Many wire connection problems are no one’s fault but are simply the result of time.
Wires are under a constant cycle of heating and cooling, expansion and contraction.
Understanding where these problems commonly occur will help you decide how to handle them.
The Spruce / Kevin Norris
Tools and Materials
Here are six very common places that wire connection problems occur.
If you find any that are loose, carefully tighten the screw terminals down onto the wires.
In all likelihood, this will fix the problem.
The Spruce / Kevin Norris
A loose connector is also a common source of problems.
To fix the problem, first,turn off the power to the circuit.
Then, remove the electrical tape from the wires and clean them.
The Spruce / Kevin Norris
This is a clear sign of amateur work and a distinct fire hazard.
To fix this problem, once again, this repair involves first shutting off the power.
Then, the two offending wires are removed from their screw terminal.
The Spruce / Kevin Norris
Note:check that the pigtail wire is the same wire gauge as the circuit wires.
A 15-amp circuit normally uses 14-gauge wire; a 20-amp circuit uses 12-gauge wire.
Then, reconnect the wires to their screw terminal or wire nut.
The Spruce / Kevin Norris
Tug lightly on the wires to confirm they are securely connected.
When this happens, you may notice lights flickering or service problems on fixtures all along the circuit.
Insulation under the connection slot is a code violation.
The Spruce / Kevin Norris
To fix the problem, repairs at the main service panel should be handled by a professionalelectrician.
Amateurs should attempt these repairs only if they are quite experienced and knowledgeable about electrical systems.
Symptoms here will be similar to those with a faulty hot wire.
The Spruce / Kevin Norris
Ground Fault Circuit Interrupters (GFCIs).
Q&A: Push-In Connections on Receptacles.
The Journal of Light Construction.