[GreenKeys] OT: Explosion-Proof phone on ebay...

[Jeffrey D Angus]

On 1/29/2015 1:14 AM, drlegendre . wrote:
>
> So in the case of the WE set on eBay, is this phone intended to prevent
> -or- withstand an explosion - or both?
Not so much to withstand an explosion, but to prevent one by creating
an exposed spark in an explosive atmosphere.

The primary concerns would be the rotary dial contacts and the cradle
(hook) switch, switching the 48 vdc (nominal) phone line voltage.




-- 
Jeff-1.0
wa6fwi
http://www.foxsmercantile.com