Grounded plugs add an extra layer of protection. Here's an example for you: You have an un grounded system on a metal shelf system and there's a chance you can electrify the shelving and ruin your day if you touch it because you become the ground. Also a grounded system can use power strips as they are grounded for protection as well. The bottom line is $10 extra is well worth the add protection.
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Originally Posted by Simplex
