When a fire inspector walks a commercial building in Temecula or Murrieta, one of the first things they check is whether the emergency lighting comes on when the power is cut and whether every exit sign is lit, legible, and where it belongs. We are Lock and Alert Electrical, a licensed electrical contractor (CSLB #974530) serving businesses throughout Temecula, Murrieta, and the surrounding Southwest Riverside County area, and emergency lighting and exit sign work is one of the more misunderstood parts of commercial code compliance. Business owners often assume a few battery-backed light fixtures and a couple of illuminated exit signs near the front door satisfy the requirement. In practice, the code is more specific than that, and getting it wrong can mean a failed inspection, a red tag, or worse, occupants who cannot find their way out during an actual emergency.
This guide walks through what California building and fire code actually requires for emergency lighting and exit sign systems in commercial buildings, the equipment involved, how testing and inspection work, and what our process looks like when we design, install, or bring an existing system up to code for a business.
Why Emergency Lighting and Exit Signs Are Code-Required
Emergency lighting and exit sign requirements exist because people need to be able to find their way out of a building safely if the power fails, whether that is from a storm, an equipment fault, or an actual fire. Normal lighting cannot be relied on during an emergency because the same event that creates the danger often knocks out utility power at the same time. The California Building Code and California Fire Code, both of which are based on the International Building Code and NFPA 101 Life Safety Code, require means of egress illumination and exit signage in nearly every type of commercial occupancy, including offices, retail stores, restaurants, medical and dental offices, warehouses, and multi-tenant buildings.
These requirements are not optional add-ons that a business can skip if the budget is tight. They are enforced at the plan check stage for new construction and tenant improvements, and they are checked again during periodic fire inspections for existing businesses. A building that passed inspection five or ten years ago can still fall out of compliance if fixtures fail, batteries die, layouts change, or signage gets covered up during a remodel.
What the Code Actually Requires
Emergency lighting and exit sign requirements cover several distinct elements, and each one has its own standard.
Illumination levels. Code requires a minimum average illumination of one foot-candle along the path of egress, measured at the floor, with the illumination not dropping below a minimum point-to-point value along that path. This applies to corridors, stairwells, exit doors, and the exit discharge area outside the building, not just the interior of the occupied space.
Duration. Emergency lighting must operate automatically for a minimum of 90 minutes if normal power is interrupted. This is why battery backup units and centralized inverter systems are sized the way they are; a system that lights up for ten minutes and then fails does not meet code, even if it passes a quick visual check.
Exit sign visibility and illumination. Exit signs must be internally or externally illuminated, legible from the direction of approach, and positioned so that no point in the exit access is more than the maximum allowed viewing distance from a sign (this distance depends on the letter size and sign rating). Where the path to an exit is not immediately obvious, additional directional exit signs are required to point occupants the right way.
Placement and coverage. Every required exit door needs a sign, and signs are also required at any point along the egress path where the direction of travel to the nearest exit is not obvious, such as at a hallway intersection or a turn. Emergency lighting fixtures need to be placed so there are no unlit gaps in the path of egress, which often means more fixtures than a business initially assumes are necessary.
Power source. Systems can be powered by self-contained battery units built into each fixture, a central battery inverter system that feeds multiple fixtures from one location, or in some cases an emergency generator, but whichever approach is used, it has to be automatic. A system that requires someone to manually flip a switch during a power outage does not satisfy the code.
Common Types of Emergency Lighting and Exit Sign Equipment
Businesses in Temecula and Murrieta typically use one of a few approaches, and the right one depends on the size and layout of the space.
- Combination exit sign and emergency light units mount over a doorway and combine an illuminated exit sign with two adjustable emergency light heads, which is a common and cost-effective solution for smaller retail spaces and offices.
- Standalone LED exit signs are used where directional signage is needed but emergency lighting for that specific area is already covered by a separate fixture.
- Remote emergency light heads connect back to a central battery unit or a remote-capacity self-contained fixture, which lets us light up a stairwell or a long corridor without running a battery pack into every single fixture location.
- Central inverter systems are used in larger commercial and multi-tenant buildings, where a single battery inverter system powers standard light fixtures throughout the building during an outage, rather than relying on dozens of individual battery packs.
