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Convert old style 240 to twist style

Johnny A

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Joined
Oct 11, 2013
Messages
248
Location
mass
Need to get an adapter for NEMA 6-15p male to Female L14-20R

I was going to purchase one, but can make one for 25.00.

the questions are:

6-15 is a 3 wire
L14-20 is a 4 wire

how will this work......


Also, has anyone seen an appliance that uses a 6-15p?

Only in the 70's for a/c units??



link below for cord:mad::mad:






http://www.customavrack.com/products/990-nema-6-15p-plug-adapters.aspx
 

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Jester1

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May 2, 2014
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Montana
The pic on the left is still used for specific 240v equipment A/C, some lab equipment, doc office equipment and compressors. It has 2 hot wires and a ground. the new plug you are wanting is 2 hots, 1 neutral, and 1 ground. So what are the wires in the box, when was it installed and how far away is the panel?
 

G_P

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Jul 11, 2010
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7,135
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Central CT
Yeah if the new piece of equipment you need to plug in that has the L14-20R male on it needs a neutral you would have to run a new cable from the panel and install the correct outlet. The 3 wire outlets have no neutral.
 

Mustang51js

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Jan 24, 2014
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1,734
Location
Haskell nj
L6-20r receptacle is a three wire 220 volt plug,open the box and see if they happen to run a neutral and capped it off. Otherwise you can get the 6l-20r outlet with matching male plug
 
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Speedy Petey

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Apr 22, 2012
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1,430
Location
NY State
You CANNOT use an adapter to go from a 6-15P (240V) t0 a 14-20R (120/240V).
This would NOT be safe, legal or smart.
The site offering them is highly irresponsible.

Listen to GP and Mustang.
 
OP
J

Johnny A

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Joined
Oct 11, 2013
Messages
248
Location
mass
I failed to mention that this 6-15p (240v)is on a Coleman Generator. I wanted to convert to L14-20 to be more useful.

The generator cam factory with the 6-15p... It's a 1995 Generator that was used once. The elderly man drained it & put it back in the box & stored it in his hallway closet. The thing is mint... I just have no use for the 6-15p.. Unless I can convert it to a regular 20amp 120 v plug...


Thanks guys for the advice
 

G_P

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Joined
Jul 11, 2010
Messages
7,135
Location
Central CT
You can replace the 3 pin plug on the generator with the 4 pin but it still wont have a neutral.

If you do this be sure to prominently label it as "NO NEUTRAL" so that someone else does not try to use it in an application that requires 120 and 240v.
 

aandpdan

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Nov 12, 2009
Messages
849
Location
In between MA and PA
You can replace the 3 pin plug on the generator with the 4 pin but it still wont have a neutral.

If you do this be sure to prominently label it as "NO NEUTRAL" so that someone else does not try to use it in an application that requires 120 and 240v.

Actually, if it's like MOST small generators you can do it.

Look at the existing wiring for a neutral/ground bonding jumper. Somewhere, at one of the receptacles, there should be a jumper from the neutral terminal to the ground terminal. If you have it, just hook the neutrals and ground together.

It'll be a "bonded neutral" generator. If you need to have it "floating" so you can hook up to a transfer panel, it can likely be done but post some pictures or a schematic.
 
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