Electrician question: grounding a ballast for retrofit light installation

[Binare]

That's why you gotta scrape the powder coat off, just use a self tapping screw with a washer, wrap the ground from your supply around the screw under the washer and tighten it up. Ballasts normally are grounded to the case if its metal. Screw and washer would cec acceptable... But then again, the retrofit aint csa anyways, unless you spend 500 bucks on gettin your dyi light hood inspected and get a csa designation for it.