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Old 11-09-2016, 08:19 AM   #41
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Originally Posted by Drsparky14 View Post
Have a new circuit ran with an isolated ground. Use hospital grade isolated ground outlets. Make sure there is at least 20ohm to ground or less resistance on your grounding electrodes.

I've had a neutral fail at the electrical utility transformer before and the ground rods were not installed properly at the house. I checked the voltage at an outlet and it was at 3400 volts.

Extreme example I know, but your grounding electrodes need to be properly installed.


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Ground rods don't fix an open neutral at the PoCo transformer.
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Old 12-29-2016, 05:41 PM   #42
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Originally Posted by PlugsAndLights View Post
I'm always skeptical when the grounding is supposed to be the cause
of a problem. About all the gnd does is protect the hydro distribution
system from lightning strikes.
True, grounding electrodes aren't very useful. except when lightning hits.
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Old 01-12-2017, 06:33 PM   #43
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Hello Everyone, We are a residential technology company and have a client who is having lots of various problems, that i suspect power quality to be the issue. My client has a brand new house in a new subdivision of Saskatoon, SK, he has been living in the home for a little over a year now. in the past year we have replace many major low voltage electrical devices, Projectors, TVs, amplifiers, automated light switches etc with literally every week getting a phone call to something else failing in his home. I have suspected power problems from day 1, but am not sure how to troubleshoot this as the power is always fine when we are onsite. The client doesn't believe me when i suggest power problems because the failures don't regularly happen after a power outage. Although a power outage is probably the only real time power issue that a homeowner could directly see or relate to. Are there any tests that can be done to test for ground resistance, or overall power quality? Or any other ideas? Saskatoon is one of the fastest growing cities in Canada and so lots of new subdivisions and power grid being expanded and tied into all in my clients area of the city,



I would suggest sitting down with the homeowner and expressing real concern for his home. As I sat here and read what you said its clear money isn't the issue but the problem is exactly what you're saying. And you can keep taking his money and fixing numerous issues but it wont fix the actual problem that is causing it to happen.
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Old 01-12-2017, 10:02 PM   #44
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Quote:
Originally Posted by Drsparky14 View Post
Have a new circuit ran with an isolated ground. Use hospital grade isolated ground outlets. Make sure there is at least 20ohm to ground or less resistance on your grounding electrodes.

I've had a neutral fail at the electrical utility transformer before and the ground rods were not installed properly at the house. I checked the voltage at an outlet and it was at 3400 volts.

Extreme example I know, but your grounding electrodes need to be properly installed.


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3400V wrt what reference point? And what meter did you use to measure this voltage. Mine would have blown up.
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Old 01-12-2017, 10:05 PM   #45
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3400V wrt what reference point? And what meter did you use to measure this voltage. Mine would have blown up.
Most blow the internal fuse over 1000v.
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Old 11-01-2017, 06:41 AM   #46
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Originally Posted by OneTouch View Post
Hello Everyone, We are a residential technology company and have a client who is having lots of various problems, that i suspect power quality to be the issue. My client has a brand new house in a new subdivision of Saskatoon, SK, he has been living in the home for a little over a year now. in the past year we have replace many major low voltage electrical devices, Projectors, TVs, amplifiers, automated light switches etc with literally every week getting a phone call to something else failing in his home. I have suspected power problems from day 1, but am not sure how to troubleshoot this as the power is always fine when we are onsite. The client doesn't believe me when i suggest power problems because the failures don't regularly happen after a power outage. Although a power outage is probably the only real time power issue that a homeowner could directly see or relate to. Are there any tests that can be done to test for ground resistance, or overall power quality? Or any other ideas? Saskatoon is one of the fastest growing cities in Canada and so lots of new subdivisions and power grid being expanded and tied into all in my clients area of the city,



You can use Fluke 1625-2 to determine the health of your earth ground systems or ground resistance.
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Old 12-06-2017, 06:28 PM   #47
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Use a data logger to capture voltage fluctuations and leave it in place for a few days to a week. Then print out a report and give it to the power company if you need proof that they are the cause. I also think you should unplug all the electronic devices until you get this resolved. It could be something simple like a floating nuetral on a branch circuit or and that might not be the power company causing that. Is this an issue on both A and B phase or just one leg ? Good luck ...
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Old 12-06-2017, 06:55 PM   #48
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As someone stated in another post you should rent a monitor. to view voltage over a period. I have a suspicion that that being in in area with new construction and more than likely lackluster grid system that you may need a power conditioner.
Something like this should do the job for a room that is loaded with sensitive equipment.
Tripp Lite power conditioner. I cant post a link to it (I tried) but this board requires at least 20 posts to make a link

Its more than likely the POCO at fault but you need to monitor the voltage. About 10 years ago I made a small fortune replacing replacing motors because the POCO was doing work in an area with a loads of bastard leg connections and the POCO had once reliable and working motors running in reverse so they burned out-good luck taking it to court though as I told a customer
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Old 12-06-2017, 07:09 PM   #49
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Tripp Lite power condition costs about $160 to $189 dollars. It comes in a 120 volt or 230 volt version. The one I would recommend for you does 6 outlets but they have versions with higher wattage's that do up to 14 outlets if that is required.
1800W 120V Power Conditioner with Automatic Voltage Regulation (AVR), AC Surge Protection, 6 Outlets........on the Tripp Lite site
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