Short answer: Outside the dwelling unit rules of 210.52, Article 210 requires receptacle outlets in a few specific places. Hotel and motel guest rooms follow the dwelling wall spacing count, but the receptacles may be placed for the furniture (NEC 210.60). A show window gets at least one receptacle outlet within 18 in. of its top, and no point along the top of the window is more than 6 ft from a receptacle outlet (NEC 210.62). Heating, air-conditioning and refrigeration equipment gets a 125 V, 15 or 20 A receptacle on the same level and within 25 ft, not on the load side of the equipment disconnect (NEC 210.63). A meeting room with a floor dimension of 12 ft or more and at least 215 square feet gets floor receptacle outlets, one for each 215 square feet or fraction of 215 (NEC 210.65).
PSI lists Branch Circuits and Conductors (10 scored NEC Knowledge and 4 scored Calculations questions) as a subject area of the Texas Journeyman exam. PSI does not name 210.62 to 210.65 or say how many questions cover required outlets. The Texas Journeyman Practice Pack has 1,000 original questions and 10 timed mock exams in the real two-part format, with step-by-step solutions for every calculation. Try free practice questions without signing up. Get the full pack for US$39 with one payment.
Tsai Electro is an independent learning site. Not affiliated with TDLR, PSI or NFPA. We explain the ideas in our own words and do not reproduce NEC text. Check every rule and table value in your own 2026 NEC, and follow your supervisor and the local inspector.
Where this fits
The NEC 210 branch circuits page covers the dwelling receptacle rules, like the 6 ft and 12 ft wall spacing and countertop outlets. This page covers the required outlets for commercial and lodging spaces, which questions often turn into a count: how many outlets for this window or this room.
210.60: guest rooms, guest suites and dormitories
- Count. The total number of receptacle outlets is at least what the dwelling wall spacing rule would require for the same room.
- Placement. The receptacles may be located where they are convenient for the permanent furniture layout, instead of following the wall spacing.
- Accessible. At least two receptacle outlets are readily accessible.
- Behind the bed. Receptacles behind a bed are placed so the bed cannot contact an attachment plug, or they have a guard.
- Permanent cooking provisions. Guest rooms or suites with permanent provisions for cooking follow all the applicable dwelling receptacle rules of 210.52. A wet bar by itself is not a permanent cooking provision.
210.62: show windows
- At least one 125 V, single-phase, 15 or 20 A receptacle outlet is installed within 18 in. of the top of each show window.
- No point along the top of the window is farther than 6 ft from a receptacle outlet.
Older editions counted one outlet per 12 linear ft or major fraction. That method was replaced by the 6 ft spacing rule in the 2023 edition, so old study guides can give a different count.
Quick count. Each outlet covers 6 ft on either side, 12 ft of window in all. Divide the window length by 12 and round any remainder up.
Worked example: a 30 ft storefront
- Coverage. One outlet covers up to 12 ft of window top (6 ft each way).
- Divide. 30 ÷ 12 = 2.5.
- Round up. Two outlets can cover at most 24 ft of window top under the 6 ft rule, which is not enough for 30 ft: 3 receptacle outlets.
- Layout check. Outlets at 5 ft, 15 ft and 25 ft from one end leave no point more than 5 ft from an outlet, all within 18 in. of the top.
The old “major fraction” method would have given only 2 here, because 6 ft is exactly half of 12 ft and not more than half.
210.63: receptacles for equipment servicing
Heating, air-conditioning and refrigeration equipment:
- A 125 V, single-phase, 15 or 20 A receptacle outlet at an accessible location.
- On the same level as the equipment and within 25 ft of it.
- Not connected to the load side of the equipment’s branch circuit disconnecting means, so turning off the unit does not kill the service receptacle.
- This applies to rooftop units and attic equipment as well. An exception covers evaporative coolers at one- and two-family dwellings.
Indoor electrical equipment:
- In other than dwelling units, a receptacle outlet is required in the same room or area as indoor service equipment, switchboards, switchgear, panelboards and motor control centers.
- It is not connected to the load side of that equipment’s disconnecting means.
- The section limits this to certain system voltages; check the exact condition in your code book.
210.65: meeting rooms
- Which rooms. Meeting rooms of not more than 1,000 square feet in other than dwelling units, such as conference rooms in offices and hotels.
- Wall outlets. The number is found with the dwelling wall space calculation of 210.52(A). The outlets may be placed where the design calls for them; the dwelling spacing layout does not have to be copied.
- Floor outlets. Where a meeting room has any floor dimension of 12 ft or more and a floor area of at least 215 square feet, at least one floor receptacle outlet, or floor outlet for a receptacle, is installed at least 6 ft from any fixed wall for each 215 square feet or fraction of 215 square feet of floor space.
Worked example: a 30 ft by 20 ft conference room
- Does the floor rule apply? One dimension is 30 ft (12 ft or more) and the area is 600 square feet (215 or more): yes.
- Divide. 600 ÷ 215 = 2.79.
- Round up. Any fraction of 215 square feet takes another outlet, so 2.79 becomes 3.
- Total. 3 floor receptacle outlets (or floor outlets to serve receptacles), each at least 6 ft from any fixed wall.
A smaller check: a 20 ft by 12 ft room is 240 square feet. 240 ÷ 215 = 1.12, which rounds up to 2 floor outlets.
Check yourself
- How close to the top of a show window must the outlet be? Within 18 in.
- How far apart along the top of a show window? No point more than 6 ft from an outlet.
- How far from HVAC equipment can the service receptacle be? Within 25 ft, on the same level.
- Can the HVAC service receptacle be fed from the load side of the unit’s disconnect? No.
- When does the meeting room floor outlet rule apply, and how many outlets? At least 215 square feet and one floor dimension of 12 ft or more; then one floor outlet for each 215 square feet or fraction of 215.
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Mark the count rules in one place
NFPA 70, National Electrical Code, 2026 Edition (softcover). Mark “6 ft window”, “25 ft HVAC” and “215 sq ft, round up” beside 210.62 to 210.65 before exam day, so you find the count rules fast in practice and on the exam. The Texas exam is open book. PSI allows a soft-bound NEC with highlighting, underlining and notes made in advance. Loose-leaf, spiral-bound and ring-bound copies are not allowed, and only permanent index tabs made or supplied by the NEC publisher are permitted; homemade and third-party tabs are not.
FAQ
How many receptacles does a show window need?
Enough that no point along the top of the window is more than 6 ft from an outlet, with each outlet within 18 in. of the top. A quick count is the window length divided by 12, rounded up.
How close must a receptacle be to rooftop HVAC equipment?
On the same level and within 25 ft, at an accessible location.
Can the HVAC service receptacle share the equipment disconnect?
It can be on a nearby circuit, but it may not be connected to the load side of the equipment’s disconnecting means.
When does a meeting room need floor receptacles?
When a meeting room of 1,000 square feet or less has a floor dimension of 12 ft or more and a floor area of at least 215 square feet. It gets one floor outlet for each 215 square feet or fraction of 215.
Do hotel guest rooms follow the dwelling spacing rule?
The count follows it, but the receptacles may be placed to suit the permanent furniture, with at least two readily accessible.
Sources checked October 2026
- PSI Candidate Information Bulletin, Texas electrician examinations (updated September 15, 2026): https://test-takers.psiexams.com/api/content/bulletin/1682
- NFPA 70, National Electrical Code, 2026 Edition, Article 210 Part III
