WLE week 2 Flashcards
the 2 objectives of grounding is to _________ the time it takes to trip a circuit and to _________ the current flow across the linemans body
minimize. limit
every job does not have to start with a “tailboard” or safety briefing, according to osha true or false?
false
in order to properly ground a line, there is a 5 step process what is the first step?
idtcg
in order to properly ground a line, there is a 5 step process what is the 5th step?
idtcg
in order to properly ground a line, there is a 5 step process what is the 3rd step?
idtcg
before grounds are applied, the lineworker must treat a conductor as if it is energized? true or false
true
before grounds are applied, the lineworker must treat a conductor as if it is energized and he/she must observe the?
minimum approach distance
which method of testing the conductor is not a viable method and should be avoided?
buzzing method (fuzzing)
cleaning the conductor before you ground it, provides a_______-__________ path for _________ to flow, because dirt, oxidation and corrosion increase resistance?
low resistance. current
the system neutral must be grounded at least _______ times per mile?
4
a “TGR” is a what?
Temporary grounding rod
the deeper the TGR is placed in the ground, the higher the resistance will be true or false
false
static wires on transmission structures, can consist of which two conductors?
fiber optic . steel
which grounding source is accepted by some companies and frowned upon by others?
anchor rod
from the two grounding methods we discussed which is considered the best method?
EPZ
EPZ stands for?
Equipotential zone grounding
EPZ does what?
keeps lineman safe
the golden rule of grounding, states that the conductor is attached to first and then the ground source and when removing the grounds, you take the ground off first then the conductor true or false?
false
minimum size size for grounding cable is
2 AWG
the sheath on the outside of the grounding cable provides ___________ electrical protection?
no
when inspecting your grounds, you are looking for missing pieces, loose connections and severe _________ and ___________ ?
cuts and scrapes
what must be done to a grounding cable that has experienced fault current?
removed and tested
where would your ground source be on a 3 wire distribution system?
ground rod
according to the book, which term means uninterrupted flow of current?
continuity
where would your ground source be on a 4 wire distribution system?
neutral
OSHA requires a lineman to wait at least 5 min before grounding which piece of equipment?
capacitor bank
a single ground connected to the supply conductor, or the phase that is being worked on is reffered to as?
personal ground
a grounding spike clamp is not used as a protective ground?
true
how do you establish EPZ for underground?
EPZ mat
insulated protective cap is also known as?
dummy cap or a dead end cap
with underground systems ________ and _______ are critical
tagging and identification
when working underground what is the critical first step?
cable identification
after grounding the end of the cable not being worked on, what must you install at the worksite?
EPZ mat
osha was founded in ?
1970
osha states that every job should begin with?
job briefing
protective grounds must be installed to protect?
each employee
reasons for grounding?
protect the employee and protect the system
