Is it logical that Enel's power is ineffective against Luffy? According to the One Piece wikia's Enel page, Enel's power won't work against Luffy because he is a rubber-man. But at some point, I'm confused from this fact since lighting that strikes at 1 Million Volts would burn anything, even rubber.
Also, he melted gold and placed on Luffy's hand.

So my question is, is there any logical reason why is it that Luffy doesn't feel any hurt when Enel strikes him?? I will not include what episodes this happen.
No, it isn't logical, but it was deliberate. TVTropes has a trope which perfectly summarizes this kind of phenomenon: "Acceptable Breaks from Reality". 


  A Willing Suspension of Disbelief is a must for almost any work of fiction. There are certain elements of story or gameplay where realism would simply make a work tedious, difficult, or confusing for the audience. Thus there are ways in which works will be blatantly, unabashedly unrealistic, and nobody really minds.


The manga deliberately takes liberties with certain inconvenient real-life physics rules for the sake of drama or balance; Most Logia Devil Fruits would have been way overpowered and/or impractical if the manga followed the laws of physics faithfully. Akainu's magma powers, for instance, would have made him unapproachable because his magma would have vaporized everything without even needing to make contact. For the same kind of reason, Luffy is completely immune to electricity; Enel would have won way too easily otherwise.