What is the maximum recommended PBB conductor length and splice condition?

• A. Less than 33 ft and free of splices
• B. Less than 50 ft and may have splices
• C. Exactly 33 ft with one splice
• D. No limit on length or splices

Answer: (A)

PBB conductor runs must be kept short and without splices to preserve consistent electrical characteristics and reliability. Each additional length adds resistance and reactance, and every splice introduces another interface where impedance can change, reflections can occur, and moisture or corrosion can become a risk. By limiting the run to under 33 feet and eliminating splices, you minimize insertion loss, maintain predictable impedance, and reduce maintenance points in the field.

That’s why the recommended practice is a length under 33 feet with no splices. Longer runs or the presence of splices would depart from the guideline, making the option with length under 33 feet and no splices the best fit.