OSP Aerial Plant & Pole Line Design

Question 1

What is the minimum vertical clearance required for communication cables crossing a public road according to the National Electrical Safety Code (NESC)?

Accepted Answer

16.5 feet

Answer

The NESC requires a minimum vertical clearance of 16.5 feet for communication cables crossing roads open to truck traffic.

Question 2

Which pole classification system is most commonly used in the United States for specifying wood utility poles?

Accepted Answer

ANSI O5.1 Classification

Answer

ANSI O5.1 is the American National Standard for wood poles used in utility construction, defining species, class, and length requirements.

Question 3

In aerial plant design, what is the primary purpose of a down guy wire?

Accepted Answer

To counteract horizontal tension forces on a pole

Answer

Down guys are installed to counteract the unbalanced horizontal tension forces caused by cable pulls at corner, dead-end, or angle poles.

Question 4

What does the term 'make-ready' refer to in aerial OSP design?

Accepted Answer

Modifications to existing pole infrastructure to accommodate new attachments

Answer

Make-ready refers to the engineering work and physical modifications required on existing poles or infrastructure to allow new attachments while maintaining safety clearances.

Question 5

What is 'lashing' in the context of aerial cable installation?

Accepted Answer

Securing aerial cable to a messenger strand using a lashing wire

Answer

Lashing is the process of spirally wrapping a lashing wire around both the messenger strand and the cable to mechanically support the cable in the air.

(OSP) Outside Plant Designer Practice Test

(OSP) Outside Plant Designer Practice Test

OSP Aerial Plant & Pole Line Design