From a recent brand-“L” GFCI instruction leaflet…
Should you install it?
Make sure that you:
· Understand basic wiring principles and techniques
· Can interpret wiring diagrams
· Have circuit wiring experience
· Are prepared to take a few minutes to test your work, making sure that you have wired the GFCI receptacle correctly.
I can imagine the this text was carefully reviewed by a big-budget legal staff.
To what degree does this verbiage relieve the electrical manufacturer from liability?