During the annual test of the solid electrical connections in the emergency communication system, what should be verified?

During the annual test of the solid electrical connections in the emergency communication system, what should be verified?

• A. Loose connections
• B. Corrosion
• C. Oxidation
• D. Overheating

Answer: (B)

Corrosion on the contact surfaces of solid electrical connections is what the annual check focuses on. Corrosion interferes with the metal-to-metal contact, increasing resistance and potentially leading to hot spots, arcing, or complete failure when the emergency system is needed. During the test, inspect all solid connections—terminals, lugs, and bus bars—for signs of corrosion, such as discoloration, oxide/verdigris buildup, or pitting, and verify that there is a clean, tight, and conductive contact. If corrosion is found, clean or replace the affected parts and reseat and retorque to the proper specification to ensure the connection remains solid and reliable.

Corrosion on the contact surfaces of solid electrical connections is what the annual check focuses on. Corrosion interferes with the metal-to-metal contact, increasing resistance and potentially leading to hot spots, arcing, or complete failure when the emergency system is needed. During the test, inspect all solid connections—terminals, lugs, and bus bars—for signs of corrosion, such as discoloration, oxide/verdigris buildup, or pitting, and verify that there is a clean, tight, and conductive contact. If corrosion is found, clean or replace the affected parts and reseat and retorque to the proper specification to ensure the connection remains solid and reliable.