The Cable Wiyr looks like a electric cable commonly found on any streets. It's grip is made from silicon rubber, wrapped by vulcanized rubber as well.
The Cable Wiyr has a 3% factor of dealing additional Lightning-elemental damage with each hits. The maximum factor is 15%, so dealing 5 hits would be enough to charge the whip. Although, each factor only lasts 1 second, so attacking consecutively while holding it with a charge.
Simply performing a charge attack with Cable Wiyr will have a 8% factor of each 3% accumulation. Making the total chance for inflicting the additional Lightning damage is 8% minimum to 40% maximum chance. The Lightning damage critical chance is halved of the total Lightning damage chance, making it of 4% minimum to 20% maximum chance. For example:
If the wearer has dealt 5 consecutive hits and the Lightning damage factor is 15%, the Lightning damage Charge Attack chance will be 40%. So, the charged attack has a 40% chance to inflict the additional Lightning damage plus the Cable Wiyr's initial damage. There is still the 20% chance of the Lightning damage to be a critical hit.
Note that Cable Wiyr Lightning damage bonus factor, hit chance and critical chance does not stack with other factors.