Скачать или смотреть Junction Box Sizing for 3 x 2-Inch EMT Conduits (NEC 314 Pull Rules)

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What size junction box do you need for three 2-inch EMT conduits? Mis-sizing a box is a common code violation that can damage conductors during installation.

This video tackles a challenging, real-world calculation: "If I’m connecting 3 EMT conduits, each 2" in size, what size junction box is needed?"

NETA provides a detailed, NEC-backed answer, focusing on the rules for straight pulls and angle/U pulls (the minimum length of the box side when conductors enter the opposite wall).

Straight Pulls (NEC 314.28(A)(1)): Minimum of 8 inches (2 inches * 4).

Angle/U Pulls (NEC 314.28(A)(2)): Requires a minimum distance that is six times the trade size of the largest raceway, plus the diameter of all other raceways in the same row.

NETA cites the governing NEC sections, NEC 314.28(A)(1) and 314.28(A)(2), ensuring you select the correct box every time.

NETA is Free Forever, For Everyone! Start being productive with our lightning-fast solution, always backed by the NEC Handbook.

💡 NETA Key Features Demonstrated
📏 Box Sizing Calculation: Get definitive minimum dimensions for pull and junction boxes based on conduit size and number.

✅ Conduit Pull Rules: Clearly differentiate and apply the rules for straight pulls versus angle/U pulls (NEC 314.28).

📚 NEC References: Access critical sections covering pull and junction box sizing requirements.

✍️ Share Conversation: Easily send the sizing rules and reference link to your team or inspector.

⏱️ Job Site Efficiency: Eliminate guesswork and ensure proper box installation on the first attempt.

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App Store (iOS/Android): Search for "Ask NETA"

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