HELP I think I have an electrical issue??


A few months ago I had 2 20amp dedicated lines with hospital grade duplex's installed. All was well with my Bel Canto Ref1000 mono's. Well a few days ago I just got a pair of Genesis m60 tube amps. I was noticing a clicking noise coming through my speakers. I first noticed this when I was just warming up the amps with no source on. Then I also noticed the clicking when a source was on with music playing.

So it turns out that the clicking noise is my electric ignition of my gas furnace, is somehow playing through my speakers (Or maybe its just one of them, not exactly sure yet) This is a very strange and annoying. If anyone has any ideas please let me know!

Tim
tmesselt

Showing 10 responses by hevac1

Hospital outlets have an isolated ground. The wire going to it should be 3 conductor plus ground. Black is hot, White is common, Red with green tape added is ground to the outlet and the copper wire is for bonding to the metal outlet box. If you used 2 conductor with ground and did not use a metal box then you may not be grounded correctly.
Remove the outlets and put a regular outlet in. This may help. It is a waste if you use isolated grounded outlet and do not use the correct wire. Tube amps will have issues with bad grounds more than solid state. You could also try cheater plugs and see if the solves your issue.

Also on your breaker box, as you count down on the each side of the breaker box every other breaker is the opposite side of power. Breakers on the left side, 1 is 1 side of 208 and breaker 3 is the other side and the same for the right side 2 is one side and 4 is the other this is so if you put in a 2 pole breaker you get 208. Your breakers for your amps should be on the oposite line from your furnace. There is a thread in Tech that shows the inside of a breaker box and how it is wired for power to be on the same side.
If the outlet is hospital grade or isolated ground it must be wired as I said before. The differance between an isolated ground and non isolated is that the outlet ground and the ground screw are connected to each other only and not to the metal section that hold the outlet to the box, non isolated outlets the three are connected to each other. If you used an old work plastic box there is no bonding of the grounds and is not LEGAL and you could get hurt. I would change the outlet to a good regular outlet or get a metal box and a pair of ears for old work and replace it, I would do the box myself if it were me, you must srcew the ground to the box for good contact.
Doing this will defeat the reason to use an isolated outlet. How hard would it be to replace the wire? If you paid for this to be done it is wrong & the electrician should redo it. If not tell him you will ask an inspector to check it. You could also try a sub panel and run a seperate ground. This would be best.

As far as your furnace gos. I would make sure your equipment is on the opposite side and fed first. Equipment top breaker 1 & 5 right side 2 & 6 left side furnace as low as you can go in panel. I do not know how many breakers fit in your box or the type so I cannot tell you any more. I always feed furances and a/c unit at the bottom of the box for power and connect the ground as close to the ground wire as I can or I add sub panel.
This could also be because your furnace is not wired correcly by the way.

Talk to a local electrician they will know more of your local code. What state are you in?

I recommend you do not try the sub panel yourself or any of this for that matter it can get tricky.
Jea48
I know not all hospital outlets are not isolated. Most people here who are installing hospital grade are doing it for the isolated ground and unless wired correctly it will not be or can hurt someone. When an electician or home owner installs it and does not use the correct wire it is a waste of time & money. You must bond grounds.
Jea48,
you stated
If the receptacles are isolated ground recepts you could have left them in.... NEC requires if an isolated ground type receptacle is used with a plastic box the cover plate has to be made of a non conductive material... Plastic, Nylon, wood, ect....

For insolated ground outlets in Mass you can not use 2 conductor with a ground that is connected to other devices it also defeats the purpose. The ground wire must be insolated all the way back to the panal. If the bare ground is used it must be in a metal enclosure. Either purchase three wire no ground or 3 wire with ground and use metal boxes or cut the ground off and tape it.
Tmesselt,
How old is your house and the develepment. Most new house the gas and electrical are plastic not metal. The piping to your house could be plastic also so grounding to them will do nothing. In that case the electrician puts 2 rods in the ground 6 feet from each other for house ground. This has been an issue here in Mass and else where and do not know if it has been resolved. For now we do both just to be safe and pass inspection.

Like i said before it could be your furnace wiring. I myself have found a few wired backwards it still work cause its 115. The motor or most anything 115 volt does not care if you connect the blacjk wire to common and the white wire to hot it will still work it is just not correct. It could also be your ignitor has a loose ground. Have your service company check the wiring to make sure all parts are in phase. It could be just the control transformer output grounded on the wrong side.

Ngjockey.
This is why I am thinking line reactor for my equipment.
Jea48
I said I knew about the IG and non IG Hospital grade outlets. I will depend on what and from whom they purcahase the outlet from the PS Audio Power Ports are IG.
How electrical is run and is terminated will differ from state to state and the NEC is a referance for states to write there own. Some states are more lax on the NEC rules, some are not and some add rules. MEC and not the NEC is what I have to go by.

Here in Mass home owners can only pull wires with an electrician (for now anyway) but not terminate no matter the voltage, legally anyway. Not even a thermastat or doorbell.

In NH you run and terminate as long as you own it.
Your state may be differant then mine is.
Jen48,

I called my inspector today and asked him why I had to change the pastic boxes to metal on the IG outlets on a job he inspected for me 2 months ago. I am putting this in layman terms. If there is any METAL on an outlet not used for powering the outlet it must be grounded no exceptions.
He also said if I could find an outlet without metal tabs for mounting then the way I had it would have been fine.

Do you know of any?

Sorry if I blabbed or you thead Tmesselt.
Layman terms was not for your benifit but for others.

I asked before and was told Metal box only allowed.

Too much metal for a home too afford. BX not allowed.

Differant state rules.

I asumed it was IG.

Will email to explain further.
This still sounds like a faulty ground or miss aliened igniter. I have always had tube equipment as part of my setup. I have never had this problem. Please post the maker of your furnace, Model and Serial Numbers also Style number if available. Carrier & Bryant use style numbers, they are important. Email them if you like. I will call the manufacturer and find out how to repair and or lookup service bulletins if available. I will send you what ever I get but do not try to repair it yourself.
WARNING: Gas furnaces can be very dangerous and should only be repaired by a qualified tech. A furnace is NOT a do it yourself product.
Well I talked with one of thier service tech an he said this happened to a friend of his that has a home theater also.
He said his friends unit was on the same feed as the power for the home theater so they changed that around so it was not. Then he (this may be an electrical code issue in your area)install at ground rod at the unit and ground it to that instead of the ground to the box. That took care of it. Call an electicain in you area and ask him to make sure your furnace and your sound system is on differant 110 feeds from the 208/230 coming in your house. You could also ask him if he can install a grounding rod. He will know if it is allowed in your area. Ruud factory service around here is Granite Group tel.# 978-458-3200 they were very helpful. They should be able to give you your local reps number. They were not easy to find. No wonder I don't see thier units very often around here.
Tell them mikie sent you. LOL

Other than seeing your system. this is all I can do.
If you have the means I will be happy to come to your location unless you live in the Boston MA. area then I'm around the corner.