AC-Ch. 9 Tree Support And Lightning Protection

Question 1

Uppermost point of a tree lightning protection system

Answer 1

Air terminal

Question 2

Steel wire rope of various constructions designated by the number of strands in the rope and the number of wires in each strand commonly used in cabling in Australia and New Zealand

Answer 2

Aircraft cable

Question 3

Specialized nut used in cabling trees that have a large eye for attaching a cable to a threaded rod

Answer 3

Amon-eye nut

Question 4

Hardware to which the cable termination is affixed in a cabling or guying installation.

Answer 4

Anchor hardware

Question 5

Radius of an object around which the line passes.

Answer 5

Bend radius

Question 6

Device used to tighten lags and aid in cable installation

Answer 6

Cable aid

Question 7

Mechanical device that grasps and holds the cable during installation.

Answer 7

Cable grip

Question 8

Metal knob that can be affixed to the ends of steel cable strands to terminate the cable installation.

Answer 8

Cable stop

Question 9

Metal wires, cables, and bus bar used for caring electric current. Conductors may be solid or stranded.

Answer 9

Conductor

Question 10

Cable-termination devices that must be used to terminate extra-high-strength (EHS) tree support system cable to anchor hardware. May be used with common grade cable.

Answer 10

Dead-end grip

Question 11

Any of several cabling system that utilize nonrigid materials for tree support systems.

Answer 11

Dynamic cable system

Question 12

Type of seven-strand steel cable, often used to cable trees. Stronger but less flexible than common-grade cable must be terminated with dead-end tree grips.

Answer 12

Extra-high-strength cable (EHS)

Question 13

Steel cable construction in which seven strands are twisted together in a spiral pattern. Used to add supplemental structural support to trees. Terminated by wrapping onto itself

Answer 13

7-strand common grade cable

Question 14

Cable anchor with a closed eye usually machine threaded. Only drop forged ones are accepted in the United States

Answer 14

Eye bolt

Question 15

In cabling a closed termination loop hand formed in common grade cable by wrapping the successive strands back upon the standing part to attach the cable to anchor hardware

Answer 15

Eye splice

Question 16

Splice that forms a closed eye or loop

Answer 16

Eye splice

Question 17

Metal rod used in grounding a tree lightning protection system

Answer 17

Ground rod

Question 18

Either a ground rod or ground plate. Used in grounding a tree lightning protection system.

Answer 18

Ground terminal

Question 19

Lag threaded cable anchor with a closed eye

Answer 19

Lag eye

Question 20

Lag threaded cable anchor with an open eye

Answer 20

Lag hook/J hook

Question 21

Bracing rod with a coarse thread pattern that is typically screwed into a pre-drilled hole that is smaller in diameter than the anchor or rod

Answer 21

Lag threaded rod

Question 22

Bracing rod with a fine thread pattern that is used with a nut and washer and installed through a pre-drilled hole that is larger in diameter than the rod

Answer 22

Machine-threaded rod

Question 23

Act of bending, rounding, or flattening the end of through hardware for the purpose of preventing the nut from backing off.

Answer 23

Peen

Question 24

Rigid brace, acting in compression to support a tree, tree branch or utility pole

Answer 24

Prop (propping)

Question 25

Type of drill bit with an open spiral form. Used to drill holes in trees for cable or bracing installation

Answer 25

Ship auger

Question 26

Phenomenon if a lightning strike leaving its current path and jumping to reach a better grounded conductor.

Answer 26

Side flash

Question 27

Cabling system that utilizes rigid materials such as rods and steel cable to limit movement and provide constant support of limbs.

Answer 27

Static cable system

Question 28

Significant difference in electrical potential which can lead to electrocution if contacted simultaneously

Answer 28

Step voltage

Question 29

Metal rod used to support weak sections or crotches of a tree. Also called bracing rod.

Answer 29

Threaded rod