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Ground Fault Current: Essential Electrical Grounding Explained by Mike Holt
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Ground Fault Current: Essential Electrical Grounding Explained by Mike Holt
3.2K views8 months ago
YouTubeThe 360 Electrician
If you remember that the whole purpose of bonding is to establish an “effective ground-fault current path” in order to clear a fault, then you can better understand why proper bonding of raceways is crucial in maintaining a safe electrical installation… | Mike Holt Enterprises
7:00
If you remember that the whole purpose of bonding is to establish an “effective ground-fault current path” in order to clear a fault, then you can better understand why proper bonding of raceways is crucial in maintaining a safe electrical installation… | Mike Holt Enterprises
2.5K viewsApr 2, 2021
FacebookMike Holt Enterprises
Available Fault Current - The basics. One of the most ignored ratings in the electrical industry. When a system is operating completely normal- no worries. HOWEVER, in the event of a short circuit💥 A miscalculated or neglected fault current rating could mean that equipment is toast🤯. #fyp #electrician #sparky #teach#education #apprentice | Trusted Electric
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Available Fault Current - The basics. One of the most ignored ratings in the electrical industry. When a system is operating completely normal- no worries. HOWEVER, in the event of a short circuit💥 A miscalculated or neglected fault current rating could mean that equipment is toast🤯. #fyp #electrician #sparky #teach#education #apprentice | Trusted Electric
25.9K viewsSep 16, 2025
FacebookTrusted Electric
Understanding Ground Fault Current Path in Furnaces and Gas Piping
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Understanding Ground Fault Current Path in Furnaces and Gas Piping
12.8K viewsApr 8, 2024
YouTubeMikeHoltNEC
Calculating Fault Current using transformer impedance
17:22
Calculating Fault Current using transformer impedance
17K viewsDec 27, 2022
YouTubeINW Industrial Training
Grounding, Objectionable Current [250.6, 2020 NEC]
18:15
Grounding, Objectionable Current [250.6, 2020 NEC]
39K viewsJan 13, 2020
YouTubeMikeHoltNEC
Do you know the purpose of an equipment grounding conductor? The intent of the equipment grounding conductor (EGC) is to provide an effective ground-fault current path back to the source of the electrical circuit to trip the overcurrent protective device and clear a fault fast. This might surprise you, but there are fourteen permitted types of equipment grounding conductors listed in the NEC. Want to know what they are — and why they matter? Learn all you need to know about the purpose of equipm
23:34
Do you know the purpose of an equipment grounding conductor? The intent of the equipment grounding conductor (EGC) is to provide an effective ground-fault current path back to the source of the electrical circuit to trip the overcurrent protective device and clear a fault fast. This might surprise you, but there are fourteen permitted types of equipment grounding conductors listed in the NEC. Want to know what they are — and why they matter? Learn all you need to know about the purpose of equipm
16.2K views11 months ago
FacebookMike Holt Enterprises
1:14:21
Available Fault Current
598 viewsApr 1, 2025
YouTubeIAEI - The Electrical Enforcement Authority
14:23
Coordination, Overcurrent Protective Devices
16.3K viewsOct 13, 2023
YouTubeMikeHoltNEC
7:53
What Does Available Fault Current Mean?
48.7K viewsMar 2, 2022
YouTubeElectrician U
14:18
How do you determine the motor short-circuit, ground-fault, and overload protection, and conductor size? To find out, join Mike and his panel of Code experts who explain how to properly size motor overloads, short-circuit and ground-fault protection, and conductors. Visit MikeHolt.com/newsletters.php?action=display&letterID=2538 #NationalElectricalCode #NEC #NECRequirements #NECCode #MikeHolt #MikeHoltEnterprises #Electrician #ElectricalTrade #ElectricalContractor #JourneymanElectrician #Electri
1.4K viewsAug 5, 2022
FacebookMike Holt Enterprises
1:01
Fire Pump Circuit Sizing is Mind-Blowing! Short-Circuit/Ground-Fault Protection Size - Protection must have an ampere rating not less than the nameplate locked-rotor current of the fire pump motor (between 6 to 8 times motor FLC) [NEC695.4(B)(2)(1)]. Conductor Sizing - Conductors must have an ampacity of not less than 125 percent of the motor full-load current rating in accordance with 430.22 [NEC 695.6(B)(2)]. In this example, a 34A FLA/183A LRC fire pump motor requires 200A protection [240.6(A
