3-4 Test
when installing control cables in a sub trench care should be taken that they
do not cross each other
when splicing a medium voltage cable the tape that is used on the conductor and over the insulation is
semi conducting
the ground grid in a distribution sub is typically made with_copper wire
1/0
Minimum clearance between energized lines and a crane or other equipment in a substation is
10'
the ground grid for a transmission sub is typically made from bare copper in a grid pattern with conductors spaced about_apart
10'
in outdoor subs the grid is buried_below subgrade
12-24"
the number of cap and pin units required in a string of suspension insulators for a 240kv line is typically
14
OSHA regulation part_covers construction in energized substations
1926
when bolting sub steel structures together the bolts are long enough when at least _threads are seen protruding
2
Hard hats worn by electrical workers are tested at
20kv
safety regulations require unqualified workers to add an additional_for every 10kv above MAD
4"
on the grout pouring side of a form a slanted delivery board at approximately_
45"
upon completions a concrete pour you should re check the
Anchor bolts for correct location
When building a collection pit for spill prevention in a sub the pit can be lined with
Bentonite clay
when assembling a sub structure al surfaces that will be in permanent contact with each other after assembly should be
Cleaned
The first most effective action after a spill is to
Contain the fluid before it seeps into water or soil
the most common bolted connection in a substation joins a conductor to an
Equipment terminal
in substations drawings letter are added to substation device numbers to
Further define the device
The size of a sub located at a generating plant is proportional to the
Generator output voltage
The part of the OSHA regulations that mandate each employee complies withal rules
Genral duty clause
OSHA initiates publice-private partnerships which identify_
Hazerd mitigations
if the electric field becomes concentrated in any one point of a cable_
Insulation
the following drawing is of_
Loadbreak switch
in order to properly torque aluminum bolts in a substation, the bolts must be properly
Lubricated
Any oiled full equipment stores within the sub fence must have a
Plastic container
To aid the curing process of a freshly poured concrete pad a
Plastic sheet that acts as a vapor barrier should be used
sub superstructure can be made of aluminum allow steel or
Precast concrete
the two functions of the glaze on a porcelain insulator are to help ead water and_
Shed dirt
To verify that the concrete being used on a substation foundation meets the Required consistency a ______ test should be performed
Slump
the type of insulator used in subs to support conductors and switch gear is the_type
Solid
At subs high voltage surges appear on the electrical strayed are shunted to ground by
Surge arresters
Sub stations without xfmr are called
Switchyard
aluminum substation buseds are welded using MIG or
TIG
A _________ is used to ensure that the anchor bolts are accurate
Template
install a_in each relay to isolate it from the test circuit
Test plug
when building a form around an area to be grouted the form for the grout can be made_
Water tight
A low resistant well designed and well constructed ground grid is necessary to provide improved
Worker Saftey
the bolts of a steel structure in a sub yard should be torqued
after all the bolts are set in place
when doing masonry work in a sub you should not let any grout touchyour skin grout can cause
alkali burns
the symbol below is used for a
bushing type current transformer
to determine size type and start point of a control cable run you should refer to the
cable schedule
after a high voltage test a cable is dangerous because it basically becomes
capacitor
