What should you use to clean exterior rust and corrosion on cables when no internal corrosion is detected?

What should you use to clean exterior rust and corrosion on cables when no internal corrosion is detected?

• A. Solvent wipe
• B. Abrasive brush
• C. Dry, coarse weave rag
• D. Water rinse

Answer: (C)

When exterior rust is present but there’s no sign of internal corrosion, cleaning should be done dry to avoid introducing moisture or driving contaminants into the cable. A dry, coarse weave rag effectively removes surface rust and corrosion without abrading copper strands or soaking the insulation. It provides enough mechanical action to lift the rust without leaving behind solvents or water that could promote further corrosion. Solvent wipes can leave chemical residues or damage coatings, a water rinse introduces moisture that can seep into the jacket or insulation, and an abrasive brush risks nicking or weakening the outer jacket or strands. After cleaning, inspect for any underlying damage, and replace the cable if there are any signs of internal corrosion or compromised integrity.

When exterior rust is present but there’s no sign of internal corrosion, cleaning should be done dry to avoid introducing moisture or driving contaminants into the cable. A dry, coarse weave rag effectively removes surface rust and corrosion without abrading copper strands or soaking the insulation. It provides enough mechanical action to lift the rust without leaving behind solvents or water that could promote further corrosion. Solvent wipes can leave chemical residues or damage coatings, a water rinse introduces moisture that can seep into the jacket or insulation, and an abrasive brush risks nicking or weakening the outer jacket or strands. After cleaning, inspect for any underlying damage, and replace the cable if there are any signs of internal corrosion or compromised integrity.