Travel Adaptor for Guam
Power plugs and sockets (outlets) used in Guam are type A, with a standard single-phase voltage of 110 V at a frequency of 60 Hz (3, 4 of wires not including ground wire). Guam has also three-phase voltage of 190 V.
Recommended power plug adapters
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FAQ
What plug do they use in Guam?
In Guam, they use power plugs and sockets of type A.
What is the standard voltage in Guam?
In Guam, the standard voltage is 110 V at a frequency of 60 Hz.