RE: [CAD_CAM_EDM_DRO] Re: motor cables connection

With all that is said below being true, the NEMA 23 motors I have run
using Xylotex drives with a current of 2 amps or so work just fine on 22
ga wire with runs of 5 - 6 ft.

The Pac-Sci motor I have on a number of my machines all use an AMP
connector that is specified by Pac-Sci with IDC type connections
specifically for 22 ga wire. So I have used 22 ga from the drive to the
motor and it is working just fine.

Tim
[Denver, CO]
Sherline & Taig products at Deep Discount
Mach1 & DeskCNC with credit card ordering
www.KTMarketing.com/Sherline
e-mail me at Timg @ KTMarketing.com for items not yet listed

> -----Original Message-----
> Gerry:
>
> This is a fair question from a person without much hands-on
> electrical
> engineering experience. It DOES seem illogical, now, doesn't it!
>
> Steppers generally come with lead-wires of relatively short
> length and of
> gauge (diameter) such that the 4, 6, or 8 wires will "fit the
> hole" in the rubber
> grommet on the motor's housing. If these #22 wires are
> soldered directly to
> a connection from which the specified current is supposed to
> be available,
> that relatively short length of the smaller wires does not
> introduce enough
> resistance to be of much consequence.
>
> HOWEVER, if one wishes to extend the connection of even a #23
> motor four to 10 feet, the conductors used for this must be
> of sufficient size to preclude
> excessive current-loss due to lead-wire resistance. In other
> words, USE FATTER
> WIRES!
>
> Using JUST #22 wires to extend that 10" of #22 wires exiting
> the motor will
> result in SO much voltage/current loss that you
> almost-certainly will have
> difficulties with both the mechanics, and quite possibly the
> "electronics", as
> well.
>
> Just like using a 400' extension cord from a valid AC outlet around a
> construction-site to power a circular saw: If this 400' is
> only made of #18
> conductors, chances are the saw will hardly start! Those
> "big fat black cords" the
> construction boys use are often #14 or even #12! BIG stuff!
>
> A foot of #18 can handle 10 amperes OK in most cases. But
> make that 20 ft.
> long, and you will get SUCH a voltage-drop that #16 or even
> #14 might be
> indicated! Look at some "copper wire tables" for the "Ohms
> per Foot" and do the
> arithmetic youself for some imaginary examples. The numbers
> can be VERY
> informative! It is WORTH taking the time to DO that, if you
> never have!
>
> Jan Rowland
>
>
> [Non-text portions of this message have been removed]
>
>
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