Quick Hits

QUICK HIT 12

Service Equipment — Enclosures, Barriers, Marking & Surge Protection

2026 NEC References: 230.62, 230.66, 230.67, 230.68

🎯 What You'll Learn

Now we're moving into the general requirements for service equipment itself.

🛡️ ENCLOSURES & BARRIERS

Energized service equipment parts must be enclosed against accidental contact or appropriately guarded under the applicable requirements.

Barriers help prevent accidental contact with energized ungrounded busbars and terminals during servicing.

🏷️ MARKING

Service equipment receives identification such as:

"Suitable for use as service equipment"

or

"Suitable ONLY for use as service equipment."

⚡ SURGE PROTECTION

Required service surge protection applies to specified occupancies, including certain dwelling-unit and sleeping-area applications.

The required SPD is:

Type 1 or Type 2

with a minimum nominal discharge current rating of:

10 kA

The requirement also applies in specified service-equipment replacement situations.

🧠 EXAM-STYLE QUESTION

What's the minimum nominal discharge current rating for a required service SPD?

Answer: 10 kA.

📌 QUICK TAKEAWAY

Service equipment isn't simply:

"The main panel."

Article 230 has requirements for its enclosure, barriers, markings, surge protection, and more.

➡️ Next Quick Hit: Service disconnects for dwellings.

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