AEP Installation Techniques 3

Question 1

When installing aerial bundled cable (ABC) on a distribution system, what type of support hardware is used to attach the cable to the pole?

Accepted Answer

Insulated suspension clamps with messenger support

Answer

Aerial bundled cable uses insulated suspension clamps that support the integral messenger strand while maintaining the insulation system.

Question 2

What is the minimum horizontal distance that primary distribution conductors must maintain from a building's window or door per NESC rules?

Accepted Answer

3 feet

Answer

NESC Rule 234 requires primary conductors to maintain at least 3 feet of horizontal clearance from windows, doors, and other building openings.

Question 3

During installation of a new overhead line, what is the purpose of sagging conductors before final clamping?

Accepted Answer

To set the correct conductor tension and clearance at design temperature

Answer

Sagging sets the conductor to the design tension so that ground clearance and mechanical loads remain within specified limits across the full temperature range.

Question 4

When making a bolted joint on a copper bus bar, what must be applied between the mating surfaces?

Accepted Answer

Anti-oxidant joint compound

Answer

Anti-oxidant joint compound prevents oxidation on copper contact surfaces, ensuring low-resistance, reliable electrical connections.

Question 5

What is the correct bend radius for rigid metallic conduit (RMC) during installation to prevent conductor damage?

Accepted Answer

At least 6 times the conduit trade size

Answer

NEC 344.24 requires bends in RMC to have a radius of not less than 6 times the conduit trade size to prevent conductor insulation damage.

(AEP) American Electric Power Practice Test

(AEP) American Electric Power Practice Test

AEP Installation Techniques 3