12 V ground connection
I hope someone with more knowledge than I have can tell me how to determine if a 12 Amp ground connection is good. First of all I am assuming that the quality of a ground connection can be slightly o...
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One way to test your connection quality is to connect the load so it is drawing power. Then use your meter set to DC volts, about 20 volt range, measure the voltage across the battery (probably 12 volts), and the voltage across the load. If you get the full 12 V on the load, the wiring is perfect for this load. If the load gets only 6 V it means half the electrical energy is delivered to the load and half lost in the wiring.
Connect the meter across each part, say the negative battery post to the wire connected to it. If it says 1 volt, you have lost 1/12 th of your energy right there. Voltage (electric potential in units of volts) is the energy per unit of charge flowing. So doubling the current will double the voltage and the loss.
Connect the meter across each part, say the negative battery post to the wire connected to it. If it says 1 volt, you have lost 1/12 th of your energy right there. Voltage (electric potential in units of volts) is the energy per unit of charge flowing. So doubling the current will double the voltage and the loss.
