Copper or aluminum wire is used to connect equipment bushings to substation bus because it will flex.
True or False?
Reference: Wire Bus Type, “Wire Bus Type-Connections, Bolting,” Paragraph 1, Last Sentence
True
____ is the conductor of choice for substation equipment connections because of its high resistance to corrosion.
a. AAC
b. ACCR
c. ACSR
d. AW
Reference: Wire Bus Type, “Wire Bus Type-Connections, Bolting,” Paragraph 3, Sentence 1
a. AAC
ACSR and AAC conductors have the same current carrying capacity for the same size wire.
True or False?
Reference: Wire Bus Type, “Wire Bus Type-Connections, Bolting,” Paragraph 3, Sentence 3
False
Reusing bolts on spade terminals may result in a clamping force drop-off of approximately ____ after being retightened twice.
a. 10%
b. 20%
c. 30%
d. 50%
Reference: Wire Bus Type, “Wire Bus Type-Connections, Bolting,” Paragraph 4, Sentence 6
c. 30%
Bimetallic AL/CU connections require ____ bolts equipped with Belleville-type spring washers.
a. aluminum
b. bronze
c. copper
d. stainless steel
Reference: Wire Bus Type, “Wire Bus Type-Connections, Bolting,” Paragraph 4, Sentence 4
d. stainless steel
The antioxidants used when making aluminum-aluminum connections use a natural (petroleum) base to suspend particles of ____, which act as a sacrificial metal.
a. brass
b. copper
c. tin
d. zinc
Reference: Wire Bus Type, “Antioxidants,” Paragraph 1, Sentence 4
d. zinc
Bolted connections are popular for attaching conductors to substation equipment because they permit easy disconnection for maintenance.
True or False?
Substation Construction Guidelines Textbook, Chap. 8, Pg. 245, “About Bolted Connections,” Paragraph 1
True
If silicon bronze bolts are used to bolt a lug to the equipment terminal in a substation, the nuts are torque to ____.
a. 10 ft-lb
b. 20 ft-lb
c. 30 ft-lb
d. 40 ft-lb
Substation Construction Guidelines Textbook, Chap. 8, Pg. 245, “About Bolted Connections,” Paragraph 3, Sentence 2
d. 40 ft-lb
When silicon bronze bolts are used on copper or electrical bronze terminal lugs, ____ washers are usually used under both the bolt heads and nuts.
a. Belleville
b. copper
c. silicon bronze
d. stainless steel
Substation Construction Guidelines Textbook, Chap. 8, Pg. 245, “About Bolted Connections,” Paragraph 3, Last Sentence
c. silicon bronze
When an aluminum conductor is connected to a flat copper or electrical bronze equipment terminal, a(n) ____ terminal lug is used.
a. aluminum
b. copper
c. silicon bronze
d. siver plated
Substation Construction Guidelines Textbook, Chap. 8, Pg. 245, “About Bolted Connections,” Paragraph 4, Sentence 1
a. aluminum
When connecting aluminum and copper conductors, the aluminum should be on the bottom to absorb the copper salts from the copper conductor.
True or False?
Substation Construction Guidelines Textbook, Chap. 8, Pg. 245, “About Bolted Connections,” Paragraph 5, Sentence 1
False
Aluminum bolts should not be reused after they have been torqued.
True or False?
Substation Construction Guidelines Textbook, Chap. 8, Pg. 246, “Installation Tips,” Bullet 3
True
Do not wire brush ____ terminal contact surfaces.
a. aluminum
b. copper
c. silicon bronze
d. tin or silver plated
Substation Construction Guidelines Textbook, Chap. 8, Pg. 246, “Procedures,” Number 3, Sentence 2
d. tin or silver plated
A connection joining copper to aluminum terminal pad will be bolted with stainless steel or ____ hardware.
a. aluminum
b. bronze
c. copper silicon
d. galvanized steel
Substation Construction Guidelines Textbook, Chap. 8, Pg. 247, Table 1, “Typical Connection Hardware”
d. galvanized steel
Aluminum bolts must be lubricated to attain proper torque values.
True or False?
Substation Construction Guidelines Textbook, Chap. 8, Pg. 247, Number 5, Note
True
A lubricated aluminum alloy nut is torqued to ____ on a ½-inch bolt.
a. 15 ft-lb
b. 20 ft-lb
c. 25 ft-lb
d. 30 ft-lb
Substation Construction Guidelines Textbook, Chap. 8, Pg. 247, Table 2, “Normal Torque Values”
c. 25 ft-lb
To avoid seizing, it is often recommended that stainless steel bolts be fitted with ____ nuts.
a. aluminum
b. bronze
c. copper-clad
d. galvanized steel
Substation Construction Guidelines Textbook, Chap. 8, Pg. 247, Number 4, Note
b. bronze
The table in the text reference recommends a torque setting of ? for ½-inch silicon-bronze nuts and bolts.
a. 37 ft-lb
b. 40 ft-lb
c. 60 ft-lb
d. 74 ft-lb
Substation Construction Guidelines Textbook, Chap. 8, Pg. 247, Table 2, “Normal Torque Values”
b. 40 ft-lb
Duroze or Everdur bolts are typically used for ____ connections.
a. aluminum-to-aluminum
b. bronze-to-aluminum
c. copper-to-aluminum
d. copper-to-copper
Substation Construction Guidelines Textbook, Chap. 8, Pg. 249, “Installation Procedures,” Paragraph 8
d. copper-to-copper
All aluminum-bronze alloy and copper-bronze alloy terminal pads require an antioxidant to be applied to the contact surfaces.
True or False?
Reference: Wire Bus Type, “Antioxidants,” Paragraph 2, Sentence 1
False
