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-   -   Replacement of my old FP main with a new QO (http://www.diychatroom.com/f18/replacement-my-old-fp-main-new-qo-133958/)

Big N8 02-16-2012 01:13 PM

Replacement of my old FP main with a new QO
 
Hi all. I am going to be replacing my old Federal Pacific (150amp) main panel with a new Square D QO (200amp) 40-30 (able to take 10 double poles) model QO13040M200C.

Not my first wiring job But it is my first job that will require an in depth inspection. Other stuff I have done is add branch circuits to panels including 50 ranger and 30 amp A/C runs. All of those had inspections and passed with now issues.

I am just going to list what I will be doing and would like feedback on things that could be missing or stuff that inspectors really look at for correctness.

(I will be making a very detailed wire diagram with paper and pencil)

1. Get permits from the city
2. Label in detail the wiring going into the old panel
3. Call utility company for a meter removal
4. Pull all wires from old panel
5. Pull panel off plywood
6. Replace the 1AWG feeders with 2/0 feeders (copper, only needs to be four feet long from service to panel)
7. Upgrade ground wires to 4 awg bonded three time to water pipe with another ground to a rod protected with just one bond.
8. Install new panel on plywood same location
9. Pull feeders and pull circuits one at a time keeping the load even across the panel
10. Leave power off until I get inspection
11. Pass inspection and call utility to plug in meter and restore power

When I pull all the wires back into the new panel I will make sure to bond all the grounds tight and to add enough breakers to make up for one that has two conductors under it now. I will also check so I don’t put the wrong size breaker on for the wire size. 14/2 gets 15 amps 12/2 gets 20 amp a/c 10/3 will get the 30 amp and 6 will get the 50 amp.

Please fill me in on places I may need to spend more time or things that are left out.


N8

I will be updating my list as we go so keep that in mind.

Missouri Bound 02-16-2012 01:28 PM

You mention 14/3 and 12/3 circuits....are these MWBC's? If so you will need to use dbl. pole breakers there. Anything you miss, the inspector will be happy to tell you so:laughing:

Big N8 02-16-2012 01:34 PM

sorry typo there they have a load neutral and ground so that would be 12/2. My bad.

Missouri Bound 02-16-2012 01:37 PM

Quote:

Originally Posted by Big N8 (Post 855103)
sorry typo there they have a load neutral and ground so that would be 12/2. My bad.

No Problem...your all set.:thumbsup: How old is the panel you are replacing? Is your ground adequate for a new installation? Some codes may have changed since the original and you will have to bring the installation up to current codes. Again the inspector will be sure to let you know this.

joecaption 02-16-2012 01:57 PM

Should he also use AFIC breakers in the bedrooms?

Missouri Bound 02-16-2012 01:59 PM

Quote:

Originally Posted by joecaption (Post 855120)
Should he also use AFIC breakers in the bedrooms?

Possibly. It depends on which code his state / township is on. Again the inspecter or AHJ can let him know when he gets permits.:whistling2:

rrolleston 02-16-2012 02:02 PM

What size wire is the service drop going from the companies connection to your meter. Is it sized large enough to supply 200 amps

Jim Port 02-16-2012 02:19 PM

The wiring from the weatherhead to the meter socket will also need to be upgraded.

Grounding and bonding will probably also require upgrades.

I did not see when anything was said about a bond screw or strap.

rrolleston 02-16-2012 02:27 PM

Better also check your meter socket. I hate 150 amp electric service. Sounds like whole new service is going to be needed to me

Big N8 02-16-2012 02:46 PM

Just got off the phone with the utility company. They informed me that all underground service (I have underground) would be rated to a minimum of 200amps. So that is good to go.

As for the ground I have two locations now one to the copper water pipe one to a ground rod outside. From what I have found I would need to have at least a 4 awg wire for ground to both locations with at least three straps to the water pipe. the outside ground would only need to have one but it would need to be protected.

Anything with what i am saying sounds funny off wrong please tell me.

Julius793 02-16-2012 02:53 PM

Quote:

Originally Posted by Big N8
Just got off the phone with the utility company. They informed me that all underground service (I have underground) would be rated to a minimum of 200amps. So that is good to go.

As for the ground I have two locations now one to the copper water pipe one to a ground rod outside. From what I have found I would need to have at least a 4 awg wire for ground to both locations with at least three straps to the water pipe. the outside ground would only need to have one but it would need to be protected.

Anything with what i am saying sounds funny off wrong please tell me.

Whats the deal with three straps? Also 6 AWG cu is good enough for your ground rod.

Big N8 02-16-2012 02:59 PM

I just found a local code from about ten years ago for my city and that is what is said. Maybe a trip to city hall and a conversion with the inspector will be needed?

KStatefan 02-16-2012 03:54 PM

Quote:

Originally Posted by joecaption (Post 855120)
Should he also use AFIC breakers in the bedrooms?

Depending on what year of code it will be more than just bedrooms.


210.12 Arc-Fault Circuit-Interrupter Protection.
(A) Dwelling Units. All 120-volt, single phase, 15- and
20-ampere branch circuits supplying outlets installed in
dwelling unit family rooms, dining rooms, living rooms,
parlors, libraries, dens, bedrooms, sunrooms, recreation
rooms, closets, hallways, or similar rooms or areas shall
be protected by a listed arc-fault circuit interrupter,
combination-type, installed to provide protection of the
branch circuit.

Speedy Petey 02-16-2012 03:59 PM

Quote:

Originally Posted by KStatefan (Post 855246)
Depending on what year of code it will be more than just bedrooms.

In general, with few exceptions, AFCI breakers are NOT required for a service upgrade or panel change.

rrolleston 02-16-2012 04:04 PM

Some reason here they require a #4 ground wire and that goes from the panel to both rods and then returns to the panel I just checked the document from the POCO and that is what they require. It's strange how much everything varies depending on where you live.


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