Re: [CAD_CAM_EDM_DRO] Reversing switch-

Roy J. Tellason wrote:

>On Wednesday 15 December 2004 06:21 pm, Michael Wood, Cincinnati wrote:
>
>
>>You want either a single throw double pole switch or a double throw
>>double pole double throw toggle switch (you just don't use one of the
>>poles)--
>>
>>
>This is incorrect. You cannot exchange _two_ wires with a single pole switch.
>
>
>>between $5 and $10. I think Loews has them in the electrical
>>section with the Gardner-Bender stuff. You could use a "3 way" light
>>switch, which does the same thing. Basically one position allows for a
>>straight through feed, while the other position crosses them.
>>
>>
>
>A "3-way" switch is just a single-pole, double-throw switch.
>[snip]
>

In fact, to expand on this - you can't even use a "4-way" switch. Those
swap two wires, but both wires are always connected. You could use one
of these to change direction only if you have a separate start/stop control.

- Steve