For commercial occupancies, receptacle outlets shall be calculated at not less than 180 volt-amperes, see 220.14(I). This means that you can install thirteen receptacles on a 20A/120V general-purpose circuit [20A x 120V/180VA]. There is no limit on the number of receptacles on a 15A/120V general-purpose circuit!
Note: This post is about the number of receptacle outlets on a 20A circuit, the rating of the receptacle 15/20A is irrelevant; 15A receptacles are permitted on either 15A or 20A circuits, see Table 210.21(B)(3).
As for me and my house, I will serve the Lord [Joshua 24:15].
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The NEC does not limit the number of lighting outlets or receptacle outlets on a 15 general-purpose lighting/receptacle branch circuit. However, per 210.11(A), "the minimum number of branch circuits shall be determined from the total calculated load and the size or rating of the circuits used." For example, a 2400 sq ft dwelling unit would require four (4) 15A, 120V circuits. Check out Example D1(a) in the NEC and the video for the details.
As for me and my house, I will serve the Lord [Joshua 24:15].
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Are you ready for the big game? Give us your pick and the final score.
Hope you have a great Super Bowl Sunday from everyone at Mike Holt Enterprises!🏈
I am an eight-time National Barefoot Champion and went 'Pro' in the Slalom event (at the age of 61) for the 2012 US National Barefoot Championships and the 2012 World Barefoot Championships. For my wife's health, I moved to New Mexico many years ago (stopped barefooting).
I just started spending the winters in Phoenix Arizona; I'm going to barefoot waterski again (continue with mountain biking). I'm at the tender age of 74; NOTHING slows me down from living my life to its fullest.
What about you?
As for me and my house, I will serve the Lord [Joshua 24:15].
Mike Holt's Electrical ToolBox. I created an amazing app for the electrician, inspector, instructor, contractor, and engineer. The app contains conductor sizing (including voltage drop limitations), circuit protection sizing, race sizing, equipment grounding conductor sizing for electric heating equipment (commercial and Residential), air-conditioning equipment, motors, Transformers (commercial), and dwelling-unit service calculations and sizing.
As for me and my house, I will serve the Lord [Joshua 24:15].
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Not as easy as it looks... Section 110.13(A) states that 'electrical equipment shall be firmly secured to the surface on which it is mounted.' This seems simple enough, but in reality, it can be challenging, since it's a judgment call. The only person that can answer that question is the AHJ based on 90.4 which requires the AHJ to interpret the rule. Please watch MikeHolt.com/AHJ for details.
As for me and my house, I will serve the Lord [Joshua 24:15].
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Ground-Fault Circuit-Interrupter Protection for Personnel, 2023 NEC [210.8]
The 2023 NEC introduces a notable change to include the use of acronyms for clarity and efficiency. For instance, a ground-fault circuit interrupter can now be referred to by its acronym, "GFCI". But did you know there are different types of GFCI devices? If you saw the term SPGFCI in the Code, would you know what type of device it refers to?
Dive deeper into how the acronym "GFCI" and its variations are used in the NEC by watching the video.
To follow along with this video, you can download the FREE PDF from our newsletter on this topic. Click the link below:
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According to 314.16(C)(2), conductors can be spliced in a conduit body if the conductor volume based on 314.16(B) does not exceed the volume marked on the conduit body.
Example 1: Three 12 AWG wires (six conductor ends) need a conduit body that has a volume of 15 cu in. (6 x 2.25 cu in.); which is a minimum 1 1/4" LB.
Example 2: Two 18 AWG wires (four conductor ends) need a conduit body that has a volume of 6 cu in. (4 x 1.5 cu in.); which is a minimum 3/4" LB.
As for me and my house, I will serve the Lord [Joshua 24:15].
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Today is my 50th year anniversary of providing training for the electrical industry. So what did I do to celebrate? I went to Lowes and Home Depot to get some electrical parts for more videos. The list includes duct seal, push-in connectors, wire nuts, receptacles, cover plates, cable ties, NM staples, boxes, LB, ground bars and other stuff.
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Thank you for allowing me to have a DREAM JOB for 50 years teaching the National Electrical Code. All because God has blessed me with an amazing electrical industry that has welcomed me.
I'm a high school dropout and Miami gang member, with God's grace, I've become the man who honors God in all that I do.
I'm on fire with what I do (work, biking, barefoot water skiing, husband, father, and grandfather) and working hard on the 2026 NEC Changes book for the NFPA.
As for me and my house, I will serve the Lord [Joshua 24:15].
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