Search: Posts Made By: zootjeff
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01-18-15, 10:22 PM
Replies: 7
Views: 753
Posted By zootjeff

How is that? I'm in Portland Or in...

How is that? I'm in Portland Or in unincorporated Washington County..
01-18-15, 08:22 AM
Replies: 7
Views: 753
Posted By zootjeff

Waterproof knock out tie down for meter main

I'm putting in a new outdoor meter main and I'm going to run #6 bare copper to the grounding system. What is the best way to come out of the steel panel? Do they make waterproof 1/2 knock out clamps...
01-02-15, 10:54 AM
Replies: 30
Views: 3,744
Posted By zootjeff

If messing with the main breaker is "frowned...

If messing with the main breaker is "frowned upon". What about pulling the 200 amp ganged breaker and putting in a 90-amp 2-pole in its place, I'd have to cap the two empty spaces, and still cap the...
01-02-15, 10:50 AM
Replies: 30
Views: 3,744
Posted By zootjeff

I've run this idea by the utility and they said,...

I've run this idea by the utility and they said, "I don't know, ask your county inspector". I've been trying to reach both the lead and assigned inspector for days, but apparently while I'm off on...
01-01-15, 08:10 PM
Replies: 30
Views: 3,744
Posted By zootjeff

It really looks like the 200 amp breaker is...

It really looks like the 200 amp breaker is constructed of two, 2-pole 100amp breakers. There is an air gap between them. The sticker spans all of them and makes it look like a single breaker. It...
01-01-15, 11:01 AM
Replies: 30
Views: 3,744
Posted By zootjeff

I have been working with the power company and...

I have been working with the power company and they assigned a designer to me. He said that if I am to increase my load significantly I will need to hire a horizontal boring contractor to put in a...
01-01-15, 07:30 AM
Replies: 30
Views: 3,744
Posted By zootjeff

I just did a load test of my existing house. ...

I just did a load test of my existing house.

I measured the voltage at the panel in the morning with everyone but myself asleep. I measured the 240v lugs at my breaker panel. It is 170ft from the...
01-01-15, 06:03 AM
Replies: 30
Views: 3,744
Posted By zootjeff

I wonder how much the wire can tolerate in the...

I wonder how much the wire can tolerate in the dirt. At 200 amps that is 17v of drop over 170 ft of #2 al wire that is about 20watts per foot of pair dumped into the air or ground..
With 4/0 it...
12-31-14, 08:50 PM
Replies: 30
Views: 3,744
Posted By zootjeff

I thought the NEC specifies #2 Al for 100 amps at...

I thought the NEC specifies #2 Al for 100 amps at 90c rise. Are you saying the power company doesn't have to abide by this particular guideline? Won't the wire overheat if you pull 200 amps and melt...
12-31-14, 08:32 PM
Replies: 30
Views: 3,744
Posted By zootjeff

Here is a picture attached. 44127 No...

Here is a picture attached. 44127

No "modification" Simply pull (and cap) one red and one black wire. Instant 100 amp service..
12-31-14, 07:43 PM
Replies: 30
Views: 3,744
Posted By zootjeff

The combo meter main MC0816B1200ESN has 4 ganged...

The combo meter main MC0816B1200ESN has 4 ganged 100 amp breakers. This is back feeding the bus bar that feeds the 4/0 SER to the new breaker panel.. See the pictures at the start of this post.. If...
12-31-14, 06:03 PM
Replies: 30
Views: 3,744
Posted By zootjeff

Can I take my ganged 4space 200 amp disconnect...

Can I take my ganged 4space 200 amp disconnect and remove two of the feeder wires from the meter to make it a 100amp breaker? This would be until the feeders are updated..
12-30-14, 11:51 PM
Replies: 30
Views: 3,744
Posted By zootjeff

What are my options for connecting main breaker...

What are my options for connecting main breaker with a 100 amp service?

There is basically #2 AL wire feeding the meter base.

