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Message

Making power cables

2008-06-09 by Paul Schreiber

(resending, having some email issues)


 a) first you need the correct wire:

 http://stevenengineering.com/tech_support/PDFs/37PCBMTACN.pdf
 which for 18ga. is UL 1007.

b) MTA = Mass Termination Assembly = IDC = Insulation Displacement 
Connector.
That means: a special tool is needed to "cram" the *stranded*  wire into the 
connector so that little blades slice through the insulation
 and make contact with the wire. Same thing that ribbon cables do, but on a
 larger scale

 c) There is a low-cost AMP tool, Mouser (www.mouser.com) part #571-598041
 (for MTA-156) and also #571-598031 (for MTA-100). This is used to 'cram'
 the wire into the contact, assuming that the connector is somehow secured
 beforehand (I've use a PanaVise). These are $22.00ea. I use a pneumatic
 machine with a "feedthrough" tool that cost $430. But I've made over 8,000
 cables so big deal
>
 d) note that MTA-156 is designed for 18ga wire with PVC insulation rate
 300V or less (this is to control the thickness of the wire versus the
 thickness of the insulation).
>
e) also note there are "dust covers" that slide over the female IDC
 connectors. The Mouser part number for the 4-pin MTA-156 is a #571-6405514
 and these run $0.18ea.

> Paul S.
>

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