Aerial entrances to small buildings should be limited to ________ cable pair or less.

6 cable pairs is far below the defined standard threshold and does not represent any recognized aerial entrance limit for small buildings.

12 cable pairs is below the standard limit and does not correspond to the recognized maximum for small building aerial cable entrances.

25 cable pairs may appear in other capacity contexts but does not represent the correct standard limit for this specific aerial entrance application.

50 cable pairs is below the industry-specified 100-pair maximum and is not the defined threshold for small building aerial entrances.

100 cable pairs is the recognized OSP industry standard maximum for aerial entrances to small buildings, as defined in BICSI's Outside Plant Design Reference Manual and related telecommunications standards. This limit prevents overloading the aerial entrance facility, ensures the drop remains physically manageable, and keeps the entrance point within safe mechanical load tolerances.