Read the manual thoroughly and understand all of the instructions, cautions, and warnings before using this equipment. If any section of the manual is not understood, contact your nearest authorized dealer, or contact Generac Customer Service at 1-888-436-3722 (1-888-GENERAC), or www.generac.com with any questions or concerns. 

Generac Load Manager

Generac's Load Manager is a patented technology that helps manage large electrical loads during generator start-up and recovery periods by "shedding" the connected loads in case of an overload. The Load Manager is a 240V, 50A, or 100A-rated coil that manages large electrical motor loads.

Environment 

This information applies to the following Generac energy management devices:

• Generac Load Managers

• Smart Management Modules (SMM)

IMPORTANT: Service type is single-phase only. Designed for 120/240V single-phase systems and not compatible with three-phase service.

Generac Load Manager vs. Smart Management Module (SMM)

The Load Manager is part of Generac's second-generation Energy Management technology line, replacing the previous version of load management devices known as smart management modules (SMM). The Load Manager is functionally the same as the SMM, albeit with improved quality. 

Load Managers vs Power Management Modules

Load managers and Power Management Modules are used to optimize backup power systems by strategically managing loads. This allows for a reduction in the minimum size of the generator for a more cost-effective installation. See this article to learn more about Power Management Modules: What is a Power Management Module (PMM)?

Unlike the PMM's that depend on another control device, the Load Managers are self-aware, operate independently, and are control wire-free making them easier and cheaper to install. The modules have an internal circuit board that monitors the frequency being produced by the generator. If the frequency drops below a certain threshold, it automatically turns the connected appliance off to prevent the generator from being overloaded. Systems can consist of up to 8 individual Load Managers. 
 

Priority dial

A priority dial on the Load Managers allows users to set a load priority from 1 to 8 or can be set to “lock out only” mode for loads that do not need to run during a power outage. If the Lockout Switch is set to "Lockout Load on Generator", the connected appliance will not get power from the generator. This setting is used as a permanent lockout that customers can control.
 

Test button

The test button simulates an overload condition and will disable the Load Manager for a specified time, whether on generator or utility power. An LED provides the module’s status.
 

Product resources

A copy of the 50 and 100-Amp Load Manager user manuals can be downloaded from their product pages  on Generac.com or by clicking here. See the spec sheet at this link.

DANGER

Electrocution. Turn utility and emergency power supplies to OFF before connecting power source and load lines. Failure to do so will results in death or serious injury.

The Generac Load Manager facts:

• Single-phase only (120/240V). Not for three-phase service.
• Designed to be used as a lock-out device to eliminate high demand, non-essential loads during times of high energy usage.
• Available in 50A or 100A options.
• Capable of managing up to 8 loads, with the ability to add up to 4 more loads using SACM loads.
• Installed inline on the existing appliance wiring, which simplifies the installation process.
• Self-aware, with a built-in circuit board that monitors the frequency
• Requires no control wires to connect the module to the transfer switch
• Enclosed in a NEMA 3R enclosure that offers protection against weather and other outdoor elements.

How does the Smart Management Module know when the generator is running?

• The Smart Management Module (SMM) automatically detects when your home is running on generator power by monitoring the electrical frequency (Hz) of the power it receives. 
• Utility power and generator power behave differently, especially under load.
• The SMM uses these frequency characteristics to recognize when the generator is supplying power.
• When generator power takes over during an outage, the SMM can then manage connected appliances as needed to help prevent generator overload and support reliable operation.