What does 22k AIC mean?

A breaker marked 22k AIC will protect anything it supplies so that the equipment never sees more than 22,000 amps of fault current. C: If a series rated combination is used it must be a tested combination identified by the manufacturer.

What is A high interrupting capacity breaker?

Interrupting Capacity (IC) is the maximum fault current that can be interrupted by a circuit breaker without failure of the circuit breaker. Carling Technologies’ circuit breaker product lines offer interrupting capacities that range from 500 to 50,000 amps.

What are the standard AIC ratings?

The general size and construction of the panelboard should be per the required load of the area plus at least 30% spare capacity (calculated). Minimum AIC ratings for the panel should be 10,000 AIC for 120/208 volt panels, and 14,000 AIC for 277/480 panelboards.

What is a 10 AIC breaker?

Ampere Interrupting Capacity (AIC) The term AIC applies to protective interrupting devices such as circuit breakers and fuses. For example, a device rated 10K AIC will interrupt current up to 10,000 Amps without shorting to ground or exposing live parts.

What does 10K AIC mean?

While KAIC might seem like the call letters of a radio station, it is actually an acronym used by electricians. KAIC in electricity stands for “Kilo Ampere Interrupting Capacity.” The ‘K’ stands for kilo, meaning thousand.

What is the AIC rating on a breaker?

AIC stands for Ampere Interrupting Capacity. The AIC rating indicates the maximum fault current (in amps) that an overcurrent protection device (circuit breaker, fuse, etc.) will safely clear when a fault is applied at the load side of the overcurrent protection device.

How do I lower my AIC rating?

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What is the interrupting rating on a breaker?

The interrupting rating is defined in the NEC as “the highest current at rated voltage that a device is identified to interrupt under standard test conditions.” A circuit breaker with a 200-ampere rating for example will not trip unless more than 200 amperes of current is drawn through the circuit breaker.

What does AIC rating stand for?

Ampere Interrupting Capacity
AIC stands for Ampere Interrupting Capacity. The AIC rating indicates the maximum fault current (in amps) that an overcurrent protection device (circuit breaker, fuse, etc.) will safely clear when a fault is applied at the load side of the overcurrent protection device.

What are Series rated breakers?

Series rated is a combination of circuit breakers or fuses and circuit breakers that can be applied at available short-circuit levels above the interrupting rating of the load side (protected) circuit breaker, but not above the interrupting rating of the main or line-side device.

Why are some circuit breakers rated at 22ka instead of 10ka?

The reason some breakers are rated at 22kA instead of 10kA is because they typically have far larger conductors hooked up to them, so with the lowered impedance on the circuit there is more of a chance for the breaker to experience a higher fault current at the breaker.

What is the definition of an AIC rating?

What Is the Definition of an AIC Rating? AIC is an abbreviation for Amps Interrupting Capacity, also known as Amps Interrupting Rating, which is the maximum number of surge amps that can be served to the equipment and still safely trip off when the amperage gets too high.

What does AIC stand for in circuit breakers?

AIC is an abbreviation for Amps Interrupting Capacity, also known as Amps Interrupting Rating, which is the maximum number of surge amps that can be served to the equipment and still safely trip off when the amperage gets too high. It can be found on panelboards, also called distribution boards or breaker panels, and panel circuit breakers.

When to use interrupting rating or interrupting rating?

Interrupting ratings, used for compliance with NEC® 110.9, apply solely to the overcurrent protective device. It is the characteristics of the overcurrent protective device (e.g. opening time, let-through energy) that need to be used in determining compliance with NEC® 110.10, not the interrupting rating.