How to Fix a Loose Wire in the Breaker Box

How to Fix a Loose Wire in the Breaker Box

A loose wire in the breaker box is a fire hazard and must be addressed by a Licensed Electrical Contractor. Working inside the main service panel is dangerous — even with the main breaker turned off, the service entrance conductors connecting the utility to the panel remain energized at all times and cannot be de-energized without the utility disconnecting power at the meter. Do not attempt to tighten wires in the panel yourself unless you are a licensed electrician.

Signs of a Loose Connection in the Panel

• Flickering or intermittent power loss on one circuit
• A breaker that trips for no apparent reason and cannot be reset
• Burning smell from the panel area
• Visible discolouration or scorch marks on a breaker or bus bar connection
• A buzzing, crackling, or popping sound from the panel

What a Licensed Electrician Does

A Licensed Electrical Contractor will shut off the main breaker to de-energize the panel buses, identify the loose connection, and re-terminate the conductor using the correct torque. For aluminum service entrance conductors, anti-oxidant compound is used at the connection point. If a breaker shows heat damage or the bus bar is discoloured, the breaker or the panel section may need to be replaced — a visual inspection of the existing damage will determine the extent of repair needed. An ESA permit is required for repairs that involve replacing breakers or modifying circuit connections.

EZSMART responds to panel issues across Ontario including loose connections, failing breakers, and panel inspections. Contact us if you notice any signs of a problem in your electrical panel.

Amir Azimipour

Electrician Since 2008 Journeyman Electrician Designated Master Electrician at EZSMART Corp