Re: Limit To Add Breakers To Existing Panel
The limit will be listed on the label inside the breaker panel door.
It should show how many slots there are; there can usually be one breaker per slot. Double-pole breakers, used for 240V appliances such as ranges, dryers, and water heaters, take two slots.
There is an exception: if your panel allows it, you may be able to install "twin" or "duplex" breakers in a single slot.
In most cases a larger panel will be limited to 40 (or is it 42?) breakers total. For example, a 30-space panel will allow ten duplex breakers and 20 standard, for a total of 40 (or 30 standard).
The "Senior Member" designation under my name doesn't mean I know a lot, it just means I talk a lot.I've been a DIYer since I was 12 (thanks, Dad!). I have read several books on various home improvement topics. I do not have any current code books I can refer to. I was an apprentice plumber for two years.