances? (Shortcut to answer page 4)

#36. (Distribution) Do you run ADSS on any routes where you have a history of insulator contamination problems? If so, did you consider dry-band arcing in your design? (Shortcut to answer page 4)

#37. (Transmission) Do you sag your OPGW and ADSS with a dynamometer, sight lines or a stop watch? If an outside contractor installs your cable, does someone from your utility check the sags? (Shortcut to answer page 4)

#38. (Transmission) Do you use OPGW or ADSS on your transmission lines? How did you pick which to use? (Shortcut to answer page 4)

#39. (Transmission - OPGW only) Have you had any OPGW failures due to lightning? If so, how many? How did you pick the fault-current rating for your cable? (Shortcut to answer page 4)

#40. (Transmission - ADSS only) Do you use corona coils? If so, do your inspectors check to ensure that they've all been put on? Do you use vibration dampers? Again do you check that all get installed? (Go on to question page 5 or check answer page 4)

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