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Brand new furnace wont start its a aruf 14 electric air handler with a 10 amp heater coil

What size wire to use from breaker box to furnace and what size breaker for breaker box it keeps blowing the 3 amp fuse in it

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  • Goodman Master
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The 3 amp fuse protects low voltage side of transformer. if it's blowing on a call for cooling wire pair going to outside unit bad or contactor in outside unit.

Posted on Aug 11, 2015

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SOURCE: breaker tripping when furnace is on

check ground wires

Posted on Jan 05, 2009

cactus bob
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SOURCE: fuse blowing on tappan air handler

most of the time its out by the ac unit . you have a shorting thermostat wire .. the outside unit has a large wire thats 240v and a small one that 24v thats the one you want to look at . look for bare wires , look where it goes into the wall , thats the common place . "critters" love to chew thermostat wire . so take a look . .....please rate this answer , i need votes . thanks

Posted on Jan 24, 2009

  • 4736 Answers

SOURCE: What amp circuit breaker and

10/3 is fine, but you need 2 - 40 amp breakers on the same circuit to be safe. Anything below that is a risk.

Posted on Apr 21, 2011

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WHAT SIZE OF ELECTRICAL WIRE FROM AIR HANDLER TO BREAKER BOX


It depends on the distance and the amp rating of the blower motor and if it's 110v or 220. Probably I would use a minimum of 10 gauge, going bigger from there.

Sep 27, 2014 | York 4 Ton Air Handler - AVG48D3XH21

1 Answer

Heater not heating enough


Electric furnaces have strip heat inside of them. Depending on the model, size, etc, is how much heat the system can provide. Many times, if the system has worked in the past and started to have problems later, it's because you have lost half or more of your heat strips. They come in different sizes, 10kw, 15kw, 20kw, but ran on different contactors. So if you have a tripped breaker, faulty heat sequencer, etc, you can still have heat, but not the full amount. I strongly suggest any electrical related problems be look at by a qualified technician when dealing with air handlers. Hope this helps!

Dec 08, 2013 | Heating & Cooling

1 Answer

Wires to big to fit in new coleman furnace breaker


Go to Home Depot, get a wire splitter for each wire coming in (probably 2). Then run #10 to the 30 amp breakers or #4 wire to the 60 amp breakers. Harder to explain than to do. Basically, what they do is act like a "Y" branch for wires; the existing #2 wire goes under 1 screw lug, the new #10 & #4 go together under the other lug. Another solution that I do often is reuse the bus bar from the old furnace on the new furnace, properly wrapped in 10- 20 mil tape! Hope this helps! Last note: use NoLox on ALL the connections, as electric furnace lugs get hot and tend to losten over time, causing arking that destroys the lugs. Also, I'd bet your old wires are aluminum and your new wires are copper- another reeason for No-Lox!!!

Feb 22, 2013 | Coleman Mobile Modular Home Electric...

1 Answer

I have a new furnace and the breaker keeps tripping (20/30). It is a bryant westinghouse box. I think 200 amphes


1) You got a FIRE truck coming.

2) Wire is too small.
Problem is NOT circuit breaker.

3) Both 240Volt appliances on same breaker is a hazard, especially if space available in 200 amp service panel for more breakers.

4) Usually each 240V appliance has separate breaker.

5) Circuit breaker trips because of High heat on the wire.
If wire gets hot, it will start a fire inside the wall.

Electric code requires wire-size match breaker-size.

6) If you put larger amp breaker on same wire that is getting hot, then wire will get hotter.
Result: FIRE truck middle of night with folks jumping out window in glass-cut bare run across yard.

7) Each appliance has volts and watt rating on label.
EVERY appliance has label.

8) For example stove might be rated 8000 watts and 240Volt.
8000 watts divided by 240 volts = 33.3 amps
Stove would require 40 amp breaker and 8 gauge wire.

9) How to figure it out:
http://waterheatertimer.org/Color-codewire.html
http://waterheatertimer.org/How-to-install-a-subpanel.html

10) Do same calculation for new furnace.
12000 watt furnace divided by 240 volts = 50 amps.
Use 60 amp breaker and 6 gauge wire.

11) Summary: fixya wants you to be safe, and buy stuff showing in the ads.
Use a bigger breaker ONLY when bigger wire is also installed.
Call furnace installer, the installer should know to check safe wiring before installing.

