How does an Element based Chakra release work Only a few specific people are able to release elements across their entire body to form Chakra modes of that nature. Examples being Raikage and Kakuzu. The 3rd and 4th Raikage were able to pass Lightning release accross their entire bodies while Kakuzu could do the same with earth style.

What i'm trying to understand is why the Lightning release that the 3rd and 4th Raikage used never seemed to affect or harm them in any way. I'm asking this because During Sasuke Vs Deidra, Sasuke did lightning release on his entire body and he took a lot of damage. But on the other hand the 4th and 5th Raikage's could do this without any problems or damage from coming in contact with the lightning.

Is there some kinda explanation as to why that is? I'm thinking that those 2 probably had a lot of Immunuty to lightning but nothing like that has ever been mentioned before.

PS: All forms of Kekkai Genkai and Jinchuuriki are excluded from this conversation
It's easy, the Raikages use the Lightning Release as a cloak to increase their physical prowess when using Taijutsu or using any movements.

While Sasuke uses Lightning Release technique like Chidori to attack himself to disintegrate C0 bomb that already inside his body. When using chidori, chidori's lightning only happen outside the body, not inside. In order to disintegrate C0 bomb, Sasuke must channel his chidori's lightning to all of his body including inside body. Even though Sasuke able to use Lightning cloak chakra mode, it also happens only outside the body, not inside. So Sasuke must attack himself with chidori to channel the lightning to all over his bodies.