[mikethedruid]

That type of plug was used for years. It is perfectly safe if it is wired correctly. Be sure to use an underwriter's knot on the 2 internal wires to act as a strain relief. Make sure the conductors in each wire are well twisted together, and go under the screw in such a direction that they tighten under the screw as it is tightened, rather than get pushed backward. After wiring the plug, then put the fiber cover over it to cover the screws and wiring inside.