Quick Hits

QUICK HIT 10

Splices, Physical Protection & Mounting Service-Entrance Conductors

2026 NEC References: 230.46, 230.50, 230.51

🎯 What You'll Learn

Yes, service-entrance conductors can be spliced or tapped — but the equipment and installation have to meet the applicable requirements.

🔗 SPLICES & TAPS

Service-entrance conductors can be spliced or tapped under the applicable splicing requirements.

Power distribution blocks, pressure connectors, and splice/tap devices used on the service have to be properly marked for service-line-side use.

🛡️ PHYSICAL PROTECTION

Underground service-entrance conductors receive physical-damage protection under the applicable rules.

SE cable has specific protection requirements where exposed to damage.

Other exposed conductors and cables also have restrictions regarding locations where they're subject to physical damage.

📏 SUPPORT

SE cable needs support:

Within 12 inches of every service head, gooseneck, or connection

and then

At least every 30 inches

under the applicable requirements.

Other wiring methods have their own support and spacing requirements.

🧠 EXAM-STYLE QUESTION

How close to a service head must SE cable be supported?

Answer: Within 12 inches (300 mm).

📌 QUICK TAKEAWAY

Service conductors aren't just about ampacity.

Connections + protection + support + spacing are all part of the installation.

➡️ Next Quick Hit: Entering the building and the service head.

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