Question about Your One Source 100 Amp Main Lug Load Center

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Can i replace the main (100 amp) is a sq d QOC20u100F panel with a 200 amp main--i will up grade meter socket and entrance cable to 200 amps cwalker

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First the part number QOC20U100F is a flush mount panel cover. The panel you have is most likely a :QO116M100. No you cannot replace the breaker as the bus in the panel is only rated for 100A. In addition I believe this is a 20CKT panel. If you're gonig to a 200A service you'd probably want more spaces than that. Home Depot and Lowes both carry 200A panels with starter set of breakers at reasonable price. The QO panels are a bit better than the Homeline
Here is a link to manual for their panels. :
http://static.schneider-electric.us/assets/DIGEST/load-centers.pdf

Posted on Aug 24, 2010

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Can i use 3 ott 4 wire mc for a 200 amp service indoors


No problem but you can use a smaller diameter wire either copper or aluminum to support a 200 amp entrance. I have included a few links to help. Typically aluminum wire is a gauge larger (lower number) then Copper.

Thread What wire type is acceptable by NEC Code For Service Entrance

Can use 3 ott 4 wire mc for 200 amp service indoors

What size wire is required for 200 amp service



What is the wire size for 200 amp service

Dec 08, 2016 | Electrical Supplies

1 Answer

I recently had new service installed. 200 amp load center at the top of my stairs, and a QOM2E2200NRB 200 amp enclosed breaker next to the meter socket. Idiot electrician bonded the neutral in the load...


Problem is not clear.
You have 200 Amp cut off by meter, with 3 wires from meter box:
2 Hot wires and a ground.
http://waterheatertimer.org/See-inside-main-breaker-box.html

You have 200 amp service panel.
Does the ground wire enter service panel from cut off box?

Feb 24, 2013 | Electrical Supplies

1 Answer

What is the grounding requirements for a residential home?


Depending on your locality, these requirements may differ from what is specified by the National Electrical Code (NEC or "code"). The NEC is commonly regarded as the minimum requirements for electrical installations, and many states adopt it without modification as their requirements, too. Still others modify it and some counties and towns further modify the code. It is for these reasons, you should consult your local code enforcement office to learn what the authority having jurisdiction (AHJ) wants to see when (s)he inspects the work.

Typically, an 8' grounding electrode (or ground rod) is driven into the ground and an approved clamp is used to secure an unspliced grounding electrode conductor to the neutral bar in the meter socket or service entrance equipment. The size of this conductor is based on the service entrance (SE) conductors. Typical sizes are when:

100 amp SE conductors are #4 copper (CU) or #2 aluminum (AL), requires a #8 CU or #6 AL grounding electrode conductor.

150 amp SE conductors that are #1 CU or 2/0 AL require a #6 CU or #4 AL grounding electrode conductor.

200 amp SE conductors that are 2/0 or 3/0 CU or 4/0 or 250 AL require a #4 CU or #2 AL grounding electrode conductor.

You may be required to provide a secondary grounding electrode if you can not provide data supporting minimum soil resistivity to the AHJ.

Lastly, bonding of the residence's cold water pipes is required. A #8 is used for 100 amp services and #6 for up to 200 amp services. If on a public water supply, the bonding conductor must be connected on the street side of the meter and the house side of the meter (should the meter be removed there will be no voltage present to injure the person removing the meter) to the grounding electrode conductor termination bar in the meter socket or ground bar in the service entrance equipment. Installation and connection of an IBT (Intersystem Bonding Terminal) is required for telephone, cable TV, etc. You may need to bond gas piping and metal duct work., and some locations specifically prohibit bonding one or more of these items.

The short of this is you must determine the requirements of your locality. The AHJ can tell what they are - but will probably not tell you how to do it.

I hope this was helpful.

Feb 23, 2012 | Hammering

1 Answer

Replace 200 amp breaker


If this is the Service Disconnect Switch or Main Switch for the panel, this job should probably left for an electrician to perform, as power should be shut off at the meter socket or at the roadside first. If this is not done, the work will be "hot".

Unlike most circuit breakers in electrical panels, Service Disconnect Switches and Main Switches have the power brought to the panel by entering terminal screws. Shutting the Main or Service Disconnect breaker off prevents the flow of current *into* the panel and other circuit breakers. The large wires that are connected to the terminal screws are LIVE, and will remain so until shut off *upstream*.

Working in a panel with two large diameter cables that do not move easily is a hazard and should not be done unless you are very familiar with this work - and of course, have shut the power off.

Please, reconsider doing this work yourself.

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1 Answer

Amps needed to run a central air unit


Central air requires a 2 pole 30 amp breaker or fuse. You may be able to get by without it but 200 amp service is recommended.

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1 Answer

My 200 amp Siemens main electric box is heating


This is a dangerous situation! There is a short in the furnace. It is NOT a breaker problem! You need to check the current draw in the furnace circuit, This requires an Amprobe meter. If you don't have one, contact a technician at once! You have a fire hazard!

Ray

Dec 15, 2008 | Fahrenheat LFP6152 Halogen Baseboard...

1 Answer

Two circuits in panel inoperative


not likely check the neutrals on those circuits the chance that 7&19 are bad and everthing in between is good is almost impossible. i would check the wires very close and also inspect the neutral buss connections both main connections and circuit connections

Dec 09, 2008 | Your One Source 100 Amp Main Lug Load...

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