Leaving it alone was my first inclination. Especially since it's been
working for months.....recent events gave me doubts is all.
As always, I appreciate the input of this community.
By grounding at the supply, you would technically be creating a ground
loop. But this happens all the time when folks use positive grounded
power supplies on positive grounded loads. I don't think it would hurt
or help anything. It could make it obvious to some future technician
that this is a pos ground system. That could be a good thing.
Now, if you decided to power it with only one negative wire and trust
the building and tower grounds for the return.... things could get
dicey indeed.
-----Original Message----- From: [email protected]
Sent: Tuesday, June 21, 2016 12:14 PM
To: [email protected]
Subject: [AFMUG] -48v stupid question
My 48v power supply has floating ground on the DC side. It does have
a chassis ground, and the AC input has a ground.
So my DC side is -48 only by virtue of the equipment on the tower
having + grounded.
Should i go ahead and connect + to ground at the power supply? Seems
like that would make it official, but it's already working now.
Do i gain any safety or equipment protection by adding that ground
connection at the bottom? Would i add any danger or potential problems?
Sent from my iPhone
