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Current Limitation

Some of the scariest curves for me as a young engineer out of college were the let-thru curves published by fuse and circuit breaker...

When is overcurrent protection required for current-carrying conductors?

This article will explore the need for overcurrent protection for current-carrying tap conductors. CE Code Rule 14-100 requires overcurrent protection where a conductor receives...

Article 240, Part 2 — Overcurrent Protection

In Part One of Article 240, we left off with a basic review of circuit protection. Now that we have an understanding of how...

Article 240, Part 1 — Overcurrent Protection

Overcurrent protection is a subject on which we could write volumes; however, our objective here is to cover the basics in order to provide...

Overcurrent Protection, Part 2

Part I, which appeared in the March/April issue, provided readers with information about basic operation and basic time-current characteristics of branch-circuit, low-voltage fuses and...

Overcurrent Protection, Part 1

This article provides readers with essential information about basic operation and basic time-current characteristics of branch-circuit-rated, low-voltage fuses and circuit breakers. These overcurrent protective...

Circuit Overcurrent Protection

Overcurrent devices protect the circuit conductors and conductor insulation from overheating. They also limit the damage associated with overheating and faults in downstream equipment....

Wiring Methods and Overcurrent Protection

One of the most fundamental elements of an electrical installation is the connecting of the wiring method to an overcurrent device. Seems simple right?...

Overcurrent Protection and the NEC

The fundamental purpose of overcurrent protection is to protect conductors and equipment against the effects of excessive temperature on conductors and conductor insulation from...
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