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I recently purchased a jet dust collector which is 230v motor 15amps. However, its plug is the regular 3 prong plug. In my garage, I have a separate 250v outlet with 20amps circuit breaker but it has the lockturn outlet. Is there a way to convert this 3 prong plug to the turnlock using an adapter? or should I cut the 3 prongs and install turnlock plug? Thank you enter image description here

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    Changing the plug is very safe since there is no way for it to have power when changing. Changing the outlet will keep everything looking neat, just make sure there is no power, turn off the breaker and double check at outlet before finding power with your fingers. Been there, done that(wrong breaker).
    – crip659
    Sep 25 at 19:44

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However, its plug is the regular 3 prong plug

Well, it's a regular NEMA 6-15 plug, which is a bit of an oddity. Here's the whole lineup.

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Notice that the 6-20 has a T-shape so it is downward compatible with the 6-15. (you probably know NEMA 5-20s do the same).

So you are perfectly welcome to replace that with a simplex (1-socket) or duplex NEMA 6-20.

You cannot install a simplex NEMA 6-15 for the reasons covered in this answer here. But a duplex 6-15 is fine.

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  • This is such a delightful corner case. The 'right' way to do this is to install a duplex 6-15, duplex 6-20, or simple 6-20. That meets code and works. But it would be just as safe to change out the plug on the dust collector for a twist-lock, even though it's not the 'right' way to do it. Lots of ways to properly solve this.
    – KMJ
    Sep 25 at 20:06
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    Hi Thank you. I found this plug, I assume this will work since its 20amps homedepot.com/p/…
    – Sam
    Sep 25 at 20:09
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    Check to make sure it actually has a UL marking and a real file number when it shows up. Amazon is known for listing a whole lot of garbage-tier junk, at least when it comes to electrical parts.
    – KMJ
    Sep 25 at 21:29
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    The claimed "E855464" UL file number appears to be faked. It does not show up in the UL Product iQ database. productiq.ulprospector.com/en/search?term=E855464
    – nobody
    Sep 25 at 23:06
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    @Sam -- please just don't bother ordering electrical stuff off Amazon (or eBay, or anywhere else connected to the Cheese pipeline for that matter)
    – ThreePhaseEel
    Sep 26 at 3:16

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