Search: Posts Made By: telecom guy
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01-17-21, 04:19 PM
Replies: 14
Views: 442
Posted By telecom guy

I see Siemens breaker on the right side and a SQD...

I see Siemens breaker on the right side and a SQD on the left side. ?? Are the breakers all new, with lots of CAFCI units?
There is a green taped ground conductor landed on the left side ground...
01-17-21, 11:00 AM
Replies: 11
Views: 394
Posted By telecom guy

A plaster ring comes to mind, but the existing...

A plaster ring comes to mind, but the existing box is recessed. I see what looks like a nail on the left side of the box? Going into wood stud or is this a concrete block wall?
I'd consider ripping...
01-15-21, 05:06 PM
Replies: 5
Views: 193
Posted By telecom guy

Is there a basement below?

Is there a basement below?
01-10-21, 09:14 AM
Replies: 9
Views: 366
Posted By telecom guy

Curious what load is being driven. But, 133A can...

Curious what load is being driven. But, 133A can be supplied by a couple of 8D wet L/A batteries. For a little while. What kind of time are you needing?
01-10-21, 07:21 AM
Replies: 16
Views: 446
Posted By telecom guy

You did say all the holes are 7/8, but some boxes...

You did say all the holes are 7/8, but some boxes mix 1/2 and 3/4 KOs.
01-09-21, 10:20 AM
Replies: 12
Views: 247
Posted By telecom guy

I think very few nicad packs are still around...

I think very few nicad packs are still around these days. I recycled my 19.2’s a decade ago.
ie. I’m not optimistic they are good.
01-05-21, 11:18 AM
Replies: 6
Views: 238
Posted By telecom guy

Specs look reasonable to me. I put in a Square...

Specs look reasonable to me. I put in a Square D 80kA for my service, also using a 2P20A breaker to feed it. Siemens should be even better.
01-04-21, 06:14 PM
Replies: 6
Views: 238
Posted By telecom guy

Littlefuse has been selling thermally protected...

Littlefuse has been selling thermally protected MOVs for a few years now. I tested a run of these about 18 months ago with up to 500Volts across them. They got hot but did shut down no with no...
01-04-21, 05:54 PM
Replies: 9
Views: 236
Posted By telecom guy

I would call the POCO, ask for a project manager...

I would call the POCO, ask for a project manager in the distribution division, and ask if there is PLC ( power line communication) in your area. The answer you get may drive the next question to SqD.
01-01-21, 07:49 AM
Replies: 5
Views: 165
Posted By telecom guy

No sharp turns on conductors. Magnetic...

No sharp turns on conductors. Magnetic “bunching” 😳. 8” minimum bend radius.
...
12-31-20, 04:17 PM
Replies: 17
Views: 308
Posted By telecom guy

How does one replace the pan contacts without a...

How does one replace the pan contacts without a utility service disconnect? In my area, the POCO wants a permit pulled.
12-31-20, 02:13 PM
Replies: 5
Views: 165
Posted By telecom guy

This could get into the difference between single...

This could get into the difference between single point grounding and the effective use of halo grounds. I would tend to use here separate wires for the cable and telephone wires to the nearby...
12-31-20, 08:39 AM
Replies: 14
Views: 189
Posted By telecom guy

VDE tends to be more conservative in their...

VDE tends to be more conservative in their ratings.
12-30-20, 05:02 PM
Replies: 4
Views: 136
Posted By telecom guy

Many smart meters use close range 2.4Ghz mesh...

Many smart meters use close range 2.4Ghz mesh with a data concentrator and 8/900Mhz longer range link.
12-30-20, 12:21 PM
Replies: 14
Views: 189
Posted By telecom guy

Yes. An equipment receptacle, plays by different...

Yes. An equipment receptacle, plays by different rules than a premise receptacle, as far as voltage rating. I’m not even sure if the machine male connector is even called a receptacle.
12-29-20, 12:16 PM
Replies: 9
Views: 236
Posted By telecom guy

Eaton breakers? They have had history on this...

Eaton breakers? They have had history on this but did fix them.
12-27-20, 07:07 AM
Replies: 2
Views: 102
Posted By telecom guy

If you look at the specs for revenue meters, you...

If you look at the specs for revenue meters, you will find that they measure real energy. Of course, there are limits in frequency response, sometimes rolled into a measurement called crest factor.
12-26-20, 09:29 AM
Replies: 17
Views: 376
Posted By telecom guy

No wiring defect can cause 240 v to earth. ...

No wiring defect can cause 240 v to earth.
But, in the larger view, there is a “open wire” defect that can cause a significant exposed 120v to earth condition. That is a neutral/ground open on a...
12-24-20, 08:26 AM
Replies: 17
Views: 376
Posted By telecom guy

I like to run some current through to ground for...

I like to run some current through to ground for a better test. Especially, when faced with an older EMT system with no ground wire. But this won’t work on a GFCI breakered circuit.
With only an...
12-22-20, 09:27 AM
Replies: 25
Views: 583
Posted By telecom guy

Your breakers are dual mode. There is a thermal...

Your breakers are dual mode. There is a thermal element that responds to both slow overloads and also to high terminal temperatures. Second mode is magnetic, and trips with more significant...
12-22-20, 06:56 AM
Replies: 25
Views: 583
Posted By telecom guy

Is it the 15A breaker that is sparking? When...

Is it the 15A breaker that is sparking? When you say the box is sparking, that means that the buss bar is loose/bad, or a major connection or insulator is somehow in trouble.
Branch breakers are...
12-18-20, 02:04 PM
Replies: 14
Views: 395
Posted By telecom guy

I suspect this designer/vendor/manufacturer did...

I suspect this designer/vendor/manufacturer did not have the knowledge or resources to test this circuit to the level required. Note that the US, unlike the EU does not have this requirement as a...
12-18-20, 06:24 AM
Replies: 14
Views: 395
Posted By telecom guy

Is this trip happening exactly when the switch is...

Is this trip happening exactly when the switch is thrown? If so, I would suspect it is an EFT event, or possibly ESD. Both of these can be tested against, using specialized test equipment....
12-15-20, 06:24 PM
Replies: 17
Views: 518
Posted By telecom guy

And I lost one, permanently, due to a lightning...

And I lost one, permanently, due to a lightning strike. GFCI’s, being made up with semiconductors, have limitations. Exceed the ratings, and bad things happen.
12-15-20, 07:20 AM
Replies: 11
Views: 167
Posted By telecom guy

LCDI's are a response to pinched portable air...

LCDI's are a response to pinched portable air conditioner cords, causing an arc hazard. They do use a shield as a sort of sensor. Since the shield surrounds the current carrying conductors, it...
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