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No grounding on DAC and amp?

post #1 of 12
Thread Starter 

I wasn't sure the best place to post this, but I thought it would be okay here.

 

Over the Summer I will have no ground on my outlets. Should I not plug in my Schiit DAC and amp? I'd really like to be able to use them...

 

What are the risks?

post #2 of 12
Quote:
Originally Posted by qoouep View Post

I wasn't sure the best place to post this, but I thought it would be okay here.

 

Over the Summer I will have no ground on my outlets. Should I not plug in my Schiit DAC and amp? I'd really like to be able to use them...

 

What are the risks?

I had the same problem, no grounded plugs, I hired an electrician.

post #3 of 12
Thread Starter 

Maybe I'll just go without for the Summer. I'll only be here till September. Hopefully my place next year will have the ground. I'm studying abroad in Japan next year.

post #4 of 12
Technically speaking (And this does not mean "I am advocating this") you could use cheater plugs (and if you've ever read the install directions for these, they do request you to anchor them to a ground somewhere), but this poses a legitimate safety risk to you and the dwelling (nevermind the equipment). I'd either hire an electrician, or use internally grounded (Class 2) devices. In theory you could also wire your own ground to plumbing in the house or a ground spike out in the yard, but I'd really suggest getting a professional.
post #5 of 12
Quote:
Originally Posted by qoouep View Post

Maybe I'll just go without for the Summer. I'll only be here till September. Hopefully my place next year will have the ground. I'm studying abroad in Japan next year.

 

Most Japanese electrical sockets do not have a ground prong. Grounded plugs will not fit into the two pronged sockets without the "cheater" adapter.

post #6 of 12
Thread Starter 

Oh yeah, and they have a different voltage too, don't they? Arrgh. Maybe I'll just be stuck with my uDAC all year...

post #7 of 12
Quote:
Originally Posted by qoouep View Post

Oh yeah, and they have a different voltage too, don't they? Arrgh. Maybe I'll just be stuck with my uDAC all year...

100V.
post #8 of 12
Quote:
Originally Posted by qoouep View Post

Oh yeah, and they have a different voltage too, don't they? Arrgh. Maybe I'll just be stuck with my uDAC all year...


Depending on where you are in Japan, the electricity will have a different frequency too (50 Hz versus 60 Hz).

post #9 of 12
Thread Starter 

Uggghhhh, uDAC and my new ER4P it is then...

post #10 of 12

Just a general question. 

In this case, I guess the ground is 'floating' ? There's no separate 'earth' point, but the neutral is also referenced to ground, right?

Would an isolation transformer help in this case?


Edited by proton007 - 6/28/12 at 5:51pm
post #11 of 12
Quote:
Originally Posted by proton007 View Post

Just a general question. 
In this case, I guess the ground is 'floating' ? There's no separate 'earth' point, but the neutral is also referenced to ground, right?
Would an isolation transformer help in this case?

I don't know world-wide standards, but in the US it's my understanding that it violates NEC for the iso transformer to disconnect from earth. Due to safety. Every iso I've ever used/seen is a Class 1, and has an earth (all CVTs/AVRs are also wired like this); going back to the safety thing. You can't just float it because those C1 devices can become lifetakers in a fault scenario when wired like that. Even with cheaters you're supposed to tie that little washer bit into earth somewhere; they're just designed to let you plug into two-prong outlets and ref ground elsewhere. They aren't designed, explicitly, to defeat the protection features of the device. redface.gif

Now, all of that having been said, I've seen some class 2 devices (at least I should say: devices with a class 2 logo on them) with 3-prong connectors. These devices are curious and also serve to annoy me, because they usually make trouble for the rest of the world.
post #12 of 12
Quote:
Originally Posted by obobskivich View Post


I don't know world-wide standards, but in the US it's my understanding that it violates NEC for the iso transformer to disconnect from earth. Due to safety. Every iso I've ever used/seen is a Class 1, and has an earth (all CVTs/AVRs are also wired like this); going back to the safety thing. You can't just float it because those C1 devices can become lifetakers in a fault scenario when wired like that. Even with cheaters you're supposed to tie that little washer bit into earth somewhere; they're just designed to let you plug into two-prong outlets and ref ground elsewhere. They aren't designed, explicitly, to defeat the protection features of the device. redface.gif
Now, all of that having been said, I've seen some class 2 devices (at least I should say: devices with a class 2 logo on them) with 3-prong connectors. These devices are curious and also serve to annoy me, because they usually make trouble for the rest of the world.

Thanks for the info.

AFAIK, for electronics, the logic section (5V) can work with floating ground. The power section (supply/amp) needs a proper ground (or earth) as safety requirement.

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