Exposed wiring occurs when the insulated casing gets damaged in some way causing it to fall off leaving bare wire. This may be a little area or a whole wire depending on the situation. If the wire is rubbing against something sharp it can not only expose the wire, but it could sever the wires as well. Dry rot can also case casing to fall off of wires leaving them exposed.
Most central heating and cooling units are split where part of the unit is inside the home and the other is outside. Both units will have wiring coming from the main unit going into the wall and eventually the circuit breaker. Frayed or exposed wires need immediate repair in case of an electrical fire.
HVAC units are designed with safety features built in that will shut the unit off if it senses danger. The outdoor fan make trigger off once it reaches a certain speed, because the electrical current is too high. Even though these safety features are well warranted, triggering them isn’t good for the overall health of the ac unit. It’s important to have any irregular operations, starts or stops check by a professional.
Circuit breakers are the components that the main electrical feed to the home uses to distribute power. As a safety feature, circuit breakers are designed to “break” or “trip” when too much power is being pulled. Simply resetting the breaking is addressing the symptom, but not the problem. A tripped circuit breaker can be warning to home owners of faulty wiring, blocked airflow, dirty ac coils, blocked registers or vents, or unreasonable demands on the HVAC system. Without this automatic shut-down, your home would be susceptible to fire or damage due to faulty wiring.