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Review on πŸ”Œ APC P6WU2 Wall Outlet Plug Extender: Surge Protector with USB Ports, 6 AC Multi Plug Outlet, 1080 Joule Surge Protection - White by David Skyline

Revainrating 4 out of 5

It's not about Joule

With a name like Essential it doesn't promise much. Still, it's decent for the directly attached protection. I have four of these protecting inexpensive electronics. The direct-connect design with side vents is convenient for many applications, helps keep floors clutter-free, and doesn't require a large offset when used behind furniture. It also has a SurgeArrest feature that will disable the device if it gets compromised. The ratings on the back of my device are: Voltage protection class: LN: 400V, LG: 400V, NG: 400V. In=3KA. A protective voltage of 400V is normal, but an In value of 3kA indicates that the lifespan of this device is short. Given the low cost, this is not surprising.______________ For surge protective devices (SPDs), ANSI/UL 1449 3rd Edition requires the device to be marked with a Voltage Protection Class (VPR), a Discharge Current Class (In), and a few other values. . . APC, Tripp Lite, and others rarely disclose these values in their literature. Instead, all marketing refers to the Joule rating, which is not part of the UL standard. Standard VPR ratings include 330, 400, 500, ...; while default values for In include 3 kA, 5 kA, 10 kA, …. The lower the VPR the better, and the higher the In the better. The FAQ page of the NEMA Surge Protection Institute website (nemasurge.org) contains a summary of the SPD comparison: Industry standards (UL) and guidelines (IEEE) do not recommend a Joule comparison, instead focusing on the actual performance of SPDs with tests like this, as a test of the nominal discharge current, which together with the VPR test, checks the durability of the SPD. which reflects the transmitted voltage.

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