User: What are signs of corrosion in electrical systems?
Assistant: Corrosion in electrical circuits can be caused by mineral deposits, moisture, or microorganisms which can cause various damage to electrical systems.  Some common symptoms of corrosion are erratic or unstable power, damage to the system wiring and equipment, and unusual electrical discharges.  Generally it is recommended to assess electrical equipment regularly and to take precautions to prevent moisture buildup or corrosion.  In certain circumstances it may be necessary to have a professional electrical system inspection for advanced indicators of corrosion or damage.