On 60A 2P&G, the outside pin in the pair is ground
On a 60A, the ground is the pin furthest away from the rest.
I believe 2P&G 20's, 60's and 100's are currently offered for sale as existing products from Rosco Labs.What a great question, of course if I were asking I would title this "How did the 2P get it's G"
How about the other flavors, 10Amp, 30Amp and 100Amp. I have no idea if the 10Amp was ever made with a ground.
Past one week. I waited even though my answer is hardly an expert one. It is reasonable to think that having the grounded conductor (neutral) close to the grounding conductor (ground) to better isolate the live conductor, but it's always seemed to me like these kind of connector differences are mostly arbitrary and done to prevent the matting of non-matched connectors.
I've never seen one. But then, I think I've only ever seen three 10A pin connectors in the forty years I;ve been in the business....I have no idea if the 10Amp was ever made with a ground.
On the 60 A connectors, when you consider the diameter of the contacts, along with their center to center spacing, there was insufficient space between the contacts to add a third in between and still have a structurally sound connector (Let alone placing the third contact slightly off center to provide polarizing). Inter-mating 2P 60A's with 2P&G 60's sure leads to some unusual looking matings. On the male connectors, the quick answer to which pin is ground is it's always the longest pin; not by much but it's always longer. I suspect the same creative rationale applies to the 100A connectors although I can't personally recall ever having a 2P 100A male in my hands.Since we're beyond the one week restriction:
The grounding pin on the 60A pin plug was a "modern" afterthought. Why bother with that pesky grounding pin on all the existing circuits and connectors? Simple solution: just add it on to the side of the connector, insuring backward compatibility with two-wire connectors. Plus, if you were not in the three-wire camp ("We don't need no stinkin' grounds!") look at all the phenolic material you saved on two-wire connectors!
This is a clear reason why the entertainment industry needed a standards organization long before they actually got one with ESTA!
ST
We use essential cookies to make this site work, and optional cookies to enhance your experience.