In some larger buildings emergency power to exit signs and emergency light fixtures is provided by an emergency generator.
Exit sign light not working.
To know if the battery is bad in your exit sign push the test button on the bottom edge of the exit sign and hold for thirty seconds a broom handle comes in handy for this.
Step 1 check the power source if the light is out.
Replacing an exit sign is a fairly straightforward do it yourself job if you have a bit of experience with electrical work.
The signs require troubleshooting as soon as anything starts to go wrong with them.
Therefore an exit sign that appears to be working normally may not work at all during a power failure because the low voltage bulbs have burned out.
Led exit signs last for decades without burning out making this a convenient upgrade.
If it does not light up for the entire thirty seconds you have a bad exit sign battery.
Keeping emergency exit signs in working order is a high priority.
Checking multiple emergency or exit sign for bad batteries.
In some larger buildings emergency power to exit signs and emergency light fixtures is provided by an emergency generator.