220v Plug End Replacement for Equipment

Just FYI we got the "default" 200A service, even when the engineer from the power company recommended 300 or 400 amp (because of the woodshop).

200A service does NOT mean you can comfortably draw 200A!

Our "200 amp" service included a private transformer (long driveway) that was only rated at 40 amps continuous. Each time the central air kicked in, the 123 amp surge (30 amps after that) caused brownouts and eventually motor failure in the AC.

After replacing the AC unit and a number of tests and tweaks by the power company, they ended up replacing the 40A transformer with a 100A transformer - which is what they usually use for an entire neighborhood.

So, switching to 400A service means more than just needing 400A. It also means a bigger transformer, thicker wires, etc - all leading to cleaner power during surges, less brownouts, and less chance of burning out your motors.

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Posted 3 years ago by DJ Delorie in Woodworking Forum

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