11-29-2007, 05:43 AM
Hey guys,
I'm a complete moron when it comes to wiring, but I am trying to learn. So, I thought someone here could help me. Here's the situation. I've built a metal rack with an electronic control system. I've grounded the power supply to a painted metal housing that sits on the rack. I occasionally get a little shock, but I've been having trouble telling if the rack (which is on rubber wheels) is picking up a charge somewhere, or if it's just static electricity.
So, my boss pulls out the ohmmeter and we go about trying to figure out if the rack is grounded. For the most part we had a resistance of 0, and somehow this means the ground is working. We tried with one wire on the rack and the other on copper pipe, and also between two different racks.
I really don't know what all of the means. You either get a resistance, or OL (overload?) or 0. Can someone explain this to mean? Is there any info out there for teaching a dummy like me the real world basics of wiring? I can find plenty of info on current and resistance, but I have problems translating that into real world situations.
Thanks,
Caroline
I'm a complete moron when it comes to wiring, but I am trying to learn. So, I thought someone here could help me. Here's the situation. I've built a metal rack with an electronic control system. I've grounded the power supply to a painted metal housing that sits on the rack. I occasionally get a little shock, but I've been having trouble telling if the rack (which is on rubber wheels) is picking up a charge somewhere, or if it's just static electricity.
So, my boss pulls out the ohmmeter and we go about trying to figure out if the rack is grounded. For the most part we had a resistance of 0, and somehow this means the ground is working. We tried with one wire on the rack and the other on copper pipe, and also between two different racks.
I really don't know what all of the means. You either get a resistance, or OL (overload?) or 0. Can someone explain this to mean? Is there any info out there for teaching a dummy like me the real world basics of wiring? I can find plenty of info on current and resistance, but I have problems translating that into real world situations.
Thanks,
Caroline