The voltage selector switch gives you more usable power from the 120V outlets and added flexibility. It allows you to choose between using both 120 and 240 Volts, or 120 Volts only.
Selecting 120V only allows for the total generator output to be available through any of the 120 volt outlets. This enables you to power units with larger wattage requirements.
On a typical 120V / 240V generator, each of the 120V outlets gets only half of the generator’s capacity. For a 5000W generator, that would be only 2500W at any given 120V outlet. The full 5000W is only available at the 240V outlet. This limits the amount of 120V power you can use.
But with a Honda voltage selector switch, you can essentially turn off the 240V outlet. This means the full 5000 watts are available from the 120 V outlets, limited only by the capacity of the individual outlet.
The voltage selector switch gives you more power from the 120V outlets. And because most appliances are 120V, it means your Honda generator can power more.