[time-nuts] Power connectors continued

Bob Bownes bownes at gmail.com
Thu Jun 22 22:12:33 UTC 2017


Keep in mind that there are a large variety of power pole connectors. I first encountered them in the cables and connectors used to recharge electric forklifts. Plenty big and can handle plenty of power.

> On Jun 22, 2017, at 16:06, Chris Albertson <albertson.chris at gmail.com> wrote:
> 
> I think they call these "16mm aviation plugs" in the CNC machine tool
> world.  They are common for connecting servo or stepper motors to their
> controllers.
> 
> they have any number of poles from 2 to 6 or more and screw rings that
> secure them.   Usually really good quality even from Chinese eBay vendors.
> But they are really used only for a cable to chassis and only up to a few
> amps.  here is one
> <http://www.ebay.com/itm/5pcs-Aviation-Plug-4-Pin-16mm-GX16-4-Metal-Male-Female-Panel-Connector-New/172271528592?_trksid=p2047675.c100009.m1982&_trkparms=aid%3D888007%26algo%3DDISC.MBE%26ao%3D1%26asc%3D44840%26meid%3D1f63ff61ed134f628c9629d26b2690b1%26pid%3D100009%26rk%3D1%26rkt%3D1%26sd%3D281469838889>
> 
> Why so many connecter types?   So you don't cross stuff up.
> 
> Power poles are great for low-tech 12 volt buss systems that don't need any
> kind of engineering and are tolerant of connecting "anything to anything."
> Amateur radios and lead acid batteries are OK.  Not good for high tech
> battery or their chargers or loads.
> 
> Th XT60 or if you need 90  amps, the XT90 is ok because it is gendered and
> you can't accidentally connect two sources.
> 
> The aviation type are perfect for cabling four or six lead motors.
> 
> I would not use 3-pin XLR for anything but audio.  Don't make it easy to
> connect line level audio to a battery.
> 
> A really dumb idea was this guy, I heard this story secondhand.  He used
> A/C extension cords for speaker cables because they work well for that
> purpose, but then someone plugged a speaker into a 120vac well outlet.   I
> assume it made a load 60 Hz tone for a few cycles.    Best to follow
> industry conventions because that is what people expect.
> 
> Even though it would work well electrically, no one uses a mini-USB jack
> for Ethernet and for good reason
> 
> 
> 
> On Thu, Jun 22, 2017 at 11:42 AM, Mark Spencer <mark at alignedsolutions.com>
> wrote:
>> Sorry if I have caused any un due confusion thru my perhaps incorrect use
> of the terms "cannon" and "XLR."
>> The green connector with 4 separate female contacts is what I perhaps in
> correctly referred to as a "cannon" connector.  The silver connector with 3
> separate female contacts was what I perhaps incorrectly referred to as a
> "XLR" connector.
>> 
>> Both were in use in my lab powering time nuts gear.
>> 
>> 
>> 
>> 
>> 
>> 
>> 
>> 
>> 
>> 
>> 
>> 
>> Mark Spencer
>> 
>> mark at alignedsolutions.com
>> 
>> 
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> 
> 
> -- 
> 
> Chris Albertson
> Redondo Beach, California
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