40.3K views9 months ago
FacebookMike Holt Enterprises
0:57
Sizing conductors and short-circuit ground-fault protection for A/C equipment is Easy! All you need to do is follow the equipment nameplate! The nameplate short-circuit/ground-fault protection is sized to 225% of the load [440.22} and conductors are sized to 125% of load [440.32]. Understand that 240.4(G) overrides the limitations of 240.4(D) and that the A/C equipment has internal overload protection. Note 1: If the wiring method was NM Cable (Romex), then the conductors are sized to 60C column
75.9K views10 months ago
FacebookMike Holt Enterprises
2:56
What is a ground fault? What is a neutral? Does a ground fault really go to the earth? Join Mike as he explores the term ground fault and discusses what really happens when there is a fault… | Mike Holt Enterprises
2.2K viewsJul 23, 2021
FacebookMike Holt Enterprises
0:59
Motor Conductor and Short-Circuit Ground-Fault Protection Sizing. Conductors are sized at 125% of Motor FLC (Article Table), based on 75C column of Table 310.16 (all terminals are rated 75C), see NEC 110.14(C)(1)(a)(3) and 430.22(A) [22A x 125% = 28A]. Breaker used for short-circuit ground-fault protection sized to 250% of motor FLC, see NEC 430.52(C)(1)(a) [22A x 250% = 55A]. The limitation of 30A protection for 10 AWG does not apply to motor branch circuits, see NEC 240.4(D) and 240.4(G). As f
74.9K views9 months ago
FacebookMike Holt Enterprises
10:44
How Alternating Current is Produced 17.2
7.7K viewsJul 18, 2023
YouTubeMikeHoltNEC
23:41
Since their introduction in the 1970s, there is no question that ground-fault circuit interrupters (GFCI) have saved lives! Download a FREE PDF of this topic as you join Mike and the team explain the theory behind ground-fault circuit interrupters. Click the link below. đź”— www.MikeHolt.com/newsletters.php?action=display&letterID=2731 Want to learn more about this topic? Mike's Understanding Electrical Theory video program is a great tool to learn fundamental electrical principles. Click the link
793 viewsNov 16, 2023
FacebookMike Holt Enterprises
18:44
Industry Voltages
14.3K viewsAug 9, 2023
YouTubeMikeHoltNEC
7:00
Bonding, Metal Raceways [250.97, 2020 NEC]
26.6K viewsJan 13, 2020
YouTubeMikeHoltNEC
0:50
Math and History of Multi Wire Branch Circuits #electricalcode #nec
125.4K viewsMar 6, 2024
YouTubeMikeHoltNEC
4:43
Understanding Series-Parallel Circuits 16.2
7.2K viewsJun 6, 2023
YouTubeMikeHoltNEC
13:13
Ground-fault protection at docking facilities can be confusing if you don’t understand the purpose of the safety devices involved. NEC Section 555.35 outlines the requirements for both Ground-Fault Circuit Interrupters (GFCIs) and Ground-Fault Protection of Equipment (GFPE); applying these requirements correctly is key to keeping both people and property safe. GFCIs protect people from electric shock by detecting ground-fault current and shutting off power quickly and on the other hand, GFPE dev
2K viewsApr 18, 2025
FacebookMike Holt Enterprises
1:00
When more than three current-carrying conductors are bundled (not maintain spacing) for more than 24 inches, the ampacity of the conductors at 90C [110.15(A)] must be adjusted in accordance with Table 310.15(C)(1). For example, the adjusted ampacity of 12 AWG , where there is nine current-carrying conductors bundled for more than 24 inches is 21A (30A x 70%). (#electrican #electricalcontractor #mikeholt #sparkylife #electricalapprentice | Mike Holt Enterprises
70.4K viewsOct 3, 2024
FacebookMike Holt Enterprises
3:12
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
2.4K viewsJan 22, 2025
FacebookMike Holt Enterprises
17:47
AFCIs, Clearing Series and Parallel Arcing Fault
12.4K viewsFeb 12, 2024
YouTubeMikeHoltNEC
23:34
Types of Equipment Grounding Conductors, NEC 2023 - [250.118], (23min:15sec)
13.4K viewsSep 16, 2025
YouTubeMikeHoltNEC
3:01
Quick fault current calculation explained!
7.9K viewsJul 21, 2025
YouTubeDaily Amperes
1:02:11
Calculating Fault Current - Per Unit Method
4.4K viewsNov 22, 2022
YouTubeIAEI - The Electrical Enforcement Authority
0:59
Mike Holt's Electrical ToolBox; is an amazing app for the electrician, industry.
4.4K viewsFeb 3, 2025
YouTubeMikeHoltNEC
2:22:26
Fault Current Calculations - LAB
3.8K viewsFeb 18, 2021
YouTubeThomas Domitrovich
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