06-16-2011, 06:19 AM
Safety caps are designed to fail open. Normal caps may fail open...or fail shorted. Here is where the safety factor comes in. If your cap shorts out, one side of the line is going to be connected to the chassis through the shorted cap, creating a dangerous situation. Now, if the cap fails open, that side of the line will still be isolated from ground because of the now-open cap.
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Ron Ramirez
Ferdinand IN