- Photoluminescent exit signage is an option in some occupancy types and does not require electrical power at all, though it has its own code requirements around charging light levels and is less common in typical office and retail buildouts.
LED exit signs have largely replaced older incandescent and fluorescent units because they draw far less power, which extends battery life and reduces how often the battery itself needs to be replaced.
How Often Emergency Lighting and Exit Signs Need to Be Tested
Code requires ongoing testing, not just a working system at the time of installation. A functional test of at least 30 seconds is required monthly to confirm that each emergency light and exit sign activates when normal power is interrupted, and a full annual test is required to confirm the system can operate for its full 90-minute duration under battery power. Many businesses are required to keep a written log of these tests for the fire marshal to review during an inspection.
In practice, a lot of businesses either are not aware of this testing requirement or fall behind on it once the initial excitement of a buildout or upgrade has passed. We work with property managers and business owners who want a straightforward way to stay current, whether that means we handle the annual testing directly or set up a system that makes the monthly self-test simple to perform and document.
Signs Your System Needs Attention
A few patterns come up again and again when we get called out to a commercial building for emergency lighting issues.
- A battery indicator light on an exit sign or emergency fixture is off, blinking, or showing a fault color instead of a steady charge indicator.
- An emergency light head does not come on when you press the test button, or it comes on dim and fades quickly.
- An exit sign has a burned-out lamp or a section of the letters that is no longer illuminated.
- A remodel, new partition wall, or rearranged layout has created a section of corridor or a new turn that is not covered by an existing sign or fixture.
- The building has never had a documented annual or monthly test, or the log has gaps going back further than a few months.
- An old fluorescent or incandescent exit sign is still in place and due for replacement with a more reliable LED unit.
- A tenant improvement or new suite buildout has no emergency lighting or exit signage at all yet, because it was overlooked during planning.
Any one of these is worth having looked at before it turns into a failed inspection or, worse, a life safety gap during an actual emergency.
What Our Emergency Lighting and Exit Sign Installation Process Looks Like
When a business in Temecula or Murrieta calls us about emergency lighting and exit signs, we typically start with a walkthrough of the space to map the path of egress, identify every required exit, and note any dead spots in coverage. From there we put together a layout that meets the required illumination levels and viewing distances, using a mix of combination units, remote heads, or a central inverter system depending on the size of the building and what is most practical to install given the existing electrical infrastructure.
For new construction and tenant improvements, we coordinate with the architect or general contractor and pull the required permits so the system is inspected and signed off as part of the overall project. For existing businesses bringing an older or incomplete system up to code, we handle the permitting directly with the city or county and schedule the work to minimize disruption to normal business hours. Once the system is installed, we test every fixture and sign under simulated power loss, confirm the 90-minute duration where required, and walk the business owner or property manager through how the monthly self-test works so ongoing compliance is simple going forward.
We also get called in after a failed fire inspection to correct specific deficiencies rather than redo an entire system, which is often the more cost-effective path when only a portion of a building is out of compliance.
Why Work With a Licensed Electrical Contractor
Emergency lighting and exit sign work sits at the intersection of the electrical code and the fire code, and both have to be satisfied for a system to pass inspection. We hold CSLB #974530 and carry insurance, and our licensed electricians are familiar with how Riverside County and the local jurisdictions that cover Temecula and Murrieta interpret and enforce these requirements during plan check and field inspection. Working with a licensed contractor also means the permitting, documentation, and testing sign-off are handled correctly the first time, which matters if the building is ever involved in an insurance claim or a liability question tied to a fire or evacuation.
If you would like to learn more about how we approach commercial electrical work generally, our commercial electrician page covers the range of services we provide to businesses, and our full electrical services page lists everything we handle for both commercial and residential clients.
Serving Temecula and Murrieta Businesses
We work with retail stores, restaurants, offices, medical and dental practices, and warehouses throughout Temecula and Murrieta to design, install, and maintain code-compliant emergency lighting and exit sign systems. Whether you are opening a new location, finishing a tenant improvement, or trying to close out deficiencies from a failed fire inspection, we can walk your space, tell you exactly what is required, and put together a plan that keeps your business compliant and your occupants safe.
You can learn more about our company on our homepage, or reach out through our contact page to schedule a walkthrough of your building’s emergency lighting and exit sign system.
