208/120V panel AIC rating

[anbm]

See attached pix of existing 208/120V panel, does anyone know why all breakers on left side are 65KA
while the one on right side are 10KA? This is 208/120V panel, I imagine panel AIC rating is 10KA or less.
Did they paint the breakers on left side with wrong KA value? Strange!!!

 

[electrofelon]

The panel itself doesnt have an AIC rating, it has a SCCR. I bet the SCCR is a lot higher than 10k. I cant speak for square D panelboards, but Siemens have a 200k SCCR. ITs pretty common for people to add regular 10k breakers later on, because they dont notice or just dont even know about AIC ratings.

 

[ron]

There are way too many contractors that do not appreciate the importance and code requirements of short circuit ratings that should.

That is probably why there is a mismatch.

 

[jap]

Very doubtful the labels are wrong.
Very doubtful someone added that many different breakers to only one side.
It doesn't look like that panel has been added to.

My guess would be that it came from the factory that way where they filled with what they had to get it out the door.

JAP>

 

[petersonra]

My guess would be they just used whatever they had available.

 

[anbm]

Turn out the panel directory noted this panel is series rated @ 65KAIC, there are no other labels for series breaker rating or testing.

 

[jap]

So what's the issue?

JAP>

 

[anbm]

So what's the issue?

JAP>

The issue is the panel and 10KA breakers have no labels that the breakers were tested for series rating, I guess? Thought this is required by NEC?

 

[electrofelon]

The issue is the panel and 10KA breakers have no labels that the breakers were tested for series rating, I guess? Thought this is required by NEC?

110.22(C)

But do you know that a series rating is being used?

 

[jap]

110.22(C)

But do you know that a series rating is being used?

Or what the series rating needs to be short of doing a Coordination Study?

JAP>

 

[jim dungar]

The issue is the panel and 10KA breakers have no labels that the breakers were tested for series rating, I guess? Thought this is required by NEC?

I thought the series rating information could be behind the equipment dead front and don't need to be readily visible

 

[electrofelon]

I thought the series rating information could be behind the equipment dead front and don't need to be readily visible

(C) Tested Series Combination Systems. Equipment encsures for circuit breakers or fuses applied in compliance with the series combination ratings marked on the equipment by the manufacturer in accordance with 240.86(B) shall be legibly marked in the field to indicate the equipment has been applied with a series combination rating. The marking shall meet the requirements in 110.21(B) and shall be readily visible and state the following: CAUTION — SERIES COMBINATION SYSTEM RATED ____ AMPERES. IDENTIFIED REPLACEMENT COMPONENTS REQUIRED

 

[jim dungar]

(C) Tested Series Combination Systems. Equipment encsures for circuit breakers or fuses applied in compliance with the series combination ratings marked on the equipment by the manufacturer in accordance with 240.86(B) shall be legibly marked in the field to indicate the equipment has been applied with a series combination rating. The marking shall meet the requirements in 110.21(B) and shall be readily visible and state the following: CAUTION — SERIES COMBINATION SYSTEM RATED ____ AMPERES. IDENTIFIED REPLACEMENT COMPONENTS REQUIRED

I see this a field installation requirement.

 

[electrofelon]

I see this a field installation requirement.

Ok yeah, I re-read post #8. I dont believe there is any requirement in the product standard or the NEC to mark the equipment with all of the possible tested combinations that could go in a panel.

 

[Tulsa Electrician]

Hard to read.
I think it says:
Assembled in MX with MX & foreign parts.

 

[anbm]

110.22(C)

But do you know that a series rating is being used?

See attached.

 

[electrofelon]

See attached.

I'm not sure I would trust that, just because there are so many people who don't know about or don't investigate available fault current, and it does not show the available fault current at that location and have the required labeling.