I bought this surge protector because of the 20 amp rating. I have a plug in car and the charger disconnected while working at full power (about 12 amps). I bought it to see if line surges are causing the charging problem. The device has a special 20 amp plug with one leg rotated 90 degrees relative to the other. The problem was that I couldn't connect it directly because of the hinged cover on the socket (external type). Took me about $40 to make a matching short extension to fit them. As a result, it turned out that the problem was not overvoltage, but undervoltage due to the long line length. All this is not a device error, but note the special requirements for the 20 amp plug.
Allocacoc PowerCube ExtendedUSB, 4 Outlets, 2 USB Ports, 5 ft Cable, Mounting Dock, Surge Protection, Childproof Sockets, ETL Certified - Blue
12 Review
Southwire 34930 Surge Guard 30A: Full Protection Portable with LCD Display - Superior Safety in Sleek Black Design
12 Review
Power Strip Tower with 14 Outlets, 4 USB Slots, and 6ft Cord - Universal Charging Station by Lovin Product (1-Pack)
11 Review
Fellowes 10-Outlet Metal Split Surge Protector - 1,250 Joules, 6ft Cord in Black and Silver
12 Review
Extender Xiaomi Mi Power Strip 3, XMCXB01QM, 3 sockets, 10A / 2500 W white 1.8 m
26 Review
Toldear Multi Plug Outlet 💡 Extender with Rotating Plug - White
12 Review
Tripp Lite TLP1008TEL 10 Outlet Surge Protector Power Strip with 8ft Cord, Tel/DSL Protection, RJ11 and $150,000 Insurance - Silver
12 Review
Xiaomi Power Strip Surge Protector 3 Sockets 3 USB Black
26 Review