Compare the plug shapes, voltage and frequency in Peru and Saint Lucia, and find out which adapter you need before you travel.
Adapter required
Yes — coming from Peru, you will need a travel adapter for Saint Lucia. Peru uses Type A/Type B/Type C plugs, and Saint Lucia uses Type G, so the pin shapes will not fit any wall socket. The mains frequency is also different (60 Hz vs 50 Hz). This rarely matters for electronics but can affect motor-driven devices like clocks and shavers.
Frequency differs (60 Hz vs 50 Hz). Rarely an issue for most electronics, but can affect motor-driven devices like clocks and shavers.
Peru (home)
Saint Lucia (destination)
Electrical specifications in Saint Lucia
Voltage
Frequency
More about plugs in Saint Lucia
In Saint Lucia, the standard power plug is Type G. The country runs on 230 volts at 50 Hz. That means every wall socket in Saint Lucia is the same shape — Type G, and your plug needs to physically match the socket to fit.
Full Saint Lucia plug guide