Altering Generator Transfer Switch Connections

The Importance of Properly Sizing a Generator and Transfer Switch: The amperage size of the plug has internal protection in place and changing sizes of any of these parts would greatly affect the integrity of the circuit design and could cause some potential damage. © By: Dave Rongey

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Understanding Generator and Transfer Switch Sizing
[ad#block]Electrical Question: I need to be able to plug my generator with a 3  prong locking 125/250v 30amp receptacle into my transfer switch which has a “4” prong locking 125/250 volt 50 amp plug.

• Is that possible or do I need to change the transfer switch plug? I can email pics of both if needed.

Thanks!
Background: Rob, a Homeowner from Lithia, Florida

Dave’s Reply:
Thanks for your electrical wiring question Rob.

The Importance of Properly Sizing a Generator and Transfer Switch

• You should not change the size of the transfer switch plug.
• You must understand that the amperage size of the plug has internal protection in place and changing sizes of any of these parts would greatly affect the integrity of the circuit design and could cause some potential damage.
• The transfer switch is sized based on the loads that it will be connected to.
• There is nothing mentioned here about the connected loads.
• The decision to alter any of this equipment without seeing the full design is not recommended.

The Following will assist you with your Generator and Transfer Switch

• The Importance of a Generator Transfer Switch
• Generator Transfer Switches
• Home Generator