Of it says 2030 in the part number, that means 20 spaces, 30 poles, so 10 of the spaces are able to accept tandems.īut there are versions of tandem breakers for the pre-1965 panels, called "Non-CTL" tandems, that plug in anywhere. A simple way to tell if you still can read the part number is if the number includes different values embedded in it, for example a panel that says "2020" or just "20" on it means it is good for 20 spaces and 20 poles, so ZERO tandems will be allowed. The label for the panel must tell you if it is CTL or not, and show you where in the panel you can install tandems, if any. So because of tandems, the post-CTL panels are made to "reject" tandems that do not have a special clip, limiting WHERE you can, or WHETHER you can, install them. That's because the rules changed in 1965, adding a requirement called "Circuit Total Limitation" or CTL, meaning the panel has to be designed such that you cannot exceed the number of pole spaces that the panel is designed for, something people were doing prior to 1965 and overloading panels, causing fires. Some panels allow them, but only in certain spots, some do not allow them at all. Suggesting the burning scrap wire to remove the insulation will result in a ban. Do not post encouraging or mocking suicide, mental illness, or drug use.Ħ. No illegal, unethical, or disturbing subject matter. Example: Blogs, articles, news sites, YouTube channels, items for sale, ect.ĥ. No incorrect, unsafe, or hazardous informationīlatant incorrect information or hazardous advice will result with a ban Adhere to the Reddiquette.ĭO NOT post any personal information of any kind. Civil disagreements can happen, but insults should not. No personal attacks on anyone at any timeīe polite and respectful in your exchanges. After a period of inactivity, this subreddit is under construction and will be available to the public shortly.
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