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Square d homeline 150 amp panel1/14/2024 ![]() ![]() 65A would be plenty 100A would be overkill 120A would be gross overkill. Have the new panel be for "anything/everything else". ![]() So, this suggests a simpler and cheaper plan: Leave the large 240V loads in the original 200A panel. (8 amps 120V).īut don't take my word on it, do a Load Calculation on the non-240V loads. Power companies' rule of thumb is the average house draws 1KW on average - really. Not at all, they're hardly ever loaded anywhere near that. If that makes no sense, it's because of the common belief that circuits each draw what the breaker handle says. The fact is, in any random home, if you subtract the large 240V loads - range, dryer, water heater, heat pump, hot tub and EV charger - everything else will fit very comfortably on a 65A panel. You don't need to bring over the full 200A. Since your service wires are allowed 4/0, feeder off that service need not be bigger than that, even if it supplies less than the entire dwelling. And then, 310.15(B)(7)(3), which says feeder never needs to be bigger than the service wires themselves, because that would be stupid. The reason for this is 310.15(B)(7)(1), which allows 4/0 for 200A service wiring due to a favorable derate. Panels don't need main breakers, though if they're in an outbuilding they need a disconnect switch, and choosing a main breaker panel is a cheap way to get a disconnect. a meter-main), you could simply "tee" off it with dual 4/0 to two main-lug panels. The 200A breaker alread present in the panel will suffice, and so you can use a subfeed lug kit as DrSparks advises.įor that matter, if the main breaker were out at the meter (e.g. ![]() Yes, and you don't even need another 200A breaker. Is feeding a 200A sub from a 200A main legit? Main Load Center is a Homeline HOMC30UC.Is 4/0-4/0-4/0-2/0 Aluminum SE-R sufficient? I've seen answers for similar scenarios suggesting 250 kcmil, but I don't know why.Can the 200-amp main feed the 200-amp subpanel and stay up to code? An electrician told me it can't.It's about 20' as a straight shot, but 40' if I go up into the attic and back down, because the main panel is on the opposite side of the garage as the basement wall. Install 200-amp main breaker load center in the basement.It's not ideal to have all the breakers in the master bedroom, we plan to replace the older wiring over time, and I'd love to upgrade to a plug-on neutral load center, so I'd like to install a new load center in the basement as a subpanel. We anticipate a number of projects on this house over the next couple of years, including converting the garage to a master suite. The 200-amp main panel is in the garage, on the same wall as the meter. It looks like it was upgraded at some point to 200-amp service, with a new load center, but most of the old 2-conductor (no ground) wiring remains. Learn More About Electrical Panels Here in our Buying Guide.I just bought an older house.3 ground bar mounting locations (left, right and end) let you pick the easiest spot to wire.Protection from damage or theft on the job site, interiors can be easily removed with a single captive screw.Slot/square drive screws let you use either standard flat blade screwdriver or square-head driver for positive drive and proper torque.Thermoplastic interior assembly is among the most rugged in the industry.Distributed split branch neutral with terminal screws backed out offering with up to 50% more terminals than UL requires increases wiring flexibility saving installation time and simplifies wiring.Designed with straight-in mains to save expensive cable and time.Automatic flush adjusting cover requires less time to complete the job.Rated 120/240 VAC and 22,000 AIR short circuit current rating.Overhead/underground feed simply by rotating the device before installing.Accommodates plug-on secondary surge arrestor (sold separately).Includes a combination flush/surface indoor cover.Ground and neutral bars accept up to (3) #10-14 equipment grounds.Each pole space accepts full-size, tandem or quad breakers.Includes a fully distributed neutral bar, allowing for the installation of Homeline plug-on neutral combination arc fault breakers on any space. ![]()
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