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What size battery cables should you use to run 3 meters between a 600 amp and Mercury 125 outboard motor?

The recommended battery cable size for a 3-meter run between a 600 amp and Mercury 125 outboard motor is 2/0 AWG (American Wire Gauge). This size cable is capable of handling the high current draw of the outboard motor and will minimize voltage drop over the length of the cable. It is important to use high-quality marine-grade battery cables that are resistant to corrosion and have properly crimped or soldered connections.