Wire Bus Type Flashcards
Copper or aluminum wire is used to connect equipment bushings to substation bus because it will flex.
True
? is the conductor of choice for substation equipment connections because of its high resistance to corrosion.
AAC
ACSR and AAC conductors have the same current carrying capacity for the same size wire.
False
Reusing bolts on spade terminals may result in a clamping force drop-off of approximately ? after being retightened twice.
30%
Bimetallic AL/CU connections require ? bolts equipped with Belleville-type spring washers.
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.
zinc
Bolted connections are popular for attaching conductors to substation equipment because they permit easy disconnection for maintenance.
True
If silicon bronze bolts are used to bolt a lug to the equipment terminal in a substation, the nuts are torque to ? .
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.
silicon bronze
When an aluminum conductor is connected to a flat copper or electrical bronze equipment terminal, a(n) ? terminal lug is used.
aluminum
When connecting aluminum and copper conductors, the aluminum should be on the bottom to absorb the copper salts from the copper conductor.
False
Aluminum bolts should not be reused after they have been torqued.
True
Do not wire brush ? terminal contact surfaces.
tin or silver plated
A connection joining copper to aluminum terminal pad will be bolted with stainless steel or ? hardware.
galvanized steel
Aluminum bolts must be lubricated to attain proper torque values.
True
