New Dedicated Line - Almost No improvement
Hello,
Newbie here and electrical idiot. Just moved to a new to us house in Tampa. Before we moved in I had an electrician put in a dedicated line (has it's own breaker switch) which is 10 gauge and two Furutech GTX-D outlets - Rhodium.
When I hooked up the EMI meter in my old house, which didn't have a dedicated line, the reading was usually around 26 or so IIRC. At the new house the outlets are 89 usually and the dedicated line is usually around 82 - so not much help for the cost of the "project" and pretty noisy.
Also, when the ac /hvac is running the meter reads about 100 points higher (!) for both the regular outlets and the dedicated Furutechs. Not good.
Thoughts? Does the dedicated line need it's own breaker box?
I'm also considering a line conditioner but wanted to see what could be done here. Thanks.
My ground rod is bigger than your ground rod.😁 Fact. In the interest of getting the best, most consistent ground, I used the 25 ft long/deep iron drill pipe for my water well. Damned thing is very thick, and hard to drill a hole for the bolt used to connect the copper wire to. Now it is a done deal, and I don’t worry about having a good enough AC ground for my panel. And yes, it is only a couple of feet from the electrical panel. |
@jea48 , while I agree in principle that an earth ground connection is generally not the cause of noise, it is not always not the cause, and when one considers emitted EMI, it can be critical. The earth ground connection (in theory) holds the metal in the equipment, cable shields, etc. to the same potential as earth, but we can call it a ground plane. Now as noted, that connection is more than just cable resistance, it is also impedance. If you remove the earth ground connection, then all the metal floats, and it floats in comparison to earth ground, which means you have a capacitor to earth ground and a "new" path for EMI that you would not have if connected to earth ground. This will never be an issue at analog audio frequencies, but it can be an issue at higher frequencies even with the higher impedance to earth ground.
You know what is really foolish? Those ground boxes filled with dirt that don't connect to anything. |
@lowrider57 I think the grounding issue has assumed a life of its own, per the above comments. I used 1/2 or 5/8 solid copper pipe (not an iron/copper grounding rod., 6 feet long. We drilled straight down, hammered the rod in and then filled the hole with a high-clay content soil. Was told this clay compound would help with grounding and conductivity. I was skeptical, but for the additional $15, I wasn't going to argue that point. My point really is there are many factors to consider with stable, clean power to the audio room. I didn't want to inadvertently omit one thing that might render all the other work wasted. And as pointed out, we are still at the mercy of the grid. |
You are at the mercy of the people who designed your equipment @papafrgog. |
| Post removed |
