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Generator Installation
On The North Fork

Top 3 Reasons to use Custom Lighting of Suffolk
To Install Your Generator

Expertise in Kohler Generators:

Custom Lighting of Suffolk (CLOS) stands out as the preferred choice for Kohler Generator installations due to our specialized expertise. Our team is well-versed in the intricacies of Kohler generators, ensuring precise and reliable installations tailored to meet your specific needs.

Licensed Master Electricians:

As a Master Electrical Contractor, CLOS brings a high level of professionalism and technical proficiency to every project. Our credentials ensure compliance with industry standards and regulations, providing you with peace of mind knowing that your Kohler Generator installation is in the hands of qualified experts.

Proven Track Record:

CLOS has a track record of successful installations in the North Fork, Riverhead, and Shelter Island, NY areas. Our satisfied clients attest to our commitment to quality workmanship and efficient service. Choosing CLOS for your Kohler Generator installation means entrusting your project to a reputable and experienced team dedicated to delivering excellence.

A time-lapse video of our team installing a 20,000 watt critical-load generator for a North Fork homeowner. Also, you might find owner Ben Dororski's post on generators helpful. It explains the state of the North Fork's fragile power grid and everything you need to know about backup generators on the North Fork.

"Do I need a Generator?"

Emergency Power During Outages:

A primary reason for having a generator is to ensure a reliable source of power during unexpected outages. Whether it's due to severe weather, utility issues, or other unforeseen circumstances, a generator can keep essential appliances, lights, and systems running, providing comfort and security for your home.

Backup Power for Critical Equipment:

In certain situations, having a generator is crucial for powering critical equipment such as medical devices, refrigeration, or heating and cooling systems. This is particularly important for individuals who depend on specific appliances or equipment for health reasons or other essential functions.

Maintaining Convenience at Second Homes:

For those with second homes on The North Fork, a generator becomes a valuable asset to maintain convenience and peace of mind. When you're away from your second residence, a power outage could lead to issues like frozen pipes, spoiled food, or security system failures. A generator ensures that essential systems continue to operate seamlessly, safeguarding your second home and its contents even in your absence.


20 kW Generator

20RCAL with Automatic Transfer Switch and OnCue Plus

  • Model Number 20RCAL

  • Fuel Type Natural Gas, LPG

  • Phase Single Phase or Three Phase

  • ATS Included

  • Remote Monitoring Included

Popular generators for backup power, with an automatic transfer switch included. When you lose power during an outage or storm, a hard-working 20 kW KOHLER® generator keeps your appliances working, the heat or AC running and your security system on.*

  • Reliable.

    Every KOHLER® generator is equipped with a heavy-duty, commercial-grade engine that stands up to extreme weather.

  • Powerful.

    In just 10 seconds, your KOHLER generator automatically restores power to a 5-ton (60,000 BTU) air conditioner, major appliances and electronics.*

  • Premium warranty.

    We've got you covered with 5-year, 2,000-hour protection, and a corrosion-proof enclosure that's built to last.

  • Award winner.

    KOHLER generators have received several awards, including the Most Valuable Product (MVP) Award 2010 by Building Products magazine.


  • PowerBoost™ technology provides power to start large loads such as central air conditioners without dropping power to other appliances

  • Extraordinary peak motor-starting capacity: 14RCAL at 33kVA at 240V and 20RCAL at 41kVA at 240V

  • Premium power quality delivers exceptional digital voltage and frequency regulation along with low levels of harmonic distortion to protect sophisticated electronics

  • Powered by reliable KOHLER Command PRO® engine, designed and tested for tough commercial applications; with hydraulic valve lifters to eliminate need for lengthy break-in periods and expensive valve adjustments; operation speed is 3600 rpm (the standard for air-cooled generators)

  • Compatible with OnCue® Plus and OnCue® Plus Wireless Generator Management Systems, and Programmable Interface Module (PIM)

  • Also compatible with Load Control Module (LCM) or Load Shed kit with single-phase generators only


  • Comes with either an RXT 100-amp indoor-rated automatic transfer switch with 16-circuit load center or an RXT 200-amp outdoor-rated service entrance rated automatic transfer switch with load shed kit

  • RDC2 controller designed for today's sophisticated electronics manages both the generator set and Model RXT transfer switch functions

  • Quiet, neighborhood-friendly operation with sound levels similar to a typical central air conditioner

  • Stylish corrosion-proof enclosure impact tested to -30°F

  • Runs on either natural gas or liquid propane (LPG) with simple switching between natural gas and LPG in the field

  • Streamlined installation, simple terminal block for easy field connections. Kohler also offers concrete mounting pads to lower installation costs and time.

*Based on generator and load size.

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