[Amps] Question about safety ground connection

[Will Matney]

Bill,

What I always did was either use a dedicated 3 wire 240 Vac plug, or used a 4 wire cord for a chassis ground. Welding machines use a 3 wire like the 200 amp buzz boxes, but for amps, if going to pick up 120 Vac too, I used a 4 wire cord. This being black, red, white, and green. Black, and red for 240, black to white 120, and green to chassis ground. I use 4 wire romex to run to the recepticle for 240 in the home, the same you use for a 4 way switched lamp setup in a hallway, etc. I mainly use the 4 wire so the white is never hot.

Best,

Will


*********** REPLY SEPARATOR  ***********

On 11/15/05 at 7:51 AM Bill Turner wrote:

>At 12:31 PM 11/14/2005, Jim Brown wrote:
>
>>Nothing as fundamental as this is going to change.
>
>~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>
>I'm not so sure. It has changed once that I know of when they went 
>from a three wire plug to four.
>
>After sifting and filtering all the responses, I believe the safest 
>and best way to wire a 240 volt circuit is to have the two hot wires 
>and a ground wire and not to use a neutral at all. In other words, 
>everything on the 240 volt circuit should be made to run from 240 
>volts, not 120  volts connected between a hot wire and neutral. If I 
>am mistaken on this, please comment.
>
>I try not to take anything for granted. :-)
>
>73, Bill W6WRT
>
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