2-5-4 Flashcards
Before training a cable into position, the cable end should be thoroughly inspected and it is also important that the cable be __?__.
free of all contaminants and moisture
After reading the written instructions and studying the drawing, the workman should write the __?__ on the drawing.
dimensions for the specific cable and voltage
The two most common cable jackets covered in this lesson are rubber or thermoplastic and __?__.
metalic
For cleaning a cable jacket, a cable cleaning solvent is recommended.
false
Two methods that can be used for penciling the cable insulation include using a sharp knife and non-conductive abrasive cloth, and using a(n) __?__.
mechanical penciling tool
Refer to the instructions for cable tools. The Type JRT Jacket Removal Tool will remove the jacket from any solid dielectric shielded cable.
false
The type of workmanship discrepancy that is the number one cause of cable accessory failure is __?__.
cuts made into insulation during removal of semi conductor
The number one problem found when removing the semi-conductor from the insulation of the cable is __?__.
rings cut to deep into insutaion
There are __?__ layers of cable that will be stepped during cable preparation.
6
The __?__ is the outermost layer that is stepped during cable preparation.
jacket
The conductor is never stepped during cable preparation.
false
The two knife blades that are recommended for cable preparation are the hook blade and the __?__ blade; both provide good control for precision scoring, slitting and cutting.
square tip
A wood folding ruler and a(n) __?__ caliper are two measuring tools that should be included in a cable splicing toolbox.
outside
When cutting off the end of a large diameter cable (e.g. a 15 kV, 3-conductor, 500 kcmil, interlocked armor cable), a __?__ would be a good traditional hand tool choice for making the cut square.
hacksaw
A craftsman would include a roll of cotton chalk line with his cable preparation tools because it works well for cutting through polyethylene insulations and cuts fast and will not damage the underlying conductor.
true
The layer of a cable that a stripping tool, such as the speed stripper, is designed to remove is the __?__.
insulation
Scoring tools are primarily used for removing the semi-con layer of cable.
true
When preparing a concentric neural cable, care must be taken to not damage or break off any of the neutral strands because damage to the individual neutral strands will __?__.
derate and compromise the circut
A common field practice to protect the metallic shielding and semi-conducting layer, of a three-conductor armored cable from being damaged by the cut-back edge of armor is to leave a(n) __?__.
short length of cables filler material extended beyond the armor cut back
A __?__ is sometimes specified for ring-cutting the semi-conducting insulation shield instead of ring-scoring it with a knife or scoring tool.
round file (rat tail)
Before starting the installation of a splice, termination or elbow, the prepared cable (semi-conducting shields and insulation) should be washed down with a cable cleaning solvent.
false
The abrasive cloth use when preparing cable insulation is to be of __?__ grit.
120
The abrasive cloth to use when preparing cable insulation must be __?__.
electrical grade
The abrasive cloth used when preparing cable insulation must be made of abrasive Aluminum oxide.
true
A cable’s strand shielding layer is not stepped like the other layers of the cable. It is removed during the insulation removal step because the strand shield and insulation layers are bonded together and are removed as a single piece.
true
