Fire Alarm Ground Fault Warnings Require Attention!

Fire Alarm Ground Fault Warnings Require Attention!

When your fire alarm control panel reveals a ground fault warning this is a situation that requires immediate attention from your fire alarm company.  A ground fault occurs due to inadvertent contact between the energized conductor and ground, which can occur through a grounded conduit such as a building frame or equipment.  The return path of the current experiences a fault through the grounding system, creating an accidental grounding of the conductor.  

 

Causes of Ground Faults in Fire Alarms

 

Ground faults often occur due to a breakdown of insulation, a direct short circuit, crushed or pinched wires, or wires that become exposed to water.   Electrical wires can short circuit by touching another electrical circuit, anything metal in the building structure or an electrical junction box.  When a protected circuit is exposed to external voltage, it can become either partially or completely grounded.  

 

Insulation breakdown can occur from poor installation that leaves wires exposed to volatile situations such as vibrations in a building.  For example, when wires are installed over ceiling panels they can fall and settle onto metal building framework, and may come in contact with the building’s metal structure that is bonded to the Earth.  Ground faults can affect both positive and negative leads, and the metallic shield around communication wires.

Fire Alarm Control Panel Requirements

Most fire alarm control panels are designed to monitor and detect potential problems in the wiring including short circuits, ground faults or poor connections.  When your fire alarm panel reveals a ground fault warning, it is subject to electronic failure not caused by any equipment malfunction.

Do not ignore ground fault warnings, as it is against code requirements to leave your fire alarm in this status.   According to NFPA 72, the guidelines published by the National Fire Protection Association (NFPA) containing the National Fire Alarm and Signaling Code, pathway survivability is required of all fire alarm transmitting systems, including the ability of any optic fiber, conductor, radio carrier or any other means of transmitting system information in operational mode during a fire emergency.

Fire Alarm Inspection and Repair Companies

If you experience a ground fault in your fire alarm system, notify your certified fire alarm inspection and repair company immediately.  Leaving your system in this state leaves it vulnerable to power surges that can damage equipment and cause avoidable and costly repairs, and even worse can leave your building and occupants unprotected during a fire emergency.

High Rise Security Systems is a licensed and certified fire alarm inspection and repair company with experience in diagnosing and repairing ground faults in fire alarm systems.  Do not leave your occupants in harm’s way, contact us immediately to service your fire alarm to maintain operational status and code compliance.  

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