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Old 5th August 2009   #499
Virtalahde
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Join Date: Mar 2003
Location: Kuhmoinen, Finland
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Quote:
Originally Posted by copiapoa View Post
Please,study the circuit!!!
How come I have a feeling I'm discussing with Mr. Hand Crafted Labs on another alias in here?

Quote:
Originally Posted by copiapoa View Post
At such connection this device has two degrees of protection.
No, it doesn't. You really need to understand the difference between signal ground and safety ground. Here's another quote from the Whitlock's paper to which I linked above:

Quote:
The outlet safety ground is routed, through either the green wire
or metallic conduit, to the neutral conductor at the main breaker panel. This low-impedance connection to neutral allows high fault current to flow, quickly tripping the circuit breaker and removing power from the circuit. To function properly, the SAFETY GROUND MUST RETURN TO NEUTRAL. Note that the earth connection had absolutely nothing to do with this process!
You're referring to signal ground. If the XLR cables are properly soldered, the pin 1 is connected at both ends and so on, the unit might be eventually connected to safety ground at some point. It's a complete gamble if the solder joints, the XLR shielding and what not in-between hand handle the current or if the connections are even capable of popping the fuse in failure.

Quote:
Originally Posted by copiapoa View Post
Every day and every night the case is under ZERO POTENTIAL!!!!!Even if to turn out the earth in a power connector.
It is under zero potential. Until something melts down, insulation breaks.. you name it. Driving a motorcycle without a helmet is perfectly safe until you hit a truck.

The safety ground is there for safety in such cases. There really is nothing to argue about because disconnecting the safety ground is illegal and dangerous, period. It's the law.
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