Wire Bus Type

Question 1

Copper or aluminum wire is used to connect equipment bushings to substation bus because it will flex.

Answer 1

True

Question 2

? is the conductor of choice for substation equipment connections because of its high resistance to corrosion.

Answer 2

AAC

Question 3

ACSR and AAC conductors have the same current carrying capacity for the same size wire.

Answer 3

False

Question 4

Reusing bolts on spade terminals may result in a clamping force drop-off of approximately ? after being retightened twice.

Answer 4

30%

Question 5

Bimetallic AL/CU connections require ? bolts equipped with Belleville-type spring washers.

Answer 5

stainless steel

Question 6

The antioxidants used when making aluminum-aluminum connections use a natural (petroleum) base to suspend particles of ? , which act as a sacrificial metal.

Answer 6

zinc

Question 7

Bolted connections are popular for attaching conductors to substation equipment because they permit easy disconnection for maintenance.

Answer 7

True

Question 8

If silicon bronze bolts are used to bolt a lug to the equipment terminal in a substation, the nuts are torque to ? .

Answer 8

40 ft-lb

Question 9

When silicon bronze bolts are used on copper or electrical bronze terminal lugs, ? washers are usually used under both the bolt heads and nuts.

Answer 9

silicon bronze

Question 10

When an aluminum conductor is connected to a flat copper or electrical bronze equipment terminal, a(n) ? terminal lug is used.

Answer 10

aluminum

Question 11

When connecting aluminum and copper conductors, the aluminum should be on the bottom to absorb the copper salts from the copper conductor.

Answer 11

False

Question 12

Aluminum bolts should not be reused after they have been torqued.

Answer 12

True

Question 13

Do not wire brush ? terminal contact surfaces.

Answer 13

tin or silver plated

Question 14

A connection joining copper to aluminum terminal pad will be bolted with stainless steel or ? hardware.

Answer 14

galvanized steel

Question 15

Aluminum bolts must be lubricated to attain proper torque values.

Answer 15

True

Question 16

A lubricated aluminum alloy nut is torqued to ? on a 1/2-inch bolt

Answer 16

25 ft-lb

Question 17

To avoid seizing, it is often recommended that stainless steel bolts be fitted with ? nuts.

Answer 17

bronze

Question 18

The table in the text reference recommends a torque setting of ? for 1/2-inch silicon-bronze nuts and bolts.

Answer 18

40 ft-lb

Question 19

Duroze or Everdur bolts are typically used for ? connections.

Answer 19

copper-to-copper

Question 20

All aluminum-bronze alloy and copper-bronze alloy terminal pads require an antioxidant to be applied to the contact surfaces.

Answer 20

False