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-   -   3 blade 220v to 4 blade..Please help (http://www.diychatroom.com/f18/3-blade-220v-4-blade-please-help-171922/)

Cee1281 02-14-2013 12:46 PM

3 blade 220v to 4 blade..Please help
 
I hope I'm posting this in the right area.I appreciate any input as I have no knowledge in electrical.I have a concrete floor grinder that requires 220v to run.My plan was to hook it up to my 5500 watt generator in the 120/240v outlet.My dilemma is that the plug on the machine is a 3 blade and the the generator takes a 4 blade connector.Can I swap the plugs out ? If so what wires go where? thanks for any help...

kbsparky 02-14-2013 01:08 PM

Simply omit the neutral conductor on a new NEMA L14-30P cord cap.

Cee1281 02-14-2013 08:02 PM

Thanks for the reply, so just to make sure I understand..Im going to use the 3 wires off the 3 blade connector and connect them to the L14-30P cap,so ill have a ground wire and the other 2 wires connected to the new cap but not using the neutral at all? Does that make sense..

Lastly what blades does the wires hook up to on the new cap, I know one blade has a L shape to it...

thanks for your help

Kyle_in_rure 02-14-2013 08:41 PM

Lastly what blades does the wires hook up to on the new cap, I know one blade has a L shape to it...

thanks for your help[/QUOTE]

The L-shaped one is the ground connection, it should be a bare or green-colored wire.
The two prongs to the left and right of this are your two hot connections, the other two wires will connect to this. The prong across from the ground (L-shaped) prong would be the neutral, which you aren't using in this case. :thumbsup:

busman 02-15-2013 09:07 AM

Quote:

Originally Posted by Kyle_in_rure (Post 1117364)

The L-shaped one is the ground connection, it should be a bare or green-colored wire.
The two prongs to the left and right of this are your two hot connections, the other two wires will connect to this. The prong across from the ground (L-shaped) prong would be the neutral, which you aren't using in this case. :thumbsup:

You got that dead wrong.

Mark

Cee1281 02-15-2013 11:08 AM

Quote:

Originally Posted by busman (Post 1117572)
You got that dead wrong.

Mark

Can you please elaborate, just want to make sure I'm doing this correctly, I don't want to mess nothing up....


What's the correct way?

Kyle_in_rure 02-15-2013 11:48 AM

Quote:

Originally Posted by busman (Post 1117572)
You got that dead wrong.

Mark

Are you sure?
We are talking a bout a L14-30P, correct?
And since it's 240 volts, 3-wire, there's no neutral, it would be omitted, correct?

This is the plug we're talking about, correct?
http://www.bing.com/images/search?q=...electedIndex=5

Hope I'm not misreading....

rrolleston 02-15-2013 12:46 PM

With an L14-30 plug the two hots go on the brass screws and the ground goes to the green screw. Leave the silver neutral screw empty.

Cee1281 02-15-2013 01:06 PM

I bought a 4 blade plug and it has L14-30P on it, so I'm assuming that's what I need...

busman 02-15-2013 01:24 PM

The L shaped blade is the neutral.

Mark

busman 02-15-2013 01:33 PM

I'm sorry. The OP wasn't clear. Does the generator have a locking receptacle or not. My comment was directed at non-locking. I don't know that I would say the blade on a locking plug is exactly "L" shaped.

I missed the second OP post that specified locking.

Mark

rrolleston 02-15-2013 07:08 PM

Quote:

Originally Posted by busman (Post 1117720)
The L shaped blade is the neutral.

Mark

Where do you get your L14-30 plugs and receptacles. The L shaped blade is the ground.

TarheelTerp 02-15-2013 07:45 PM

1 Attachment(s)
Quote:

Originally Posted by busman (Post 1117720)
The L shaped blade is ______
Mark

sure?

Kyle_in_rure 02-15-2013 08:13 PM

Gotta love those twistlocks....:wallbash: :bangin:

busman 02-15-2013 09:03 PM

Quote:

Originally Posted by TarheelTerp (Post 1117896)
sure?

It doesn't look like an L to me.

Mark


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