If your circuit needs 100 amps of current the battery cable will be absorbing 2 amps 24 watts of current because of its resistance leaving 98 amps. Clean both battery posts with a wire brush.
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How to connect boat battery cables. I have done it backwards and never had a problem. Once the battery is disconnected gently lift it out of the battery box and place it out of the way. Remove the positive cable from the solenoid relay or starter. Technically with battery lugs the first crimp should be made at the end of the lug closest to the wire. The second crimp is then made closest to the hole. Lets say that your length of battery cable is connected to a 12 volt battery and has a voltage drop of 2 which is considered adequate for almost all electrical systems.
Connect the neutral black port of your house battery to the distribution panel on your boat. This is backwards from the way industrial compression lugs are crimped. Connect the circuit breaker to the power connection on the control switch and connect the power connection to the engine. Connect the positive cable to the solenoid relay or starter. At the source or battery you will read 12 volts using a voltage meter but at the other end of the cable your voltmeter will only read 1176 volts 12 volts 2. Disconnect the battery cables starting with the negative cable before disconnecting the positive cable from the battery.
Locate the battery within your boat and switch the marine battery switch to off while you remove the old battery. Disconnect the negative cable from the engine block. Shoreline marine presents captain weekend loye futch a 25 year veteran of the marine industry and professional boat mechanic who will show you how to properly connect wires to a marine battery.
Gallery of How To Connect Boat Battery Cables
