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Electrical can I run a 125amp sub pannel off the quick conect for a garage adition .Ihave a200 amp servias if yes what size wire to run about 50 feet

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I am sure local code will not allow this. It needs to be hard wired from a disconnect (fusable).

Thanks
Zerko

Posted on Aug 30, 2008

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5000 watt inverter schematics circuit


If you have (90) 50w lamps = 4500 watts total. Assuming a 120/240 panel, if you put 1/2 on one "side" of the panel and the other 1/2 on the other "side" of the panel, that would be 2250 watts on each half. The generator should be rated *at least* 125% of the load; 4500w x 1.25 = 5625W. Using a 4500W generator on this load will cause it to overheat and shorten its life as it is running at 100% of capacity all the time..

One half of the panel is 120V to neutral, and the other is 120V to neutral - or 240V between both circuit breaker terminals. Ohms law for DC circuits and purely resistive AC circuits says Volts x Amps = Watts; or Watts / Volts = Amps. So, 2250W / 120V = 18.75A on each pole of a 2 pole circuit breaker that feeds the sub panel. A #12 copper wire is rated for 20 amps; but as per National Electrical Code - must be de-rated to 80% of rating which means it is good up to 16 amps maximum. A #10 copper wire is rated for 30 amps, but it too must be derated to 80%, making it good for 24 amps maximum. So, if you are going to feed a sub panel supplying (90) 50watt lamps, you will need to run a #10/3 copper cable from a two pole 30 amp circuit breaker at the generator to a 120/240 volt "main lug only" sub panel rated for at least 30 amps.

Divide your load evenly across the sub panel - (4) 15 amps circuits via (2) two pole 15 amp circuit breakers on each "side" of the panel if you run (2) 14/3 cables out to the lights - or (4) single pole 15 amp circuit breakers if you run (4) 14/2 cables out to the lights. No circuit breaker terminal should have more than 23 lamps that means you have (2) w/ 22 lamps and (2) with 23 lamps. The circuit w/ 23 lamps will draw 23 lamps x 50w = 1150W. 1150W / 120V = 9.6A. The 22 lamp load will be 22 x 50w = 1100W. 110W / 120V = 9.2A. Which is well within the 12A maximum allowed (after derating as required by code) by a #14 copper wire rated for 15A.

Good luck!

Mar 10, 2014 | Circuit Breakers & Wiring Panels

1 Answer

Dedicated 20 amp outlet


Ideally you should run the line straight from the circuit breaker out to your hot tub, but if the line running from your circuit breaker to the box you're using now is 20amp. you can absolutely connected to that. to be up to code it cannot be an open box it needs to be closed After you wire in your 70ft connection. (that's assuming the box that you're using is dedicated already to your hot tub) then the only difference would be is your using extra line and costing you tenths of a penny extra and electricity per hour.

Jul 27, 2013 | Circuit Breakers & Wiring Panels

1 Answer

Can you splice 2224 wire to sub panel


The short answer is: Yes, you can. But, read the rest of this first.

Usually, you would want to move other smaller ampacity breakers up / down / over / as needed to create the required space for the larger ampacity feeder breaker to reach the feeder wires that supply power to the sub-panel. This is preferable because these circuit have small amp loads (hence small wires) and it is easier to splice those wires with simple wirenuts instead of splicing the feeders.

I can't see your installation, and you didn't give a great deal of details - so this last part may not apply to you. If you must splice the feeders, make sure it is an electrical box - if not done in the panel itself, a junction box that is approved for the location type, size and number of conductors that enter and leave the box can be used.

Good luck!

Nov 17, 2012 | Circuit Breakers & Wiring Panels

1 Answer

I have a machine required 125 amp and the current circuit breaker is 95


You will not only need to change the circuit breaker but you will also most likely have to change the wire size running from your machine/disconnect/receptacle. For 125 amps you will need at least 2AWG copper wire

Apr 08, 2011 | Square D Qda32125 3pole 125amp 240v...

1 Answer

40 amp gfi on hot tub keeps tripping.I have a 50 amp.can I use?


Your hot tub needs GFI protection because it is electrical, and people sit inside water that could be exposed to electric current.
You have a fault to ground that needs to be fixed.

Size 8 wire for 50Amp breaker.
Size 6 if tub is 50-100' feet away
http://waterheatertimer.org/Color-codewire.html

Nov 09, 2010 | Spa Parts Plus GFCI, Circuit Breaker, 40...

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

Ground rod placement


If this is a Sub pannel that is fed from a main pannel then you don't need a ground rod for it, but you do need to run a ground wire in the cable that feeds it. So if it is fed by a 220 volt breaker in the main pannel it needs both hot wires, a neutral, and a ground wire in the cable.
Also when you get to the pannel do not attach the ground bonding jumper to the neutral bus in the sub pannel. each of the 4 wires will be seperated at the sub pannel.
Presto.

Aug 24, 2009 | Circuit Breakers & Wiring Panels

1 Answer

I have a 200amp main with a 150amp sub panel and I'm not sure of the wire size I would need for an 80 foot run. With the multiple answers I got confused. I was told 2/3 w/ground, 2/0, 2awg or #2. Also, I...


All of the answers you got were all for the same product, it's just being said differently. 2/0 is the correct wire size. I think this question may be old, so you may have already completed your project. By the way, with copper, the voltage drop on an 80 ' run is 0.8 %. On aluminum it is 1.56%.

At any rate, a 150 amp sub-panel with 20 circuits running on a 200 main amp can easily be overloaded. You should probably have a 300 or 400 amp main with a subpanel that large.

May 13, 2009 | Circuit Breakers & Wiring Panels

1 Answer

Subpanel hookup


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.

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