Question about Your One Source Homeline Load Center, 200 Amp

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Subpanel hookup I have a 125 amp Q0 Load Center to use as a 30 amp subpanel Should I use a smaller main breaker than the recommended 125 A?

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Yes the maximum size branch circuit breaker that will fit in a residential load center is 100 amps. I would recommend that you calculate the amount of power that you need the sub panel to handle, then add any additional loads you may need in the future. Hopefully this is less than 100 amps. I would recommend that you check with your local electrical inspector to make sure your installation meets all local and national codes before proceeding with the install.

Posted on Jan 01, 2009

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Electical panel


1) Add a subpanel using extra breaker space:
http://waterheatertimer.org/How-to-install-a-subpanel.html

2) Choose correct wire and breaker.
Increase to next larger size for distances over 100 feet from breaker.
http://waterheatertimer.org/Color-codewire.html

3) Calculate total load on main breaker to make sure service panel is large enough for amp draw:
http://waterheatertimer.org/Troubleshoot-household-electricity.html#stress

4) Add a comment

Feb 11, 2013 | Circuit Breakers & Wiring Panels

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I have a 125 FPE box currently the combined total of all breakers presently in the box is 190 amps. I am wanting to replace a single pole 20 with a single pole 40. Am I already maxed out or do I have room...


You can add the breaker.
The key is total electric use.
As long as total consumption does not exceed amps shown on main breaker, then the new 40A breaker installation is ok.
If total consumption exceeds main breaker, then the main breaker will start to get hot and then trip.
http://waterheatertimer.org/How-to-install-a-subpanel.html

Put hand on main breaker and feel for warmth.
The main should not feel warm.
Consider upgrading to 150A or 200A service.

Aug 22, 2011 | Connecticut Electric UBIF040N FPE...

1 Answer

1 question can Cutler Hammer breakers have the amperage feed through the breakers. To the breaker box and from the box grid to the load. Does it matter which way the amperage is fed through the breaker?...


There seem to be several questions mingled in with those 2 questions.

1) Amps can go either way

2) Breakers trip when heat exceeds certain level. Heat is caused by amps.

3) You want to add a subpanel in garage.
I do not know the code in your area for installing a subpanel.
Your plan will work by connecting 6 gauge wire to main breaker, and new 60 amp breaker will protect wires between main box and subpanel.
Remember, wires going into main breaker cannot be turned off without pulling meter.
Some areas require license to pull meter.
http://waterheatertimer.org/How-to-replace-circuit-breaker.html

4) To work around license and meter-pull, simply replace a 240V breaker in main panel with your new 60 amp breaker.
Then move breakers around to match new set-up.
New subpanel can accommodate two new 240V breakers and one new 120 Breaker
http://waterheatertimer.org/How-to-install-a-subpanel.html

5) 6 gauge wire is correct for 60 amp breaker.

6) I'm not sure what you mean by the box rails?

7) Do you need more amperage on main service?
This means adding a larger service panel with 150 Watt or 200 Watt main breaker.
Some areas require service upgrade when remodeling or adding circuits.

8) How to figure total amp draw at your house.
Add up total watts being used.
For example you have 1/2 Hp motor
754 watts per Hp
1/2 Hp = 377Watts
Volts x Amps = Watts
Amps = Watts divided by Volts.
377 Watts divided by 240Volts = 1.57 amps (plus a bit more amperage when motor starts)
40 watt light bulb divided by 120Volts = .33 amps
Double oven has label located inside door that shows upper and lower wattage.
Dishwasher, dryer, big screen TV, satellite receiver all have labels that show wattage.
Water heater has label that shows wattage of each element.
http://waterheatertimer.org/Figure-Volts-Amps-Watts-for-water-heater.html
http://waterheatertimer.org/See-inside-main-breaker-box.html

Add a comment for more help

Feb 18, 2011 | Cutler Hammer 100 Amp Main Breaker...

