Protection
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Part 8 – Sizing Motor Feeder Protection and OCPD’s Devices
How to Determine the Size of Feeder Protection Supplying Several Motors? In the previous section, we discussed sizing feeder conductors for multiple motors. This section will explain the step-by-step process…
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Part 7 – Sizing Motor Branch Circuit Protection and OCPDs
How to Select OCPDs and Right Size Breaker / Fuse for Motor Overcurrent Protection? Sizing Branch Circuit Protection for Motors The sizing of overcurrent protection devices (OCPDs) for motor branch-circuit…
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Part 6 – Sizing Motor Feeder Conductors and Cables
How to Determine the Correct Wire Size for Feeder Supplying Multiple Motors? In previous sections on motor circuit calculations, we determined conductor sizing, overcurrent protection, and overload protection with solved…
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Part 5 – Sizing Motor Branch Circuit Conductors and Cables
How to Determine the Correct Wire Size for Motor Branch Circuit? Sizing Motor Branch Circuit Conductors Sizing the conductors for motor branch circuit is selected at 125% of the motor…
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What is the Difference Between 15-Amp and 20-Amp Outlet?
Difference Between 15-Amp and 20-Amp Outlets and Receptacles Electrical wiring installations, equipment, devices, and other electrical systems for residential and commercial applications in the United States differ significantly in complexity…
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Why is the Long Prong Neutral Instead of the Narrow Prong?
Why is the Wide Prong and Slot Designated as Neutral Instead of the Narrow Prong and Slot in a Plug and Outlet? Engineers typically avoid making arbitrary choices when designing…
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Why is the Neutral Prong or Slot Wider on a Plug or Outlet?
Why is the Neutral Prong and Slot Longer than the Hot Prong and Slot on a Plug and Outlet or Receptacle? Although the electrical power supply and distribution system in…
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Why are there Grooved Slots in the Pins of Two Pin Plugs?
Why are the Pins are Slotted in the 2 or 3-Pin Plugs? Threaded slots are commonly found in Type A, Type B, Type C (Europlug), Type E/F, and Indian standard…
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How to Size a Branch Circuit Conductors with Protection?
Sizing of Branch Circuits and Conductors with Protection Supplying from OPCD to the Final Load Point Branch Circuit According to NEC 100 – Definitions, branch circuits are the circuit conductors…
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How to Size Feeder Conductors with Overcurrent Protection
Sizing of Feeder Conductors with Protection Supplying from Main Panel to the Subpanel or Branch Circuits Feeder Conductors According to NEC 100 – Definitions, feeders are all circuit conductors between…
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