Quick answer: You can wire a food truck's work lights to its 12V or 24V house battery so they run with the generator off. Over prep areas, the FDA Food Code requires shielded, coated or shatter-resistant bulbs. It also requires at least 540 lux (50 foot-candles) where staff work with food or knives. Choose fixtures with no exposed glass bulb, and confirm the installation with your health inspector.
It's 6 a.m. and you're prepping in a parking lot before the lunch rush. To get light over the cutting board, you have to fire up the generator. That means noise, fuel, and neighbors who complain. Then the health inspector walks up at your first event, looks at the bare glass bulb over the prep line, and writes it up.
Low-voltage LED light bars wired to the house battery can help with both problems. They run without the generator and have no exposed glass bulb. But no light is "compliant" on its own. Compliance depends on the fixture, where it's mounted, and whether it's bright enough and easy to clean.
Quick reference: FDA Food Code lighting levels
| Location or activity | Food Code minimum | Where it's measured |
|---|---|---|
| Surfaces where staff work with food, or with knives, slicers, grinders or saws | 540 lux (50 fc) | At the work surface |
| Handwashing, warewashing, equipment and utensil storage, toilet rooms | 215 lux (20 fc) | 30 in. (75 cm) above the floor |
| Consumer self-service food surfaces and certain food displays | 215 lux (20 fc) | At the surface |
| Dry food storage and walk-in refrigeration (and other areas during cleaning) | 108 lux (10 fc) | 30 in. (75 cm) above the floor |
Source: FDA Food Code (2022), section 6-303.11. Service window note: if staff handle, cut or plate food at the window, that surface counts as a food work surface at 540 lux. Your state or county may use a different Food Code edition or add its own rules, and your health inspector has the final say.
Why run food truck lights on 12V or 24V instead of the generator?
- Lights run with the generator off, so you can prep, clean up and close down without generator noise or fuel burn.
- Lights can stay on during a generator outage, as long as the house battery has enough charge.
- No inverter needed. A 12V LED bar connects to the house battery through a fuse and a switch.
-
Low draw. A 4W bar pulls about 0.33A at 12V, and ten of them pull about 3.3A (see the battery table below).
What does the Food Code say about light fixtures in a food truck?
The FDA Food Code (2022) is the model most US state and local health departments base their rules on. Three sections matter for lighting:
- 6-202.11 (protective shielding): Light bulbs must be "shielded, coated, or otherwise shatter-resistant" in areas with exposed food, clean equipment, utensils and linens, or unwrapped single-service items. There is a narrow exception for areas used only to store food in unopened packages that broken glass can't damage.
- 6-201.17 (cleanability): Light fixtures attached to walls and ceilings must be "easily cleanable." Covers, mounting hardware and wiring shouldn't create gaps that trap grease or dirt.
- 6-303.11 (intensity): The lux levels in the table above.
A bare glass bulb over the prep line is the classic violation. A fixture without exposed glass removes that problem, but the inspector will still judge the whole installation: shielding, cleanability and brightness.
How many LED bars do you need over a prep counter?
This is a preliminary estimate only:
Lumens needed from fixtures ≈ target lux × counter area (m²) × 2
The "× 2" assumes roughly half the fixture light reaches the counter. That's a rough assumption. Mounting height, beam spread, shadows and dirt on the covers all change it.
Example: a 2 ft × 6 ft prep counter is about 1.1 m². At 540 lux, that's 540 × 1.1 × 2 ≈ 1,200 lumens from the fixtures above it. Divide by the lumen rating of the bar you choose for a starting count, then add or move bars as needed.
Verify with a dedicated lux meter, not a phone app, because phone readings can vary widely by device and app. Measure at every surface where food is handled, and use whatever measurement method your local health department accepts.
Which LED bar works for a food truck prep area?
For mounting under shelves, cabinets or the ceiling above the prep line, one battery-powered option is the 12-inch 12V/24V LED rigid light bar with an aluminum body:
- 4W per bar, or about 0.33A at 12V (0.17A at 24V).
- 8–30V constant-current driver, so the same bar runs on 12V and 24V systems.
- Aluminum body with a clear acrylic cover, with no glass bulb.
- Warm white or cool white.
Confirm its suitability for your specific installation (location, shielding, cleanability and brightness) with your health inspector before you buy in quantity. Do not mount it inside a commercial exhaust hood. Lighting inside hoods is covered by separate fire and equipment requirements.
Outfitting a fleet of trucks or building trailers? Ask about wholesale and bulk pricing.
How long will the lights run on the house battery?
Amp-hours used ≈ total watts × hours ÷ battery voltage
| Setup | Total power | 6-hour shift at 12V (est.) | 6-hour shift at 24V (est.) |
|---|---|---|---|
| 4 bars | 16W | ~8 Ah | ~4 Ah |
| 8 bars | 32W | ~16 Ah | ~8 Ah |
| 12 bars | 48W | ~24 Ah | ~12 Ah |
These are estimates at nominal voltage. Actual runtime depends on your battery's usable capacity, the other loads on the same battery, actual system voltage and low-voltage cutoff settings. Lead-acid batteries are commonly run to only about half of their rated amp-hours, and lithium (LiFePO4) batteries can use more. Follow your battery maker's guidance.
Wiring tips for 12V food truck lighting
- Fuse each lighting circuit at the battery or fuse block, and size the fuse to protect the wire.
- Use the correct wire gauge for the run length. Excessive voltage drop on long thin wires can cause poor operation or shutdown at the far end of the run.
- Put prep lights on their own switch, so you can light the prep line without running everything else.
- Keep wiring sealed, secured and cleanable, away from hot surfaces and out of grease paths.
- Measure with a lux meter at every food-handling surface after install.
FAQ
Can I use a 12V LED bulb in a regular socket over my food prep area? Only if the bulb is shielded, coated or shatter-resistant, as FDA Food Code section 6-202.11 requires in areas with exposed food. A glass bulb in an open socket usually doesn't qualify. Confirm your fixture choice with your inspector.
How bright do food truck prep lights need to be? Under the FDA Food Code (2022), at least 540 lux (50 foot-candles) at surfaces where employees work with food or with knives, slicers and similar equipment. Handwashing areas need at least 215 lux (20 fc), measured 30 inches above the floor. Your local health department may use a different edition.
Will 12V LED bars work on a 24V truck system? Bars with a wide-voltage (8–30V) driver, like the 12-inch rigid bar above, are rated for both 12V and 24V. Bars rated 12V only should not be connected to 24V.
Do I need to run my generator to power food truck lights? No. LED bars wired to the house battery run with the generator off. Size the battery for the total lighting load, other loads and shift length.
Can I mount LED light bars near the cook line? LEDs produce far less heat than halogen or incandescent bulbs, but don't mount bars inside an exhaust hood or directly over a fryer, flat-top or burner, and keep wiring away from heat and grease.
Warm white or cool white for a food truck? Many operators use cool white over prep areas and warm white at the customer side. Either can meet the Food Code, which measures brightness (lux), not color.
Related guides
- What Is a Wide-Voltage (8-30V) LED, and When Do You Need One?
- What Size Wiring Should I Use for My LED Lighting?
General information only, not legal or health-code advice. Food Code adoption and enforcement vary by state, county and city. Confirm lighting requirements with your local health department, match bar voltage to your system, and have electrical work checked by a qualified installer.