Fire Ants love electrical boxes but the wiring does not. In this case there were corroded wires found. Wasp nests and Geckos like these areas too.
Electric Service Panels.
Most homes have 2 service panels. One located outside and one inside the garage. The variations are older homes that have the inside panels located in the hallway, laundry room or a bedroom closet.
The common things found with service panels are:
No Anti-Oxidant grease found on Aluminum wire connections. This anti-oxidant grease is present on aluminum wires to help prevent oxidation and corrosion.
Ground wires and neutral wires are installed on the same buss bar. This is an older wiring practice that is no longer allowed on newer homes. Newer codes require that the ground wires and neutral wires are separated and installed on separate buss bars so that all of the circuits are separated from each other.
Burned, melted or corroding wires or breakers. This is a fire hazard and should be corrected as soon as possible.
Breakers are not sized correctly for the circuit, appliance or for the size of the wire. The wiring of the house is sized for the load. For example, a Dryer requires a 30 amp breaker with 10 gauge wire. If the breaker is too small, it will keep tripping off. If the wire is too small, it might melt or catch on fire.
No Ground wire installed. The electrical system needs to be grounded to a copper rod, metal water supply pipe or re-bar buried in the concrete foundation. Without this wire you risk becoming the path for ground and getting electricuted.
No labels to the breakers. All breakers should be labeled as to where these wires go, such as dryer, range, bedrooms, kitchen or a/c unit.
This is a Federal-Pacific service panel. The tape is covering holes in the metal cover. In this case, Billy Bubba and "Joe 6 Pack" were not licensed electricians when they did this fine example of professionalism.
Federal Pacific or Zinzco Service Panel: These are old service panels that years ago had problems with the breakers either melting or burning or the breakers would not trip when shorted out. This condition led to fires or melted wiring. These panels should always be examined by an electrician and consider replacing these panels with new panels and breakers.
Tube Type Fuses or Glass Fuses. These are also very old style fuses before snap breakers were invented. The most common problems found are the glass fuses are replaced with fuses that are too large for the wiring because someone wanted to run their microwave, toaster oven, coffee pot and counter top TV all at the same time but kept burning the correct size fuse. The tube type fuse is commonly used for 220 volt circuits such as a dryer or oven. The problem here is that if there is a short on one side of the circuit, the 2nd wire does not trip and the appliance could short, overheat or just not work correctly. Newer breakers of this type or connected together so if one wire shorts out it trips the other at the same time.
This is another example of Billy Bubba and Joe 6 pack hard at work.
Junction Box not used for wire connections. All splices must be installed into a metal junction box with wire clamps and metal cover for safety reasons.
Aluminum Branch Wiring Found. Aluminum main service wires to dryers, a/c units and stoves are still commonly used because of the cost. When installed correctly they work just fine. The Branch Wiring is an old practice from the 1970's where aluminum wire was used in the house for lights and outlets etc. This is generally not a problem if the wires are connected to aluminum approved connections to outlets and light fixtures. Occasionally these wire connections become loose because aluminum will expand and contract more than copper and the connections may become loose, arc and cause fires. Aluminum branch wiring should be inspected by an electrician in more detail to make sure everything is OK.
No Grounded Outlets found in the house. New homes have all outlets grounded. Older houses don't generally have grounded outlets especially at the bedrooms and hallways. Grounded outlets are generally not necessary for floor lights, TV's, vacuum cleaners other small appliances. Grounded outlets are more important for water related appliances and computers.
Exposed wires are not a safe condition as seen by this picture.
There are other conditions that could be present but too numerous to mention here. If you have more detailed questions, you can call any time.