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No power to outlets, flickering lights, or an intermittent loss of power are usually attributed to a loose wire connection if the circuit breakers are working properly. A loose wire connection can cause the wire to overheat, eventually causing the connection to fail. Sometimes a loose connection will make a crackling noise. A loose wire connection could happen in any of these places:
Troubleshooting Electrical Panels
Troubleshooting electrical panels and circuit breakers should be done only by a qualified electrician.
When an electrician is troubleshooting a loose connection inside an electrical panel, the main circuit breaker that feeds the panel must be turned off. Removing the cover of a live electrical panel poses a risk of serious electrocution and arc flash. After removing the cover and verifying that power is off, all of the circuit breaker wire connections are checked for proper tightness along with main feeder connections and the neutral and ground bus bars.
Loose Wire Connection
Finding a loose wire connection requires the power to be turned off in all situations. Loss of power to one device can be easy to find, loss of power to one or more circuits can be very time consuming. Here are the steps that can be taken to find a loose wire connection.
A loose wire connection can happen during initial construction or when a modification is made to the electrical system (adding a ceiling fan, or replacing a switch, light fixture, or receptacle). After the electrical panel is inspected by a qualified electrician, finding a loose wire connection in part of a circuit, or more than one circuit may take a lot of time.
The process of finding a loose wire connection can vary with the specific symptoms of loss of power including:
Turning off Power
Before trying to find a loose wire connection, power needs to be turned off to three or more circuit breakers. In a Multi-
Align stripped wires
When there are flickering lights or intermittent loss of power to the whole house, and the electrical panel has been inspected by an electrician, call the power company about the problem. There may be a loose connection at the power company transformer.