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Major cirsuit breaker blew and partial loss of power in residential home ...is bus port still good? Looks good. replaced breaker and working again..will this last?


1) If busbar looks good it probably is good.
Usually when bus is bad, it has burned appearance, and looks like it is ready to crumble or is crumbling.

2) Problem with bad busbar, we sometimes add subpanel next to main box.
Buy subpanel box Home center or electric supply.
Square-D subpanel shown on following page came from electric supply.
http://waterheatertimer.org/How-to-install-a-subpanel.html

3) You can also add tandem breaker to main box.
Tandem breaker fits over one bus finger, but is actually two separate breakers.
Then double-up two lightly used circuits so you have room to move breakers around.
See image showing tandem.
http://waterheatertimer.org/images/ap-235-breakers.jpg

Add a comment for more free help.
Also take advantage of fixya expert assistance live.
For a price, expert works with you via e-mail while you work on circuit or any do-it-yourself project.
Fixya is always less expensive than a service call.

Feb 16, 2011 | Electric General Ted134050 50a 480v...

2 Answers

How do I run from a 100 amp main panel to a 60 amp subpanel, 125 from my house to the garage


See 60 Amp sub-panel image

Above image shows drawing of 60Amp sub-panel located next to main panel. Drawing shows #6 wire... 125' distance to garage calls for #4 wire. I ran #4 to my barn and have no problems.

Give thought to how many new breakers you want at garage.
See photo of subpanel that holds three 240V breakers

Using drawing as a guide. Replace existing 240Volt breaker with new 60 Amp breaker. Two hot wires connect to new 60 Amp breaker. Neutral connects to neutral busbar.

More space: You can free up space in main breaker box using a tandem breaker. Or by doubling up 2 lightly used 120V circuits onto one breaker. Do not double-up on 240 Breakers

Conduit: You want PVC conduit large enough to fit three #4 wires. Bigger conduit is easier to pull wires ... and maybe later ethernet wire, or alarm wire etc.

Ground wire: You can put a ground rod at garage and run #6 bare copper between sub-panel neutral-busbar and ground rod. Attach ground wire firmly with grounding clamp.

I want you to check with local electrical supply for exact code in your area concerning conduit requirements, grounding, and wire size. Tighten all lugs very tight against wire.

Oct 03, 2010 | Siemens 100 Amp Main Breaker Renovation...

1 Answer

Pole barn subpanel has suddenly dropped half of circuits


Problem solved. I disconnected both ends of the feeder line to the barn and tested continuity by alternately hooking two wires together at a time and using an ohm meter on the other ends. The result of the testing was that the majority of the wires in the run were making contact with each other to varying degrees. We have seen a lot of rain this spring, so I assumed there was a break in the line that had gotten wet down in the ground. We had some work done last fall where they may have distrubed the line, so I dug around that area first and luckily found a splice that had been very poorly sealed against the elements. Got it dried out and everything returned to normal. I used layers of liquid electrical tape and heavy water proof tape to insulate and seal the repaired line prior to putting it back into its wet environment and back filling.

May 13, 2009 | Circuit Breakers & Wiring Panels

1 Answer

Subpanel


the only way unless the existing wiring is long enough or can be re-routed to the new sub is to use junction boxes with covers and wire nut to connect the wires ( make sure that the wire is the same as the wire you are connecting to and install breakers to accommodate the amperage rating of the wire examples are # 12-20 amp, #14-15 amps , # 10-30 amps # 6 50 amps do not put any 220 volt and 120 volt in the same junction box and no low voltage wire in with 120 or 220 volt wires , if you will need to splice the range wire or any wire larger than #10 i would recommend replacing with new wire if this is not possible then use only connectors approved for the wire to be used .good wiring !

Dec 17, 2008 | Pacific International Federal Pacific...

1 Answer

Subpanel wiring


You need to run the appropriate size wire from the main panel to the new sub panel. I would recommend getting a electrical contractor to do this for you.

Dec 16, 2008 | Pacific International Federal Pacific...

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