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QUICK HIT 06
QUICK HIT 06
Attachment Points, Service Masts & Roof Supports
Attachment Points, Service Masts & Roof Supports
2026 NEC References: 230.26, 230.27, 230.28, 230.29
🎯 What You'll Learn
🎯 What You'll Learn
Now we're getting to where the overhead service conductors actually attach to the building.
📍 POINT OF ATTACHMENT
📍 POINT OF ATTACHMENT
The attachment point must satisfy the applicable clearance requirements.
It also cannot be lower than:
10 ft above finished grade.
🔧 FITTINGS
🔧 FITTINGS
Multiconductor cable needs fittings identified for service use.
Open conductors require appropriate fittings or suitable noncombustible, nonabsorbent insulators securely mounted to the structure.
🏠 SERVICE MASTS
🏠 SERVICE MASTS
A service mast is there for the service conductors.
Other communication or utility conductors can't simply be attached to the mast.
The mast also needs enough strength — or appropriate bracing/guying — to withstand the mechanical forces involved.
🏗️ ROOF SUPPORTS
🏗️ ROOF SUPPORTS
Where service conductors cross over a roof, substantial support is required.
Where applicable, metal supports on a grounded system have bonding requirements.
🧠 EXAM-STYLE QUESTION
🧠 EXAM-STYLE QUESTION
What's the minimum height above grade for the point of attachment of overhead service conductors?
Answer: 10 ft (3.0 m).
📌 QUICK TAKEAWAY
📌 QUICK TAKEAWAY
The service drop doesn't just magically attach to the building.
Attachment point + fitting + mast/support + clearance all matter.
➡️ Next Quick Hit: Underground service conductors.
⚠️ Educational NoticeQuick Hits are educational explanations based on my understanding of the NEC. Always verify requirements in the current adopted NEC, applicable local amendments, manufacturer instructions, and with the AHJ.
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