Search: Posts Made By: Gregor
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04-24-19, 12:53 AM
Replies: 6
Views: 429
Posted By Gregor

Tolyn Ironhand, here is the link that says the...

Tolyn Ironhand, here is the link that says the neutral from the derived system should only be bonded at one location. It does list an exception to this, but only for specific cases where multiple...
04-24-19, 12:46 AM
Replies: 6
Views: 429
Posted By Gregor

AllanJ, it is my understanding that a neutral...

AllanJ, it is my understanding that a neutral (grounded conductor) may only be bonded to ground at one place in the system. If it is bonded at multiple locations, then this creates parallel paths...
04-24-19, 12:32 AM
Replies: 6
Views: 429
Posted By Gregor

CasualJoe, I didn't really specify my question...

CasualJoe, I didn't really specify my question very well, but I am asking if bonding the neutral ( grounded conductor) from the derived system at the utility service panel is correct.
04-23-19, 02:08 PM
Replies: 6
Views: 429
Posted By Gregor

3 phase distribution and neutral bonding

It's been a while since I've posted on this forum, but I have a question that I just can't find an answer for. So here it is:


I do maintenance on a friend's old industrial/commercial buildings....
09-23-08, 12:30 PM
Replies: 9
Views: 2,025
Posted By Gregor

I was doing some reading and was a little...

I was doing some reading and was a little surprised to see that for a derived system the neutral is bonded to ground either at the transformer or the main service panel, but not both. This is...
09-20-08, 09:15 PM
Replies: 9
Views: 2,025
Posted By Gregor

Thank You mukansamonkey. I have a Fluke...

Thank You mukansamonkey.

I have a Fluke insulation tester that I believe automatically de-energizes the circuit when the test button is released. It's a digital tester which hopefully will work...
09-19-08, 07:26 PM
Replies: 9
Views: 2,025
Posted By Gregor

Thanks for the input. I am aware of the dangers...

Thanks for the input. I am aware of the dangers in this kind of work. I am not exactly "cutting my teeth" on this project. I have done maintenance in camps for about ten years now, oftentimes...
09-15-08, 06:35 PM
Replies: 9
Views: 2,025
Posted By Gregor

delta to wye transformer question

I am living at a camp that has a 480VAC (or something like that) distribution system. At each group of buildings there is a delta to wye transformer that steps it down to 208/120v. I would like to...
05-16-07, 01:59 PM
Replies: 4
Views: 7,832
Posted By Gregor

Thanks for the info, Greg

Thanks for the info,

Greg
05-15-07, 04:20 PM
Replies: 4
Views: 7,832
Posted By Gregor

Cu9Al

Just a quick question. I have a wire connector stamped with the specification Cu9Al. Does that mean it is ok for aluminum and copper connections? Is it ok for aluminum to copper connections? I...
01-22-07, 08:53 PM
Replies: 6
Views: 5,000
Posted By Gregor

Cool OK, I went back and thoroughly checked the...

OK,

I went back and thoroughly checked the dryer. First off, while it still cycled more frequently than the other dryers I compared it to, the burner on-off times seemed more reasonable. (I...
01-19-07, 12:04 PM
Replies: 6
Views: 5,000
Posted By Gregor

Smile I have been away from my computer again for a...

I have been away from my computer again for a while, but I found the problem. The gas valve outlet at the wall was covered with a skin of paint, probably from when my friend and his wife painted the...
01-10-07, 11:39 AM
Replies: 6
Views: 5,000
Posted By Gregor

Thanks for the responses. I have been away for a...

Thanks for the responses. I have been away for a few days and haven't had the opportunity to reply until now. As for the gas pressure, all other appliances (furnace, water heater, stove) are and...
01-03-07, 09:58 PM
Replies: 6
Views: 5,000
Posted By Gregor

Gas Valve Problem?

My friend has a Kenmore gas dryer that hasn't been getting hot enough. The problem has been getting worse over the last two years. I checked all his electrical components, and they checked out ok....
12-30-06, 05:01 PM
Replies: 2
Views: 3,610
Posted By Gregor

Thanks, Larry. It's nice to know what they are...

Thanks, Larry. It's nice to know what they are called. The one we left in seems to be doing just fine even though I expected to start leaking since it had been sitting in the same position ...
12-29-06, 08:31 PM
Replies: 2
Views: 3,610
Posted By Gregor

Water Pipe Expansion Joint?

When I was helping a friend repair the 1 1/2" PVC water main to his house we found something neither of us had seen before. His house is in a rural mountain town on the side of a canyon. His main...
04-01-06, 06:22 PM
Replies: 4
Views: 1,408
Posted By Gregor

Thanks for the info, Rocky Mountain. Now that...

Thanks for the info, Rocky Mountain. Now that you've explained it, I do remember coming across the term Absolute Interrupting Current in one of my books somewhere in the past. I just couldn't ...
04-01-06, 05:08 PM
Replies: 4
Views: 1,408
Posted By Gregor

Filling out a load card

I need to complete a load card for an electrical inspection. The card was obviously designed for a complete residence, but we are filling it out for guest apartment with no kitchen or laundry, so I...
02-22-06, 11:51 AM
Replies: 5
Views: 1,534
Posted By Gregor

San Diego County. It was a nightmare. Smoke and...

San Diego County. It was a nightmare. Smoke and ash everywhere, thousands of people evacuated, probably several hundred or more homes burned down. I personally know four or five families who lost...
02-21-06, 07:21 PM
Replies: 5
Views: 1,534
Posted By Gregor

GFCI outlets on AFCI breakers

I want to run an outdoor receptacle from a bedroom circuit, but the bedroom ciruit is on an AFCI breaker to comply with recent code changes after our big fires in 2003. Are there any problems with...
01-06-06, 11:59 PM
Replies: 3
Views: 3,078
Posted By Gregor

Thanks for the info. That is what I was looking...

Thanks for the info. That is what I was looking for. I actually did find an electrical supply house that had one 2" expansion fitting today. They gave it to me for free just to get it out of the...
01-05-06, 11:20 PM
Replies: 3
Views: 3,078
Posted By Gregor

Anybody know about expansion fittings?

I am helping a friend run an underground electrical line to her guest house. The contractor who built her main house ran 1 1/4" PVC about half way and ended at a stub out. I want to continue the...
07-28-05, 01:30 AM
Replies: 16
Views: 20,140
Posted By Gregor

Yes, you can do this with a couple of...

Yes, you can do this with a couple of precautions.

First, you will want to replace the 40 amp double breaker with a 20 amp double breaker. The double breaker should be one that is handle-tied so...
07-22-05, 10:34 AM
Replies: 15
Views: 3,919
Posted By Gregor

I will defer to Electrical/Computer Engineer Bob...

I will defer to Electrical/Computer Engineer Bob here. I am sure he has much more experience. I always check the voltage to be sure that I have correctly figured out the circuit. I would, though,...
07-21-05, 11:08 PM
Replies: 15
Views: 3,919
Posted By Gregor

Yes, the other switch that controls the light. ...

Yes, the other switch that controls the light. As my boss tells me about this stuff, "There are no silly questions."

I am not sure about the description of your meter. It sounds like it would...
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