Arc Intense luminous discharge formed by the passage of electric current across a space between electrodes. Arcing of Output Leads Generation of an electrical arc between the output leads of a ballast. May deactivate conventional electronic ballasts. Ballast Hum Sound generated by the vibration of laminations in the electromagnetic field that transforms the current for discharge lamp use. Ballast Losses Power which is supplied to a ballast but is not converted into lamp energy.
Ballast loss is dissipated as heat.
F. Class P Thermal Protector A switching device sensitive to current and heat that automatically disconnects ballast if the ballast temperature exceeds UL temperature limitations. Coil Windings of copper or aluminum wire surrounding the steel core in ballasts. Conformal Coating Material which surrounds and adheres to components and protects them from heat and moisture. Core Component of electromagnetic ballast that is surrounded by the coil. Core is comprised of steel laminations or solid ferrite material.