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1 Answer

I just bought a used Carrier FV4BNB006 Air Handler without elec heat (just the air handler itself) . I pulled down the Installation instructions, but dang if I can find the right circuit breaker size to...


Hi, when you get the unit, it will tell you the Min. and max amps on the units data plate.They normally run in the 30 to 60 amp range depending on the tonnage of the air handler. What I would do, is run your lines now, and pick up a 60 amp disconnect box. You can use what ever size fuses in the box that the data plate says. Very easy to find out. Good Luck,
Shastalaker7
A/C, & Heating Contractor

Apr 01, 2011 | Heating & Cooling

1 Answer

Do you hhave a wireing picture or plan to wire the load center


Here are links that show basic wiring inside a breaker box.

Please look at the images.
If you need more help, answer back and we'll go to the next step

http://waterheatertimer.org/See-inside-main-breaker-box.html

http://waterheatertimer.org/240-v-water-heater-circuit.html
http://waterheatertimer.org/Circuit-breakers.html
http://waterheatertimer.org/Color-codewire2.html
http://waterheatertimer.org/Figure-Volts-Amps-Watts-for-water-heater.html

Breaker size:
15 amp breaker connects to 14 gauge wire
20 amp breaker connects to 12 gauge wire
30 amp breaker connects to 10 gauge wire
Home Depot and Lowes have a breaker and wire size size chart next to wire cutting machine
These stores have guys who know the basic breaker size for your big appliances
Each appliance has a name plate showing wattage and voltage.
The wattage tells you what size wire.
The voltage tells you what size breaker and whether you need a 120V breaker or 240V breaker.

To lay out your home wiring:
The kitchen microwave needs a 20Amp 120V 'dedicated' line that goes just to the microwave.
The rest of the kitchen plugs are served by another 20 amp 120V breaker
When laying out rest of house, figure how much wattage might be used in an area.
For example the den might have a big 500Watt TV, and 2 ceiling fans and 4 lights.
Add up the wattage and decide how many plugs and switches you want on each breaker.
Now let's say you have a 20Amp breaker which can carry 1920 Watts for the den.
Inside the breaker box you have a 12 gauge wire for the 20 Amp breaker.
The 12 gauge wire has a black, white and bare ground.
The black connects to breaker. The white and ground connect to Neutral busbar.
The 12 gauge wire leaves the breaker box and goes to the first box in the den.
This box is your junction box.
The junction box can be a switch box or a ceiling light box.
You cannot have any junction boxes that are covered by drywall.
Junction boxes must be accessible. All boxes must be accessible.
For example, you choose a ceiling box for your junction box.
The junction box is also the same box your ceiling light connect to.
From your junction box, you branch off a wire that goes to next box.
And then a wire branches off next box and goes to next box. And so on.

If you need more help, answer back and we can help.

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2 Answers

Fuse blowing on tappan air handler


most of the time its out by the ac unit . you have a shorting thermostat wire .. the outside unit has a large wire thats 240v and a small one that 24v thats the one you want to look at . look for bare wires , look where it goes into the wall , thats the common place . "critters" love to chew thermostat wire . so take a look . .....please rate this answer , i need votes . thanks

Jan 24, 2009 | Heating & Cooling

1 Answer

Electric furnace wire heating up


you should have a 3- conductor # 6-3 copper wire running to this 60 amp breaker @ the furnace to the panel if this is not the case you should replace this with a # 6 as of now as it is a fire hazard as it is and needs to be fixed at once , # 10 -2 wire is only good for 30 amps and a 60 amp breaker will not trip under fault condition and you could have a fire , if you need further assistance on this let me know and i will try to help

Jan 09, 2009 | Electric Circuit Breaker Kit for Furnace

1 Answer

Basboard heater installation


if the heater is 120 volt or 240 volt its really pretty easy. at either end is a cover. remove the cover and you'll see a wirenut or maybe just two wires. one side has an integral thermostat. connect your supply to the two wires on the thermostat. connect the other end in your breaker box with the appropriate sized circuit breaker. wire size feeding it will depend on its current draw. how many watts is the heater? 1500 watts will draw 6.25 amps at 240 volts so you can use 14 ga wire. 2000 watts will draw 8.3 at 240 volts - so 14 ga is still ok. 2500 watts at 240 draws 10.41 amps. 3000 watts draws 12.5 amps at this stage I'd use 12 gauge on a 20 amp breaker.

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