Fire Alarm Earth Fault

To establish this you have to remove all the external wiring from the control panel then using an electrical test meter to check to see if the earth fault on the panel has.

Fire alarm earth fault. 21 november 2006. A ground fault occurs in a building though when something changes to the wiring. This higher voltage output will allow you to locate the source of the ground fault more quickly and accurately saving you a great deal of time in the field. 05 february 2011 04 25 pm totalsparky posts.

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. Most fire alarm control panels can warn that a ground fault exists but can t say where it is so technicians have to use a multimeter to pinpoint the fault. In a fire alarm system a ground fault is an electrical leakage to ground. Fire alarm earth fault topic summary.

Contacting your fire equipment service provider a certified fire alarm technician or a qualified electrician would be the prudent thing to do. I ve worked with fire. When it is installed the system shouldn t have any ground faults. As i mentioned above it happens almost daily usually between 6 30 and 8 in the morning during weekdays while later in the morning and in the evenings during the weekend.

Earth faults can be difficult to trace a starting point is you have to establish whether the earth is on the fire alarm control panel or the external wiring circuits. Of course when the fault goes away also the setting silencing the buzzer is deactivated so in the following occurrence the fire alarm starts buzzing again and so on. Positive and negative a ground fault on the positive or hot side of the circuit usually results in a short circuit and immediate tripping of the circuit breaker. Many of the messages you see displayed here indicate a fault with your system that may require immediate attention and service.

05 february 2011 04 25 pm status. In order to locate a soft ground fault as easily as the fire alarm control panel we will need a ohmmeter that has a slightly higher output voltage than the factory range of 1 5 3 volts dc. When your fire alarm control panel reveals a ground fault warning this is a situation that requires immediate attention from your fire alarm company.