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NEMA 6-20 from two NEMA 5-15 outlet on different phase for faster charging?

CandS

New Member
Dec 2, 2020
3
0
19711
Is that possible to connect a NEMA 6-20 socket to two NEMA 5-15 outlets on different phase (180 degrees) with some 14 AWG cables (Shown in the photo)? Is that 20 means 20 amp total (10 amp/phase) or 20 amp/phase?
pxl_20201203_024826485-jpg.613978
 

rhumbliner

Member
Sep 24, 2015
700
856
Las Vegas
Is that possible to connect a NEMA 6-20 socket to two NEMA 5-15 outlets on different phase (180 degrees) with some 14 AWG cables (Shown in the photo)? Is that 20 means 20 amp total (10 amp/phase) or 20 amp/phase?

This is wrong on so many levels. First, combining 2 out-of-phase NEMA 5-15’s will provide 15 amps at 240 volts, You double the voltage but you don’t increase the amperage. Second, the example you show is dangerous because as soon as you insert one plug, the other will become hot and therefore an electrocution hazard. Don’t do this.

The Quick220 is a good solution because it has a switch to prevent the electrocution hazard I just mentioned but it, too, must be used carefully. Do a search on this site for Quick220 and you’ll find discussions on the dangers of misusing the Quick220.
 

wws

Active Member
Aug 11, 2014
1,033
1,131
Northern California
That thing is a shock and fire hazard. Don't even think of using it.

The Quick220 is a somewhat better approach as it is properly wired and has relays for safety. But it won't work with GFCI receptacles. And it has other safety problems too.

Best is to hire an electrician to install a dedicated 240V circuit.
 
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brinox

Member
Apr 30, 2020
72
50
Lenexa
Seriously - please don't skimp on costs and/or the lack of level 2 charging capabilities with these kinds of "hacks". They're not within miles of electric code and can easily shock/kill you or someone else. Even worse, they could easily start a fire if something goes wrong in even the smallest of ways.

As already stated - hire an electrician! The amount of money spent for this particular purpose is pennies compared the costs of repairing damages when one of these ideas goes wrong.
 

ZippyDC

Member
Dec 2, 2019
37
21
Nevada
I have both 15 and 20 amps outlet in my garage. The difference between the 2 is 1 additional mile per hour charge. Not worth it.
 

MorrisonHiker

S 100D 2021.32.10
Mar 8, 2015
10,118
9,609
Colorado
I have both 15 and 20 amps outlet in my garage. The difference between the 2 is 1 additional mile per hour charge. Not worth it.
6-20 would be 240V and charge twice as fast as 5-20 at 120V (3.84 kW vs 1.92 kW). 6-20 would charge 2.67 times faster than a standard 5-15 120V (1.44 kW) outlet.
 

CandS

New Member
Dec 2, 2020
3
0
19711
Thank you guys, unfortunately, I am not able to hire an electrician due to the fact that my house is a rental and not able to open walls or drill holes.
 

MorrisonHiker

S 100D 2021.32.10
Mar 8, 2015
10,118
9,609
Colorado
Thank you guys, unfortunately, I am not able to hire an electrician due to the fact that my house is a rental and not able to open walls or drill holes.
Then you should take a look at the Quick 220 as mentioned earlier. Is a much safer option, even if it isn't perfect for everyone.
 

quadroplexor

Member
Jun 11, 2020
186
155
San Diego
Look for dryer outlets, these are normally 240v 30a and might work for you. Other option is to talk to the landlord about the installation they may allow it or even share the cost.
 

brkaus

Well-Known Member
Jul 8, 2014
8,020
6,506
Austin, TX
As stated above - 2 15a 120v outlets would combine to a 15a 240v outlet.

But, for everyones safety, if you must do it, use a quick220 device or get with the landlord about authorizing you to hire an electrician and modifying the property. if it is near the breaker box it might now cost much money.

If anyone (landlord, their designee, family, friend) pulled out one of the plugs in the self made rig and was electrocuted it would be much bigger problems financially and mentally.
 
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MattM24

Member
Jul 9, 2020
40
19
Mississauga, ON
If you have access to the panel and a dedicated 15A 120V circuit somewhere, you may be able to switch from 120v to 240v in the panel and switch to a nema 6-15. This would depend on local code, of course. You could put it back, when you move as well.
 

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