Ok -- My lawn mower has a lame kill switch that creates a ground to the chassis when the handle is released. I am on my third switch and I am sick of tearing it apart to replace it. I want to replace it with a toggle switch that will ground the spark to ground when I want to shut it off. I know the spark is high voltage. I am wondering what rating I should get the toggle switch so I don't fry it. I think the ground wire is about 16 guage, so I am assuming a 600V 10A switch should be plenty. Am I over or under estimating it? Thanks!