Quick Hits

EPISODE 9 — Number and Grouping of Disconnects for Occupant Access over 1kva (267.33, 267.34, 267.35)

Slide 1 — Hook "How many disconnects are allowed, how they need to be grouped, and making sure tenants can actually reach theirs."

Slide 2 — 267.33 Maximum number

• Each supply gets no more than SIX switches/breakers — whether mounted in a single enclosure, a group of separate enclosures, or switchgear. No more than 6 disconnects per supply grouped at any one location.

• Single-pole units (one per phase) are allowed but count together as ONE disconnect for this 6-max rule.

• NOT counted: disconnects used solely for ground-fault protection control circuits or power-operated disconnect control circuits, if part of listed equipment.

Slide 3 — 267.34 & 267.35

• 267.34(A): those 2-6 disconnects must be GROUPED, each marked for its load — except a fire-protection water pump disconnect, which can be remote from the group.

• 267.34(B): additional disconnects for fire pumps/emergency/standby systems must be installed sufficiently REMOTE from the normal group, to avoid losing normal and backup power simultaneously.

• 267.35: in multi-occupancy buildings, each occupant needs access to their own disconnect — UNLESS building management continuously supervises electrical service/maintenance, in which case access can be limited to authorized personnel.

Slide 4 — Quiz + CTA Q: "What's the maximum number of disconnects permitted per supply, grouped at one location, under 267.33?" A) 4 B) 6 C) 8 D) 10

✅ Answer: B — 267.33(A): no more than six.

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