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odd plug

odd plug

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this might be a medical plug for use in hospitals. ..its on a treadmill that a lady called me to look at yesterday. ..I told her they don't make adapters (haven't found one) to convert it to a normal 120V plug...I did offer to wire a standard plug or wall receptacle but she said no

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Filename:20120911_165516.jpg
Album name:Alights / General/ other
Keywords:Miscellaneous
File Size:95 KB
Date added:Sep 12, 2012
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arcblue
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Sep 12, 2012 at 10:47 PM Author: arcblue
Looks like a 5-20R for 20A outlets - while I've never seen such a plug on a treadmill, perhaps it is such a powerful one that it needs a dedicated 20 amp circuit. In fact, the only time I've seen such a plug is on an air conditioner. I have one outlet in my house with the proper receptacle for this, and it's wired off a 240v 40A circuit.

If it was the other way around - left prong vertical and the right one horizontal - it'd be a 220-240v plug, such as my OV-25 is wired to (240v ballast).

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Sep 12, 2012 at 11:27 PM Author: DetroitTwoStroke
This is a NEMA 5-20P designed to fit into NEMA 5-20R receptacles. These are made so that a device that draws more than 15 amps cannot be plugged into a 15 amp circuit possibly causing an overload. Note that a NEMA 5-20R receptacle will accept standard (5-15P) plugs as well as these (5-20P) plugs. Actually, most new commercial buildings in the U.S. are required to use 5-20R receptacles for all wall sockets. Here is a chart that shows plug configurations and their NEMA codes.

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Sep 13, 2012 at 12:10 AM Author: icefoglights
Outlets are easy to find too.

I've seen many 20 amp outlets, but I honestly haven't seen that many appliances that plug into them, though I'm surprised my air compressor isn't one of them. It doesn't use that much current to run, but starting the motor takes loads of amps. If it happens to be on a compression stroke when the motor tries to start, it usually trips the 20 amp breaker it's plugged into. Come to think of it, I think it was a 120v air conditioner that I saw that had this plug.

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Sep 13, 2012 at 11:34 AM Author: DieselNut
Definitely a common 20 amp plug. I have seen them on 120v air compressors, welders and air conditioners. It needs its own 20 amp circuit to be done properly.

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Sep 13, 2012 at 01:58 PM Author: funkybulb
I have one of those on my battery charger that put out 80 amps. but I used those 20 amp plugs and receptical to keep my 12 volt DC stuff seperate. but as I can plug in a Table lamp that have 12 volt ES bulbs in it.

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Sep 23, 2012 at 11:03 AM Author: Luminaire
it plugs into hybrid plug. Must be a commercial grade units meant for a membership gym.

You know the one that looks like this that you see all over in schools, hospitals and such? It accepts 15 and 20A plugs. The horizontal blade is designed to prevent it from hooking up into 15A circuit. Code only allows 80% except for portable devices (like hair dryer), so anything stationary and rated over 12A usually gets a 20A plug.
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Treadmills do use fairly beefy motor for some reason even though I don't see it doing much "work" like a conveyor belt.
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May 20, 2013 at 05:39 PM Author: RCM442
The freezer at my work has a plug like this..the compressor pulls a lot of amps on starting, and makes the light plugged into the outlet above it go dim until it's fully started. Trips the breaker if the power goes out and comes backnon quickly...too much pressure!

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Nov 01, 2013 at 05:38 PM Author: nicksfans
I think the only one of these I've seen was on a tissue culture (laminar flow) hood. The same hood also had an integrated 4 x 34/40 watt fluorescent light above the work surface. Bright!

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Nov 01, 2013 at 11:21 PM Author: Peach_Lover
Yep this is a 20A 120V plug. The audio amp racks as well as a portable dimmer pack at my church have this type of plug. It is indeed to prevent it from being plugged into a 15A circuit (hence why you can't find an adapter).
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May 16, 2018 at 09:19 AM Author: F96T12 DD VHO
My DJ mask looks like the outlet for that except with the ground upside down

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May 16, 2018 at 03:49 PM Author: Cole D.
I've seen these plugs on some commercial appliances that run on 120V but are meant to be on a dedicated 20A circuit.
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