What is Arc?
An arc occurs when electricity jumps between two conductors through the air, creating a visible discharge of energy. This phenomenon can happen in electrical circuits due to voltage imbalances, damaged insulation, or improper connections.
In HVAC and electrical systems, arcs can occur in circuit breakers, switches, and faulty wiring. Arc faults generate intense heat, which can lead to electrical fires, equipment damage, or system failures. This is why arc fault circuit interrupters (AFCIs) are used to detect and prevent dangerous arcing conditions in residential and commercial buildings.
Arcing is also a common issue in HVAC contactors and relays, where worn-out electrical contacts can create sparks that degrade the system over time. Regular maintenance and inspections help prevent arc-related failures, improving safety and system longevity.