Emergency Lighting and Exit Sign FAQs
Do all commercial buildings in Temecula and Murrieta need emergency lighting?
Yes, in almost every case. The California Building Code and Fire Code require means of egress illumination and exit signage for nearly all commercial occupancy types, including offices, retail, restaurants, and warehouses, regardless of building size in most situations.
How long does emergency lighting need to stay on during a power outage?
Code requires emergency lighting to operate automatically for a minimum of 90 minutes after normal power is lost. We size battery backup and inverter systems to meet this duration under full load, not just when the battery is brand new.
How often do we need to test our exit signs and emergency lights?
A functional test of at least 30 seconds is required monthly, and a full test of the entire 90-minute duration is required annually. Many jurisdictions also require a written log of these tests that can be reviewed during a fire inspection.
Who is responsible for testing emergency lighting, the business or the landlord?
This depends on the lease. In a single-tenant building the business owner is typically responsible, while in a multi-tenant building it is often the property manager or landlord, though the lease can assign this differently. We recommend confirming this in writing so testing does not fall through the cracks.
What happens if our emergency lighting fails a fire inspection?
The inspector will typically issue a notice of correction with a deadline to fix the deficiency, which can range from a burned-out lamp to missing coverage in a corridor. We can usually diagnose and correct these issues quickly since it is often a specific fixture or section of the building rather than the entire system.
Can we use battery-powered exit signs instead of hardwired ones?
Self-contained battery units are code-compliant and are actually the most common type we install, since each unit has its own battery and charging circuit built in. The key requirement is that the unit activates automatically on power loss and can maintain illumination for the required duration.
How many exit signs does our building need?
It depends on the layout. Every required exit door needs a sign, and additional directional signs are required anywhere along the path to an exit where the direction of travel is not obvious, such as at a hallway intersection. We map this out during a walkthrough rather than guessing at a fixed number.
Do LED exit signs need to be replaced as often as older fluorescent signs?
LED exit signs generally last longer and draw less power than older fluorescent or incandescent units, which also extends the life of the battery inside the unit. Most businesses that upgrade to LED signage see fewer nuisance failures and less frequent lamp replacement.
What is a central inverter system and when is it used?
A central inverter system uses one battery bank to power standard light fixtures throughout a building during an outage, instead of relying on individual battery packs in every fixture. It is typically used in larger commercial or multi-tenant buildings where it is more practical to centralize the backup power source.
Do we need emergency lighting in a stairwell if it already has windows?
Yes. Natural light from windows is not considered a reliable source of egress illumination because it depends on time of day and weather, and code requires stairwells along the path of egress to have code-compliant emergency lighting regardless of window placement.
Can we install emergency lighting ourselves to save money?
Emergency lighting and exit sign systems have to meet specific illumination, duration, and placement requirements, and the installation typically requires a permit and inspection sign-off. We handle the permitting and testing as part of the installation so the system is verified as compliant rather than assumed to be.
What should we do if a tenant improvement left our space without emergency lighting?
This is more common than most business owners expect, especially in older buildouts or spaces that changed use over time. We can walk the space, identify what is missing, and design a system that brings it up to current code requirements.
Does a small office with only a few employees still need exit signs?
In most cases, yes. The requirement is based on occupancy classification and exit configuration rather than employee count alone, so even a small office suite typically needs compliant exit signage and emergency lighting along its path of egress.
How much does it cost to bring emergency lighting up to code?
Cost depends on the size of the building, how much existing infrastructure can be reused, and how many fixtures and signs are needed to achieve full coverage. We walk the space first and provide a clear estimate based on what your specific building actually needs.
Do exit signs need to be illuminated 24 hours a day?
Yes, exit signs need to be continuously illuminated whenever the building is occupied, not just turned on during an emergency. This is separate from the emergency lighting function, which activates specifically when normal power is lost.
What is the difference between emergency lighting and egress lighting?
The terms are often used interchangeably, but egress lighting generally refers to the illumination of the path of travel to an exit, while emergency lighting is the broader term covering both that path illumination and the battery backup systems that keep it working during a power outage.
Can Lock and Alert Electrical handle both the installation and the ongoing annual testing?
Yes. We install and upgrade emergency lighting and exit sign systems for businesses throughout Temecula and Murrieta, and we can also handle annual testing and documentation so your building stays compliant year after year.