My disconnect has 4 ganged 100A breakers for the disconnect at the...
12-19-14, 03:39 PM
Replies: 10
Views: 2,296
Posted By zootjeff

This is what it would look like on a test stud...

This is what it would look like on a test stud with two 7/8" spade holes.. Yes, the wall is partially load bearing, it supports a floor above it but not a wall or roof. I've cut into the floor above...
12-19-14, 02:50 PM
Replies: 10
Views: 2,296
Posted By zootjeff

I'm pretty sure I can align the hole in the stud...

I'm pretty sure I can align the hole in the stud to get the cable to route through the two holes shown in the picture.. Will it fail an inspection if I do this? I think this will be easier than...
12-19-14, 02:43 PM
Replies: 10
Views: 2,296
Posted By zootjeff

Here are the pictures of the old and new panel,...

Here are the pictures of the old and new panel, the old panel is tiny and the new panel has some access knockouts on the side near the bottom that I wanted to use. There is a 14-2 and an 8-2 that I...
12-19-14, 02:34 PM
Replies: 10
Views: 2,296
Posted By zootjeff

I am upgrading a panel and will not have enough...

I am upgrading a panel and will not have enough existing cable length to route to the top or bottom. There are knock-outs at the bottom on the side that are mostly at the bottom so I was going to use...
12-19-14, 01:58 PM
Replies: 10
Views: 2,296
Posted By zootjeff

Breaker Panel 1/2 knock-out retention options

Is it OK to use the non-metallic style cable connectors inside a breaker panel rather than the metal clamp down type for securing 14-2, 12-2, etc..
...
11-30-14, 03:59 PM
Replies: 17
Views: 17,189
Posted By zootjeff

So is it #2 AWG or is it 2/0? I can't seem to...

So is it #2 AWG or is it 2/0? I can't seem to find SER cable that has 4/0-4/0-4/0-#2. It looks like it is all 4/0-4/0-4/0-2/0. Is that right?

Table 250.66 of the 2014 NEC seems to indicate that I...
11-30-14, 03:19 PM
Replies: 17
Views: 17,189
Posted By zootjeff

Breaker Panel: Siemens-P4040B1200CU Meter...

Breaker Panel: Siemens-P4040B1200CU
Meter Main:Siemens-MC0816B1200ESN
11-30-14, 03:13 PM
Replies: 17
Views: 17,189
Posted By zootjeff

Here is the updated drawing with dual ground...

Here is the updated drawing with dual ground rods, and optimal ground bus-bar usage for the breaker panel
42542

The 50kB image limit sucks, here is a close-up:

42543
11-30-14, 02:56 PM
Replies: 17
Views: 17,189
Posted By zootjeff

So you are saying I should use both isolated bus...

So you are saying I should use both isolated bus bars (over the black plastic) for Neutral, and not bond either of them to the panel, and have the stranded ground cable from the SER cable attach to...
11-30-14, 02:47 PM
Replies: 17
Views: 17,189
Posted By zootjeff

Is this the SER wire you are talking about...

Is this the SER wire you are talking about between the Meter Main and the Breaker Panel?

http://platt.com/pl/4A3SERGX500

This is (3 insulated) 4/0 and (1 bare stranded) 2/0.

Am I correct...
11-30-14, 02:09 PM
Replies: 17
Views: 17,189
Posted By zootjeff

42528 Here is what I'm proposing. Do I need...

42528

Here is what I'm proposing. Do I need a separate ground connection to the Breaker Panel (which would create a ground loop) or is the ground in the wire bundle sufficient for grounding the...
11-30-14, 10:20 AM
Replies: 17
Views: 17,189
Posted By zootjeff

Grounding rod conductor dimensions for 200amp service

Hi,

I'm trying to understand Section 250.66 of the NEC 2014 (National Electrical Code) document for how to connect the ground of an electrical service to the electrode system.

So basically it...
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