I agree I used the wrong wording it could be overfilled but the potential for overloading by Harry home owner is there.
The potential to overload is always there. It depends on the loads, not the number of breakers.
I agree and even if the load exceeded the size of the feeder to the subpanel the OCPD ahead of the feeder would protect it.
Yes I understand load but when you give the opportunity to add more load by adding more circuits is a path to trouble and about 99% of home owner have no clue what they are doing.
I personally don’t care for Minnie breakers I think they are miss used more than not
Not allowed here because they are often used to overload a small panel.
Even when allowed by the manufacturer? And outlined on the label inside the panel?
For what its worth here is the label from the panel (full and closeup).
This is my first time seeing these mini breakers so this info is very helpful.
That’s a 12/24 panel meaning that it can accept 12 full size (12 circuits) or 12 twin (24 circuits) circuit breakers.
International Residential Code for One- and Two-Family Dwellings:
** E3601.7 Maximum number of disconnects. **
The service disconnecting means shall consist of not more than six switches or six circuit breakers mounted in a single enclosure or in a group of separate enclosures.
Thank you the 1224 in the cat # determines the type of breakers The 12 is for 12 full size breakers and the 24 is for 12 minnies for 24 circuits. If I am reading this correct.
Mini breakers are against code period for reason I stated. At least in Chicago .
Interesting.
Sounds bogus to me. What’s the difference between a listed single breaker or a tandem if the panel is designed for either?
That panel is not a service so that rule does not apply.
Looks like Homeline breakers in a Siemens panel.
Yeap, Square D Homeline
I’m curious. Can you provide a reference?
I agree. So does this answer the original post? Along with the information that it’s different if…
Chicago Fire way back (think the cow thing) … led Chicago to code requirements that are not done in other areas. I get questions frequently from transplants asking how come their romex is not in conduit, etc.
We then have to educate them on our code requirements.
Other than a professional doing load calculations before slopping in or squeezing in more branch circuits what are the odds a hacker will take time to do so.
On average most of us run into panels that are rated for 125 amps correct ?
So if a manufacturer makes panels with a set number of blanks it is pretty reasonable to assume they know it is because if more OCP devices are added it may overload the panel.
Heck if tandem minis are OK why not go even further and add quad mini breakers that are 1/4 sized .
Just trying to figure the logic here and you have every right to disagree but then I did not write the Chicago codes.