PE管は電気管として使用できますか?

2025-08-19

配管工学や電気設備の分野では、材料の正しい選択が非常に重要であり、それは工学の品質、使用の安全性、およびその後のメンテナンスに直接関係しています。PEパイプは、一般的なプラスチックパイプとして、優れた耐食性、柔軟性、経済性により、給排水、ガス輸送などの分野で広く使用されています。ADパイプのPEパイプ製品は、信頼性の高い品質で市場の認知を得ています。しかし、実際の運用では、PEパイプを電気パイプ(つまり、電線やケーブルを保護するために使用される電気パイプ)として使用できるかどうか疑問に思う人もいます。

この質問に答えるには、まずPEパイプと電気パイプのそれぞれの特性と用途を明確にする必要があります。PEチューブ、つまりポリエチレンチューブは、主成分がポリエチレン樹脂であり、優れた化学的安定性、耐低温性、および特定の機械的強度を備えており、水やガスなどの流体の輸送によく使用されます。電気管とは、通常、電線やケーブルの敷設保護に使用される特殊なパイプを指し、さまざまな材料があります。一般的なものには、PVC-U電気管、KBG管(亜鉛メッキ鋼管)、JDG管などがあります。これらの特殊な電気管は、設計時に電気設備の特別な要件を十分に考慮します。

安全性の観点から、PE管は電気管として直接使用することはお勧めできません。1つ目は耐熱性の問題です。電線は、特に負荷が大きい場合や短絡が発生した場合に、通電中に熱を発生させ、温度が大幅PEパイプには一定の耐熱範囲がありますが、特殊な電気パイプと比較して、その長期的な高温耐性にはまだギャップがあります(たとえば、一部のPVC-U電気パイプは優れた難燃性と耐熱性を備えており、金属電気パイプはさらに高温に耐性があります)。継続的な高温は、PEパイプの軟化、変形、さらには溶融につながる可能性があり、それによって内部ワイヤーの保護効果が失われ、大きな安全上の危険があります。

次に、難燃性があります。特に建築用電気で使用される特殊な電気パイプは、通常、難燃性を備えており、火災が発生したときの延焼を遅らせ、有毒煙の発生を減らすことができます。一方、通常のPEパイプには特別な難燃性要件がありません。直火に遭遇すると、燃焼して有害物質を放出する可能性があり、防火に役立ちません。

さらに、一部の電気管(金属管や重いPVC-U電気管など)は、より高い耐圧性と耐衝撃性を備えており、外部の機械的損傷からワイヤーをより適切に保護します。配線プロセス中、特殊な電気管の内壁は通常、より滑らかであるか、ワイヤーの敷設とチックを容易にし、ワイヤー絶縁層の摩耗を減らすために特定の構造で設計されています。

さらに、電気設置仕様にはこれに対する明確な要件があります。関連する電気設計および建設仕様では、電気システムの安全で信頼性の高い動作を確保するために、電気回路保護に使用されるパイプの種類と基準が指定されます。仕様に準拠していないパイプを使用すると、受け入れられないだけでなく、将来の使用に安全上の問題が生じる可能性があります。

もちろん、ある特定の、電気安全要求が高くなく、環境条件が非常に温和な非正規、臨時の場合、誰かがPE管を糸通し管として誤用する可能性がありますが、これは決して推奨されるやり方ではありません。

まとめると、PE管と電気管は異なる設計本来の目的と応用シーンを持っている。PE管は流体輸送に理想的な選択であり、電線・ケーブルの保護は厳格に国家基準を満たす専用の電気技師スリーブを選択しなければならない。西暦配管は専門の配管メーカーとして、電気据付規範に適合する電気技師スリーブ製品を提供して、異なる工事のニーズを満たす。電気の安全、工事の品質を確保し、関連規定に適合するために、PE管を勝手に電気管として使用しないで、具体的な電気設計要求に応じて、適切な専用電気技師管を選択する

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