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一.前言常有人对防火电缆与耐火电缆不能够正确区分,总认为防火电缆是耐高温电缆,而耐火电缆是防火电缆中耐火能力低的电缆,笔者认为,上述看法是不对的,防火电缆应该是一种范围比较大的称谓,耐火电缆应当是防火电缆的一个分支,防火电缆应当包括阻燃电缆,无卤低烟电缆及耐火电缆。按照耐火能力分,耐火电缆又分A类耐火试验电缆与B类耐火试验电缆。有的把通过A类试验耐火试验的电缆称为A类耐火电缆,通过B类耐火试验的电缆称
I. Foreword Often, fireproof cables and fireproof cables can not be properly distinguished, always think that fireproof cables are high temperature resistant cables, and fireproof cables are low fireproof cables in fireproof cables. In my opinion, the above view is wrong, and fireproof cables should Is a relatively large range of appellations, fire-resistant cables should be a branch of fire-resistant cables, fire-retardant cables should include fire-retardant cables, halogen-free low-smoke cables and fire-resistant cables. In accordance with the fire resistance points, fire-resistant cables are divided into Category A fire test cables and Class B fire test cables. Some of the cables that passed Type A test fire test are called Type A fire resistant cables and cables that pass Class B fire test are called