The ground is for your protection, not to make the light work. If one of the hot wires were to touch the frame of the light, you would get shocked if you were grounded and touched the light. Also, it gives the system a way for the breaker to trip in such an occasion.
On 6/11/2013 4:32 PM, Ed wrote:
All of the replys here were very much appreciated. Another question, I bought the following LED light and hooked it to the relay that turns on my 240V submersible well pump. The light has 3 wires, one is marked ground. I connected the other 2 wires to the 2 120V legs of the 240 and the light works perfectly, on whenever the pump is on. My question is-do I connect that third wire to the ground in the relay box? Or, do I leave it as is without that wire connected. There isn't any other option in the relay box that I can see. Thanks to all, Ed
http://www.ebay.com/itm/10-Watt-LED-light-Waterpoof-Outdoor-Security-Floodlight-Flood-Light-110V-85-264V-/330883117952?pt=LH_DefaultDomain_0&hash=item4d0a2bb380
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