QUOTE (ScottEK @ Feb 2 2006, 10:11 AM)

I was wondering about this also, I'm using a Cap and Coil style ballast. I was looking for somewhere to ground the transformer. I used a continuity tester and found that casing of the transformer doesn't even show continuity so what point would there be in grounding it?
It shouldn't show continuity with anything else. The point of grounding any electrical item is to provide a path for electricity to flow other than your body or some other unsuspecting innocent object

should some "hot" wire escape the confines of its insulation. If metal parts in your project are grounded and a hot wire contacts them a circuit breaker in your panel box will (well - should

) trip. If they're not grounded and there's no handy path to "ground" that item becomes a hazard for any unwary soul poking around inside the box. Know how some tools and appliances don't have a grounded cordset (three pronged)? They're commonly referred to as "double insulated". That means they have an amount of protection in the form of electrically insulating layers and smart design such that it's almost inconceivable that a user might get shocked due to something "coming loose" in the device. Your typical grounded tool (with three pronged cordset) has all electrically conductive parts connected to "ground". Make sense? The ballast doesn't "
have to be grounded" but it's good practice to do so.