Unverified90% confidenceDecision RuleTime unknown
储水式电热水器优先选带独立防电墙(Isolated Grounding)技术的机型,防电墙可在地线失效时通过增大水路电阻将漏电电流限制在人体安全范围(≤1mA),比单纯依赖漏电保护插头更可靠
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