2020年5月17日 · There are even dual-disconnect or tap-lug configurations that allow a single Class 200 meter and socket to serve 250A of load! Then we get to your case, which is a 400A service using a Class 320 meter and socket, used for any maximum (Article 220 computed) load between 225 and 400A.

2024年8月16日 · Class 320 aka 400A service is typically installed as dual 200A (48 kW) main panels, for cost reasons. If price is NOOOOOOOO object, 400A (96 kW) industrial panelboards can be obtained. This creates a huge complication with transfer switches, because most transfer switches and interlocks only switch 2 poles and not neutral.

2023年9月28日 · My question: What class 320, form 2S, 400amp (max) meter base will I need to support the lines I want to run? A "meter base" or "meter pan" is just a box for the meter. You go onward to a "main breaker" or a "main panel". In 400A service, you go onward to typically two 200A main breakers or panels.

2023年9月27日 · A class 320 meter is 320A continuous rated. i.e. 400A * 0.80 derate factor. It's normal, acceptable, and expected to run 2X 200A from that, as each should only be provisioned with 160A of calculated loads, since those are not continuous rating like the meter.

2023年7月27日 · Panels for bigger homes or homes with higher electrical loads are described as 320/400A. Why the "dual" designation? Which one is it, 320 or 400A that they support?

2022年3月18日 · I am installing a 320 amp service on my new house in Lewis County, Washington and am a little confused as far as how to split the service. I have my meter base set on a rack 200ft from the house because that is as far as PUD would go without adding a …

2022年2月26日 · The electrician is correct that the normal way to provision "Class 320" 400A service is to have the meter split to two 200A main panels. However, those meter pans accommodate two cables up to 300 kcmil each (to feed two panels NOT for paralleling), and that certainly will accommodate one 250 kcmil cable needed for a 225A service.

2021年8月30日 · Here is how a "Class 320" 400A ranch panel is laid out internally. The major features are: Meter; 200A breaker that goes straight to thru-lugs. The units are sold with this breaker location unpopulated, so different breakers can be fitted for 300 vs 400A service. 200A breaker that goes to:

2023年3月22日 · This is a typical "Class 320" 400A service panel, in "all-in-one" format. These panels typically have one 200A breaker feeding a built-in "subpanel" for branch circuit breakers -- and yours does exactly that. The bus rating of this internal "subpanel" is 200A and its breaker is 200A. This allows 40A solar.

2020年5月11日 · In my neck of the woods (Pacific NW) we call that a "class 320" service: A single meter feeding 2 main panels. Because both panels are considered main panels, neutral and ground need to be bonded together. In the meter panel, in most cases, the neutral is already bonded to the can just by how the lugs are attached.