What size and type conductors do both STP and STP-A use?

What size and type conductors do both STP and STP-A use?

• A. 22 AWG solid copper
• B. 24 AWG stranded copper
• C. 20 AWG solid copper
• D. 18 AWG stranded copper

Answer: (A)

Conductor size and construction for shielded twisted pair cables used in fixed installations are chosen to give stable electrical characteristics and reliable terminations. Both STP and STP-A use 22 AWG solid copper conductors because a solid conductor provides a single rigid path that helps maintain consistent impedance along the cable and makes terminations at panels and connectors robust. The 22 AWG size strikes a practical balance: it isn’t overly stiff for routing in standard trays and connectors, yet it remains easy to terminate and provides lower resistance than thinner gauges. Stranded conductors, while more flexible, are typically reserved for patch cords or situations where bending flexibility is required, and they can complicate fixed-term connections and impedance consistency. Larger solid gauges would be harder to terminate and might not fit standard hardware, while smaller gauges could introduce higher resistance and less mechanical durability over the same runs. Thus, 22 AWG solid copper is the best match for both STP and STP-A.

Conductor size and construction for shielded twisted pair cables used in fixed installations are chosen to give stable electrical characteristics and reliable terminations. Both STP and STP-A use 22 AWG solid copper conductors because a solid conductor provides a single rigid path that helps maintain consistent impedance along the cable and makes terminations at panels and connectors robust. The 22 AWG size strikes a practical balance: it isn’t overly stiff for routing in standard trays and connectors, yet it remains easy to terminate and provides lower resistance than thinner gauges.

Stranded conductors, while more flexible, are typically reserved for patch cords or situations where bending flexibility is required, and they can complicate fixed-term connections and impedance consistency. Larger solid gauges would be harder to terminate and might not fit standard hardware, while smaller gauges could introduce higher resistance and less mechanical durability over the same runs.

Thus, 22 AWG solid copper is the best match for both STP and STP-A.