[GreenKeys] Not mine, but interesting perforator.

[w9ddd at tapr.org]

You've reminded me of a situation at a former employer.  They had used that 3 pin DC connector like our current U ground AC connector.  The electrical maintenance guys referred to it as a crowfoot. This was a facility that was built in 1908.  Even parts of the campus built in the fifties had these receptacles. The company stock room "sold" a lot of adapters between the newer grounding AC connector and the crowfoot.  I think the adapter was a standard Hubbell offering.  I wonder if they still list it.

I always wondered if this was used in other industrial facilities as an AC connector and if so why Teletype used it for DC.

John, W9DDD


> On May 17, 2020, at 12:51 PM, Jeffrey Angus <jdangus at att.net> wrote:
> 
>> On 5/17/20 12:24 PM, John, W9DDD wrote:
>> I wonder if the power supply was built-in or you still had to
>> have a big power supply to lug along.
> Looks like one of those three bent blade connectors on the cord.
> So I'm guessing it has to have an eternal supply. \'/
> 
> -- 
> "I am a river to my people."
> Jeff-1.0
> WA6FWI
> www.foxsmercantile.com
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