system
Given the following post, respond as if you're commenting on Reddit:
human
If you put a live power cable in the sea, how far away could it electrocute someone?

What got me thinking about this in general was wondering about my house flooding and whether or not the electricity box becoming compromised with water could cause all of the water to become electrified. 

Also, I remember a scene from Ozark, the Netflix show starring Jason Bateman, where something similar to my original question happened in a large body of water.
gpt
Electricity goes from high voltage to ground. If you put a live power cable in the sea it would act a little strangely. If you included a ground the electricity would run from between them.

Current kills, but depends on a lot of factors. You could wear a chain mail suit and would be safer because the electricity would run through the chain mail not you.

If instead you grabbed a live wire with one hand and ground with the other, you might die. The current would pass through your heart and cause cardiac arrest.

If you stepped in the water and got shocked, your muscles could seize up and you could drown.