Quote:
Originally Posted by ROFL it's Waffle
 (<-- damn dude, smile a little) The aluminum stuff used to seal the seams on duct work is without question conductive. General purpose duct tape is not conductive, but it is also not insulated (doesn't protect against getting zapped). It's just not advisable to use because it offers minimal fire protection under a load.
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general purpose duct tape is in fact conductive. i made an amplifier very unhappy playing with some speakers trying to use duct tape to seal off the back side of the speakers(putting tape over/across the terminals), the speakers started audibly distorting from the short. i've also ran into it a few times in residential wiring, after it causes issues that no one else can figure out...
i'm talking about this stuff
put an ohm meter on the adhesive part of your roll