[KongchangAI]
Unverified83% confidenceDecision RuleTime unknown

长距离布线(如拖车照明、房车供电)需计算电压降,12V系统压降应控制在5%以内(约0.6V),线越长应选越粗的线径,10米以上供电线常需加大1-2个规格

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