You're right. The 2017 NEC doesn't explicitly mention warehouses in 210.8(B) for GFCI protection. Therefore, whether or not GFCI protection is required depends on the specific circumstances of the warehouse and how they align with the general requirements outlined in 210.8(B) and other relevant sections.Here's a breakdown of how to approach this: 210.8(B) General Requirements

This section outlines specific locations that always require GFCI protection for 125V, 15A and 20A receptacles. These locations are geared towards wet or damp environments, or locations where electrical shock hazards are more prevalent. Look at these sections in detail:

(1) Bathrooms

Unlikely applicable to a typical warehouse.

(2) Kitchens

This might be applicable if the warehouse has a break room or employee kitchen. Consider if the area has sinks, water, and food preparation areas.

(3) Garages, and also accessory buildings that have a floor located at or below grade level, not intended as habitable rooms and limited to storage areas, work areas, and areas of similar use

This is a key section. Warehouses can often function similarly to garages or storage areas. Consider if the specific warehouse area is primarily used for storage, work, or similar activities where tools or equipment might be used that could pose an electrical hazard.

(4) Outdoors

If any receptacles are located outdoors, they need GFCI protection.

(5) Crawl spaces - at or below grade level

If the warehouse has crawl spaces.

(6) Unfinished basements

If the warehouse has unfinished basements.

(7) Sinks - where receptacles are installed within 6ft of the outside edge of the sink

Consider any utility sinks or other sinks that may be present.

(8) Laundry areas

If the warehouse has laundry areas.

(9) Wet bar sinks - where receptacles are installed within 6ft of the outside edge of the sink

If there are wet bars.

(10) Locker rooms with associated showering facilities

If the warehouse has locker rooms with showers.

(11) Electrical vehicle supply equipment (EVSE)

Where applicable.

(12) Boathouses

Where applicable.

"Similar Areas"

This is where interpretation comes in. The phrase "similar areas" can be ambiguous. A good rule of thumb is to ask:

Is the area likely to be wet or damp? (e.g., areas where cleaning occurs frequently, areas exposed to the elements, areas near water sources). Is the area used for tasks that involve water or conductive materials? (e.g., cleaning, maintenance, repair). Is the area accessible to the general public or untrained personnel? (This increases the risk). Local Amendments

Always check with your local jurisdiction. They may have adopted amendments to the NEC that specifically address GFCI requirements in warehouses or similar commercial spaces.*

AHJ (Authority Having Jurisdiction)

Ultimately, the AHJ has the final say. If there is any doubt, it is always best to consult with them to determine whether GFCI protection is required in a specific warehouse location.

In summary:

Warehouses aren't explicitly listed, so you need to analyze the specific areas within the warehouse based on the general requirements of 210.8(B) and the potential for damp/wet conditions or increased electrical hazard. Pay particular attention to areas that resemble garages or storage areas, kitchens, laundry areas, and sinks. Always consult with your local AHJ to ensure compliance with their interpretation and any local amendments. Flag for review