Search: Posts Made By: drjrt
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08-27-19, 10:13 AM
Replies: 2
Views: 269
Posted By drjrt

I'm worried if I plumb all three sources into the...

I'm worried if I plumb all three sources into the same outlet, it could back flow into the other devices (HVAC my biggest concern) if there was a flow issue, particularly since the crawl space...
08-26-19, 11:48 AM
Replies: 2
Views: 269
Posted By drjrt

Best way to remove condensate from various sources?

I have a home on a crawl space. The HVAC (in the crawlspace) has a 3/4" PVC through the concrete block to drain outside by gravity. Years ago I plumbed a first floor dehumidifier into this line to...
08-26-19, 07:43 AM
Replies: 8
Views: 387
Posted By drjrt

I guess my primary concern is it being disrupted...

I guess my primary concern is it being disrupted by someone working in the crawl space.
Stapling it to the underside of the floor joists should be adequate, I guess.

Thanks!
08-26-19, 07:28 AM
Replies: 8
Views: 387
Posted By drjrt

6awg bare copper. I had a plumber in there a...

6awg bare copper.

I had a plumber in there a year or so ago replacing a water heater and just discovered he had disrupted the ground wire so much in his work (it runs near the water heater) I was...
08-26-19, 06:27 AM
Replies: 8
Views: 387
Posted By drjrt

Best way to run ground conductor in a crawl space?

I'm doing work on my electrical system and am not happy with the way I ran the ground conductor through my crawlspace 25+ years ago so I want to redo it. It is grounding a panel on an interior wall...
08-26-19, 06:21 AM
Replies: 2
Views: 236
Posted By drjrt

How much romex sheath to expose in a panel pass through?

I have romex passing through one panel into another panel (they are connected through a metal nipple) where it will terminate at a breaker in the second panel. I believe at least 1/4" of sheath has...
08-19-19, 06:18 AM
Replies: 23
Views: 758
Posted By drjrt

Thanks. This box has a pass through lug that I...

Thanks. This box has a pass through lug that I assume is for Neutral but it is not insulated from the metal disconnect box.
The disconnect box is attached to the subpanel with a metal nipple.
I...
08-17-19, 01:16 PM
Replies: 23
Views: 758
Posted By drjrt

My disconnect switch (GE TNA60R1CP) doesn't have...

My disconnect switch (GE TNA60R1CP) doesn't have any type of a ground lug (just a neutral pass-through lug) so I bough a small lug bar that I will bolt to the case. I assume that would be acceptable.
08-17-19, 08:35 AM
Replies: 23
Views: 758
Posted By drjrt

I think the answer to the above is "yes" that I...

I think the answer to the above is "yes" that I need to bond the disconnect box to ground, but which ground, the supply side or subpanel side? And do I need to put a small lug bar into the box to...
08-16-19, 06:54 PM
Replies: 23
Views: 758
Posted By drjrt

Ok. I was wrong. Do I ground my disconnect?...

Ok. I was wrong.
Do I ground my disconnect? Iím using a 60amp AC unit box with lugs for the two hots and a neutral bar. Do I have to ground the box itself?
08-15-19, 05:39 PM
Replies: 23
Views: 758
Posted By drjrt

Well, I did my panel swap and install over the...

Well, I did my panel swap and install over the last two days. Had it inspected today by an elderly inspector whom seemed uninterested in engaging in discussions around bus capacity, why I was setting...
08-12-19, 06:47 AM
Replies: 14
Views: 614
Posted By drjrt

Thanks. Looks like I need to get with my solar...

Thanks. Looks like I need to get with my solar installer and review the wiring I currently have.
08-08-19, 08:52 AM
Replies: 23
Views: 758
Posted By drjrt

I've confirmed what I am planning on doing with...

I've confirmed what I am planning on doing with the inspector at the utility company who handles their solar installations. He approves my swapping out the disconnect with a new 200 amp outdoor...
08-08-19, 08:38 AM
Replies: 14
Views: 614
Posted By drjrt

My home installation is four (4) strings...

My home installation is four (4) strings consisting of thirteen (13) 330 watt panels utilizing Enphase microinverters.
Each string terminates in a 20amp DP breaker in (one of my) 200 amp house...
08-07-19, 03:17 PM
Replies: 14
Views: 614
Posted By drjrt

Yes it was installed by a Solar Install company. ...

Yes it was installed by a Solar Install company.
They use one electrician on all their projects.
I'm not sure how thorough the inspection was....
08-06-19, 09:03 PM
Replies: 14
Views: 614
Posted By drjrt

Yes, my example above was not accurate. I...

Yes, my example above was not accurate.
I checked and I have 350 amps of breakers on my 200 amp panel with up to 72 amps of solar input.
Some of these circuits supply high-amp devices like HVAC,...
08-06-19, 01:38 PM
Replies: 14
Views: 614
Posted By drjrt

The way I'm reading this is if I have a busbar...

The way I'm reading this is if I have a busbar rated at 200 amp (not sure as the panels are old) then they can handle up to 120% or 240 amps. If my solar is maximally generating 72 amp and have...
08-06-19, 01:32 PM
Replies: 14
Views: 614
Posted By drjrt

Yes, I'm grid tied. This is the NEC that I'm...

Yes, I'm grid tied. This is the NEC that I'm worried about:

NEC in the requirements in 705.12(B)(2),

[B][I]
08-06-19, 12:34 PM
Replies: 14
Views: 614
Posted By drjrt

Is my solar install legal?

Thanks to help on this site I have been learning about the effects of multiple input sources to a load center, specifically solar. I had solar put on my home about 6 months ago (a licensed...
08-04-19, 08:03 PM
Replies: 23
Views: 758
Posted By drjrt

Actually, I think I understand. The concern is...

Actually, I think I understand. The concern is exceeding the bus amperage capacity, not the breakers.
would a feed-through avoid that or still possibly exceeding the bus rating?

at this point, I...
08-02-19, 05:24 PM
Replies: 23
Views: 758
Posted By drjrt

Thanks for spending so much time on this. To...

Thanks for spending so much time on this.

To help me understand, you are saying that if (for instance) the Solar was generating 30amps and the subpanel was pulling 200amps that could create a...
08-02-19, 08:59 AM
Replies: 23
Views: 758
Posted By drjrt

Thanks for the lug part number - I hadn't found...

Thanks for the lug part number - I hadn't found that on my previous searches.
I was going to use the LK100AN for the 2/0 ground but that is only rated for 100amp so I guess I should use the LK225AN...
08-01-19, 07:39 PM
Replies: 23
Views: 758
Posted By drjrt

Yes, I've talked with the power company inspector...

Yes, I've talked with the power company inspector today who has agreed in principle with what I am planning.
He said he would come out, do my disconnect, check out what I am doing and reconnect when...
07-31-19, 09:40 AM
Replies: 23
Views: 758
Posted By drjrt

Thanks for the input. I think I am just...

Thanks for the input.

I think I am just going to try and replace the disconnect with a similar (physically) sized load center.
I am going to be dependent on the power company coming out to pull...
07-31-19, 03:50 AM
Replies: 23
Views: 758
Posted By drjrt

Convert a disconnect to panel?

About 25 years ago I built a solid log cabin with 200amp service. The load center is on an interior wall and there is a 200amp disconnect just below the meter outside (so the load center is really...
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