This is a pretty ambitious project, please make sure you understand how to do it first, and be careful. Check with your local wiring inspector about the rules. If you don't have grounding rods installed already, you are going to need them for the new outdoor disconnect. Probably depends on the type of panel you have, there are several electricians on this forum who would know the details about how to do this.Ĥ. You may be able to install a new ground wire bus on the panel, and separate the neutrals by keeping them on the existing neutral bus.
You are correct in that the old panel will now be considered a subpanel, and will need to have the neutral wires separated from the ground wires. Your power company (POCO) has to upgrade the service from 100A to 200A, have you checked with them on what the requirements are? Where I live, they furnish the meter, you furnish the base, and only a licensed electrician can perform the upgrade to 200A outdoor service.ģ. If you do have to upgrade, that would require replacing all your house wiring with new cable with grounds.Ģ. Best check with your wiring inspector first. That may have been code in 1962, my house was wired in a similar way in 1959, but when you upgrade to 200A your local wiring inspector may insist that you upgrade your house to include grounding.
By your post, your house does not have an independent equipment ground. However, your upgrade is likely to create all sorts of issues you need to think through very carefully before you get started.ġ. I applaud your enthusiasm for taking on a major upgrade.
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