Hi Al,
So question is what all is powered in standby?
Just the power transformer?
Or the transformer and DC power supply?
Good question.... And then there is the soft start feature of the amp?
Where is the circuit installed. Does it limit, smooth out the inrush on initial standby start up only? Or both standby start up as well as active mode activation?
How about that 50' 16/3 extension cord??
Yes the cord is too small for the amp.... But what about what is it doing?
Two things come to mind. If the current does go up as the amp goes into the active mode then I would imagine the voltage drops. Available Power at the end of the 50' cord would be reduced. Enough so the amp is able to complete the process of going into active and playing music without tripping the magnetic breaker.
You stated earlier you thought the amp might be reacting to voltage transients and thus causing the magnetic breaker to trip.
Would a good SPD, surge protection device, installed between the amp and the wall outlet shunt out the high voltage transients?
One last thought I wonder if it would help if the hot conductor of the 20 amp dedicated branch circuit was moved to the other line, leg, in the electrical panel?
Jim
4. Not sure what you are asking the 15amp breaker which is the on/off switch for the breaker trips it to the off position when I noticed this drop. Remember this happens after i go from standby mode to Active mode.From what Sailcappy says in the quote above the breaker trips as the amp moves from standby to active.
08-21-12: Sailcappy
So question is what all is powered in standby?
Just the power transformer?
Or the transformer and DC power supply?
Which relates to your point about inrush current. It is not clear to me when the major inrush current normally occurs. Does it occur:
Good question.... And then there is the soft start feature of the amp?
Where is the circuit installed. Does it limit, smooth out the inrush on initial standby start up only? Or both standby start up as well as active mode activation?
A related thought that occurs to me is that I would not assume that the voltage drop that was observed as the breaker was tripping was due to inrush current that normally occurs at that point. It seems conceivable to me that contact bounce occurring in the breaker as it tripped might have resulted in inrush current and voltage drop that would not occur at that time ordinarily. So the voltage drop might have just been a consequence of the breaker tripping, rather than reflecting a large inrush current that may have caused the breaker to trip. Or perhaps some sort of inductive kickback effect from the power transformer or a relay was responsible for the voltage drop, given especially that the amp was not designed with the expectation that it would normally be powered down from the active state by means of the breaker.Agree... As I said in an earlier post it could have just been a coincidence at the same time some other load started and the VD occurred at the main electrical panel.
How about that 50' 16/3 extension cord??
Yes the cord is too small for the amp.... But what about what is it doing?
Two things come to mind. If the current does go up as the amp goes into the active mode then I would imagine the voltage drops. Available Power at the end of the 50' cord would be reduced. Enough so the amp is able to complete the process of going into active and playing music without tripping the magnetic breaker.
You stated earlier you thought the amp might be reacting to voltage transients and thus causing the magnetic breaker to trip.
Would a good SPD, surge protection device, installed between the amp and the wall outlet shunt out the high voltage transients?
One last thought I wonder if it would help if the hot conductor of the 20 amp dedicated branch circuit was moved to the other line, leg, in the electrical panel?
Jim
