Quick answer
List every managed load with voltage, current, starting behavior, control method, and outage priority. Match each module to the generator, transfer switch, load type, current rating, and manufacturer control architecture. Document the shed and recovery sequence, then commission it under representative loads and verify what occupants should expect during an outage.
Load management controls when selected equipment can run
A standby system can make many circuits available while still having less generator capacity than the connected service. Load management monitors a control condition defined by the manufacturer and prevents selected large loads from operating together when that combination would overload the generator.
Depending on the product, the system may delay an air conditioner after transfer, interrupt a lower-priority 240V appliance, stage several loads, or restore them after generator conditions recover. The trigger, timing, number of priorities, communication method, and supported load types are product-specific.
Build the priority list from consequences, not appliance size alone
Identify essential health, safety, water, heat, refrigeration, communications, and property-protection loads first. Then list comfort and convenience loads that can wait. A well pump and septic pump may both be important, but the safe sequence can depend on storage capacity, duty cycle, controls, and whether occupants are present.
For each managed load, record voltage, phase, breaker, running amps or watts, starting demand, control voltage, cycle behavior, restart delay, and manufacturer restrictions. Record loads that must never be interrupted by a generic contactor or control module. Medical and process equipment require written continuity requirements.
| Load | Evidence to collect | Control question |
|---|---|---|
| Central air or heat pump | Running and starting current, controls, heat stages | Can the compressor be delayed or shed safely? |
| Electric water heater | Element rating, voltage, operating mode | Can recovery wait while motor loads run? |
| Well or septic pump | Motor and control data, storage capacity | How long can the load wait? |
| EV charging | Configured current, restart behavior | Should charging remain disabled during outage? |
Priority and recovery times are part of the operating design
Current manufacturer systems can assign several priority positions and stagger recovery so large loads do not return at the same instant. Treat those settings as controlled design data. Two modules accidentally assigned the same priority or a recovery order that restarts several motors together can undermine the intended capacity plan.
Document the normal source-loss sequence, generator warm-up, transfer, first permitted loads, delayed loads, overload response, shed order, recovery order, utility return, and cooldown. The written sequence should match the final settings and labels in the equipment.
A module cannot correct an undersized connection or fuel system
Load management can reduce simultaneous demand, but it cannot increase generator output, transfer-switch rating, conductors, breaker capacity, fuel pressure, propane vaporization, or allowable voltage drop. The generator must still start and run the highest-priority combination under the selected fuel and site conditions.
It also cannot resolve incompatible neutral treatment, grounding, phase, waveform, or equipment controls. A generator that cannot support the essential load set without repeatedly shedding critical equipment needs a revised load plan, more capacity, a different control strategy, or another source.
Commission every shed and recovery path
Use the manufacturer test procedure and qualified instruments. Confirm module addressing or priority, current rating, control behavior, contactor operation, transfer interaction, generator frequency and voltage, expected shed response, recovery delay, and appliance restart. Test faults and manual overrides only as the documentation permits.
Give occupants a one-page outage guide that identifies protected loads, managed loads, expected delays, loads that remain unavailable, alarm response, and who can change settings. Recommission after generator replacement, transfer-switch changes, HVAC replacement, water-heater changes, EV charger installation, or other major load work.
Frequently asked questions
Common questions
What does a generator load-management module do?
It delays, sheds, or restores selected loads according to a manufacturer-defined control strategy so simultaneous demand stays within the generator plan.
Does load management let a smaller generator power the whole house?
It can make more circuits available at different times, but it does not make every appliance available simultaneously. The essential combination, transfer system, fuel, and site conditions still have to fit the generator.
Which appliances should have the lowest priority?
That is site-specific. Large deferrable loads such as water heating, EV charging, dryers, or secondary HVAC are common candidates, but health, climate, water, sanitation, and equipment restart consequences must be reviewed.
Can I change the module priorities myself?
Use the exact product instructions and the commissioned load calculation. Priority changes can alter simultaneous demand and recovery behavior, so qualified review and retesting are appropriate.
Primary references
CordFind summarizes connector specifications and public safety guidance. Always follow the instructions supplied with your equipment.