2. amps-preamps
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Dedicated power

I'm looking to run a dedicated 30a and dedicated 20a line to my system directly from the fuse box. 
I currently have some florescent lights and some other junk on the line so I'm hoping it will be an improvement. Things sounds like they are straining somewhat when you crank things up. The amp will go on the 30a line and the digital stuff on the 20a. 
Anyone done this and saw improvements? 
mofojo
ieales's avatar
ieales
1,201 posts
 
Sunfire XTEQ:
  • Input Power100-120 / 220-240 V~, 50/60Hz, 900W
  • Output Power   3,000 Watt
¿Que?

2800W is way overload for a 15A breaker, moderate overload for a 20A.  It's enough to cause a breaker grief, particularly an aged one.

One thought, what are the street input connections like? I've seen some really horrible stuff in the meter and into the box.
invalid
1,307 posts
 
I haven't checked street input connections, I had to install a new service about 28 years ago, because the ice on the roof took the mast down. I don't seem to have any problem with my hot tub or air conditioner. The breaker is only 2 years old.
builder3
776 posts
 
ieales742 posts02-08-2021 11:32am

................It's my contention that improvements heard after a 10ga rewire are largely due to direct clean connections and not the wire gauge. If rewiring for audio, go direct and only use screw terminals on quality outlets.

My media room has a dozen outlets which were daisy chained with push terminal quick connections. This circuit is used for 2x 600w electric heaters. I'd estimate the length at about 80 feet. I had a 5-6v drop from the first outlet to the last when loaded by both heaters. Removing the quick connects, cleaning the wire and using the screw terminals resulted in under a volt drop when loaded.
In my shop (not my music room), I have nothing run through the outlets. They aren't wired in series, each is pig-tailed off the 20A circuit(s) running through the boxes. This would seem to me to be advantageous on an audio circuit, as well. Obviously, if you have a dedicated circuit, it's not an issue.
Post removed 
jea48
4,785 posts
 
invalid110 posts

02-08-2021
3:33pm

The lights are wired on a separate circuit, it was a 2800 watt sunfire subwoofer, playing telarc time warp. I’ve seen lights blink in too many different systems to believe it could just be dirty connections. It has to be voltage drop on the line.

Here is a Jon Risch post. It’s in regards to VD on a power cord but it could be used for branch circuit wiring as well.
(Jon Risch is a well respected EE )
https://www.audioasylum.com/audio/cables/messages/13538.html

This from Nelson Pass.
https://www.passlabs.com/technical_article/power-supplies-commentary-for-consumers/

Here is a post from Ralph (M) . Again the subject is for power cord VD.
https://www.audioasylum.com/audio/cables/messages/17/174988.html


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