![]() Get a subpanel that is large enough (in amps) to give you enough spaces to future-proof your house. What you want in the subpanel is enough spaces. Make sure to get pricing for the options I described above, and then decide how to proceed. My advice, would be to get quotes from a few local licensed electricians. There are a lot of subtle details that will likely be overlooked by a non-professional (and maybe even some "professionals"). This could require making junctions in the old panel, to extend the length of the circuit.Īll in all, I'd say this is not a project for a novice DIYer. Once you've got that worked out, you'll have to reroute all the selected circuits to the new panel location. To figure out what size feeder you'll want, you have to decide which circuits you'll move over to the new panel. This will dictate the wire size, and the size of the breaker supplying the new panel. If you do want to install a second panel, you'll have to determine what size feeder you want to supply it. Just make sure the new panel is larger enough for any future expansion. If you don't have/want to upgrade the service, you could still have a larger panel installed. If this is the case, you'll simply have a larger panel installed. It's possible that you may want to upgrade to a larger service, which will likely require new service conductors and a new service panel. If your panel is full, you'll likely want to have the service evaluated, to determine if it's still large enough to meet your needs. I believe this would be a better method and give you a better value added rather than several subfed panels. I would like to suggest that it may be a better idea to replace and upgrade the existing panel. It will have uses permitted with exceptions and uses not permitted and give installation rules you must follow depending on where these panels are and the type of environment they are in. As an example, let's say you want to use type NM (romex) to connect the new sub panel. So you need to select a method then follow the installation directions as outlined in that particular selection. ![]() You can use other methods other than conduit but first you need to select what type of method you prefer to use and that must be permitted as outlined in Chapter 300 of the NEC "Wiring Methods". It is not so much what the panel is rated as what the protection is rated. You can for example add a 60A breaker to your existing panel and protect the new subpanel with a 100A rating. First the panels you are looking at that are rated 100A simply means you can use them for any application up to 100A. Let me try and answer some of your questions. ![]()
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