Larson 100' Temporary Tunnel String Light - 10 LED Work Lamps - 277V - 12/3 SJTW Cable - L7-20 Twist Lock

Larson ElectronicsSKU: PL3-WAL-STL-10-LED

Sale price$3,134.99


PuriLite suggests you place an order directly with us for large Larson orders due to the potential customization requirements. Please call us at 1-844-787-5483 to place your order. If you prefer to place your order online, a PuriLite agent will be in touch with you to discuss any custom options.
Made in the USA
The Larson Electronics WAL-STL-10-LED Temporary Tunnel LED Lighting String Light System is designed for high output illumination and daisy chain connections across a total length of 100` away from the power source. The 10 watt LED lamps on this this work site light set provide more and higher quality light than 100 wattage incandescent lights while creating less heat and using less power. This LED light stringer operates on 277V AC and provides operators with a temporary work light solution for tunnels and underpasses up to half a mile in length.
This temporary tunnel string light consists of 10 industrial grade LED lamps with 10` of 12/3 SJTW cable between each unit, stretching a total of 100` in length. This temporary LED string light is connected to a 277V power source via an integrated 5` line-in cable. Each globe light is equipped with a high output LED bulb which delivers more light output than a 100 watt incandescent. The 10 watt LED bulb draws 10% the electrical power of a standard 100 watt bulb, making it suitable for standard voltage and low voltage applications. Each LED light screws into a molded E26 lamp socket and the bulb is enclosed in a bird cage style plastic guard.
Ten high output A19 style LED lamps producing 1050 lumens per lamp provide a total of 10,500 lumens of bright white illumination. Each lamp housing is constructed from light weight aluminum, and fitted with an impact and shatter resistant polycarbonate diffuser. These LED light bulbs provide additional safety measures and time savings, given the low heat production and that it does not require replacing for 50,000 hours. Since the LED bulb uses solid state technology, the vibration (dropping, etc.) that degrades conventional incandescent bulbs is not an issue with these LED bulbs.
Each light has a plastic mesh guard enclosure that provides protection for the enclosed bulb and a hook eyelet that allows operators to hang these tasks lights overhead. Utilizing energy efficient LED lamps, operators are able to provide more light coverage from the same amp draw, or lower the amp draw using the same amount LED lamps as incandescent. Each LED trouble light has an effective range that approximately covers a 5-8` radius with 10-15 foot candles of light. Unlike fragile incandescent and compact fluorescent lamps that are made from glass, these LED bulbs are extremely durable and can live up to the abuse of harsh working conditions. With a lamp life of 50,000 hours, operators are not constantly having to replace burnt out or broken lamps, reducing down time and lowering the amount of spare lamps required at the job site.
Multiple stringer sections can daisy chained together via 5` whips terminated in twist lock connectors, with a maximum of twenty-five stringers daisy chained together. Alternating hots along between each daisy chained unit allows these string lights to be connected together, up to 25 units end to end spanning half a mile in length drawing less than 10 amps. Previously, it would have been unrealistic to have a complete assembly reaching 2500` in length from a single point of power.
Stringer Energy Consumption Comparison
Wattage (single unit)
100 watts
26 watts
10 watts
Wattage (total)
1,000 watts
260 watts
100 watts
Amp Draw @ 277V AC
3.61 amps
0.94 amps
0.36 amps
Lamp Life Expectancy
1,500 hours
8,000 hours
50,000 hours
Color Temperature
Operation cost per day
Operation cost per month
Operation cost per year
Unlike gas burning and arc type lamps that have glass bulbs, LEDs have no filaments or fragile housings to break during operation. Instead of heating a small filament or using a combination of gases to produce light, light emitting diodes (LEDs) use semi-conductive materials that illuminate when electric current applied and emitting light. With LED lights, there is no warm up time or cool down time before re-striking and provide instant illumination when powered on, adding to the reliability of LED technology. By nature, LED light sources run significantly cooler than traditional lamps, reducing the chance of accidental burns and increased temperatures due to heat emissions. This solid state design of light emitting diodes provides a more reliable, stable, durable, and energy efficient light source over traditional lighting.
The LED lamps from Larson Electronics` are designed for longevity and durability. Many manufacturers offer plastic heat sinks, which will cause the LEDs and drivers to fail prematurely. These LED lamps use high quality cast aluminum heat sinks that have been engineered to properly disperse heat buildup created by the LEDs. This design ensures the LED lamps will continue to operate well after the 50,000 rated lamp life.
Each high output LED lamp produces more light output than standard 100 watt rough serve lamps. The 3D polar distribution curve displays a standard 100 watt rough service incandescent lamp (red) in comparison to the LED-A19-10-E26-SML high output LED lamp (green) that is used in this work area string light. The LED lamp visible covers more than twice ground than the 100 watt rough service lamp, and the higher CRI of the LED lamp provides a better working environment. The cool white color temperature allows operators to see fine details that would not be clearly visible incandescent lighting.
These LED lamps are suitable for wet areas, extremely long lived, resistant to damage from impacts and vibrations, and consume far less energy than standard lamps.
This tunnel string light is configured to operate with 277 volt electrical current and is equipped with L7-20 male and female cord caps for twistlock connections. The LED lamps provide more and better quality illumination than 100 watt incandescent string lights without the high heat and fragile glass construction of traditional lamps. With the low energy requirements of LED lamps, half mile long assembly units are now physically possible.
Lamp Features
Superior LED Benefits
1. 10 Watt LED Lamps
1. 50,000 hour lifespan.

Lamp Type: LED
Lamp Quantity: 250
Lamp Watts: 10 watts
Total Watts: 2,500 Watts
Lumens: 10,500 (1050 per lamp)
Voltage: 277V AC
Amp Draw (Single Unit): 0.36
Amp Draw (10 Units @ Half Mile): 9.03
Total Length Per Unit: 250`
Wiring: 10` 12/3* SJTW Cable Per Unit, 5` Whips
Cord Cap: NEMA L7-20P* and L7-20C*
Mounting: Eyelet for hook mounting
Shipping Dimensions: 12" x 12" x 24"
Shipping Weight: 45 lbs

Shipping and delivery Information


American Express Apple Pay Diners Club Discover Google Pay Mastercard PayPal Shop Pay Visa

Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.

You may also like

Recently viewed