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| Help running this 220v machine in my house |
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| james_s:
--- Quote from: Nusa on January 11, 2023, 06:20:30 am ---Existing installs are grandfathered (3-pin dryer plugs are common in older houses), but haven't been legal for new installs since the mid-90's. --- End quote --- But that's because dryers universally (or nearly so) have 120V loads that require a neutral. Can't you still have a 240V receptacle without neutral for something like an air compressor or welder that is purely 240V? The 240V EV chargers I wired up for a friend a few years ago didn't have a neutral, they came with 3 pin 30A plugs. |
| IanB:
--- Quote from: james_s on January 11, 2023, 06:25:50 am --- --- Quote from: Nusa on January 11, 2023, 06:20:30 am ---Existing installs are grandfathered (3-pin dryer plugs are common in older houses), but haven't been legal for new installs since the mid-90's. --- End quote --- But that's because dryers universally (or nearly so) have 120V loads that require a neutral. Can't you still have a 240V receptacle without neutral for something like an air compressor or welder that is purely 240V? The 240V EV chargers I wired up for a friend a few years ago didn't have a neutral, they came with 3 pin 30A plugs. --- End quote --- I have a NEMA 6-20 receptacle for my 240 V appliances. I can't think of a reason why that would be a problem for anything that doesn't require 120 V internally. |
| J-R:
It's just never going to be logical to call N.A. residential "single" phase, because you would need to differentiate between that and a 230V/240V single phase service with only a SINGLE hot, for example as found in some countries. However, "split-phase" seems like a reasonable compromise to both "parties" involved. I'm sure that is why it came into being. |
| Nusa:
--- Quote from: IanB on January 11, 2023, 06:49:08 am --- --- Quote from: james_s on January 11, 2023, 06:25:50 am --- --- Quote from: Nusa on January 11, 2023, 06:20:30 am ---Existing installs are grandfathered (3-pin dryer plugs are common in older houses), but haven't been legal for new installs since the mid-90's. --- End quote --- But that's because dryers universally (or nearly so) have 120V loads that require a neutral. Can't you still have a 240V receptacle without neutral for something like an air compressor or welder that is purely 240V? The 240V EV chargers I wired up for a friend a few years ago didn't have a neutral, they came with 3 pin 30A plugs. --- End quote --- I have a NEMA 6-20 receptacle for my 240 V appliances. I can't think of a reason why that would be a problem for anything that doesn't require 120 V internally. --- End quote --- It's not, since that's two hots and a ground. And I bet your dryer isn't one of those appliances. The now-banned dryer receptacles (NEMA 10-30) are two hots and a neutral -- the 3-wire dryer cord typically connects the neutral to the dryer chassis to double as a less-safe safety ground. In what is often a wet area. The lack of an independant earth ground is the issue. |
| administr4tor:
The seller has replied that the machine can work between 220v and 240V |
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