Question about Heating & Cooling

1 Answer

What wire size do I run for a 3 1/2 ton AC unit?

What wire size do I need to run for a 3 1/2 ton AC unit?

Posted by on

  • 1 more comment 
  • Dennis Boxerman May 11, 2010

    Code calls for wire size based on amperage of the unit and how far away from the incoming power source. You will not get an answer untill you supply that info. Don't forget that there needs to be a disconnect within a certain footage of the unit. You need to supply where you are located as some codes differ slightly.



    Hope this helps.

  • Jeff Meyer May 11, 2010

    It would be really helpful to know the make and model of your A/C unit. Is this a new unit or approximately how many years old is it?

    Some have the option of wiring in 220 volt from the breaker box to the condenser, which is always preferred if it can be provided. In the long run, providing 220 sill save you money on energy costs and the motor will run cooler.



  • Samuel Charles Spriggs May 11, 2010

    Which part of the A/C circuit are you asking about? There are different size wires/cables for different legs.

×

1 Answer

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    MVP:

    An expert that got 5 achievements.

    Governor:

    An expert whose answer got voted for 20 times.

    Hot-Shot:

    An expert who has answered 20 questions.

  • Expert
  • 116 Answers

It depends on the distance from main power source # 8 if more than 40 feet look at starting amps then google a wire sizing voltage droop chart

Posted on May 09, 2009

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

Wire size for a 2 ton gas pack


In door shod be #12 and out door shod be #10 if it is not that far from the box

Aug 23, 2012 | Rheem Packaged Gas And Electric Unit 13...

1 Answer

What wire size do I need to run for a 1.5 ton AC unit in 220 volt?


It will be good to have a 3sqmm wire for the power line but if the line is going to be longer then increase the size to the next level.
This is because the AC on start up draws about 10 amps intially. the present models have bettter star ratings are consume lesser but a good conductor will not drop the line voltage.

Sep 20, 2010 | Heating & Cooling

1 Answer

Can I mix brands/tons when installing AC unit to existing coils?


First off - the 'rule of thumb' is 600' per ton of Air Conditioning. In other words your old unit is a 2 ton unit. So - 2 tons x 600' = 1200'. As you can see if you install the 2.5 ton unit - you will be installing a AC that 'could' cool a 1500 sq ft house (2.5 x 600' =1500 sq ft.). Slightly more than what you need; and the 3.5 ton unit is 'way to big,' (3.5 x 600' = 2100 sq ft.).

Note: fyi - many in the AC business will sometimes refer to tonnage in btu's, i.e. 1 ton = 12000 btu - hence a '2 ton unit' can also be referred to as a 24000 btu unit and vice versa.

So... from the above - you can easily see that "2 tons" of Air conditioning is what is required to cool the 'average' home of 1100 sq ft. "roughly speaking."

Note: it is always best to have a professional 'size' your cooling/heating needs.

One of your questions was could you 'mix tonnage?'

The answer is 'usually you don't mix the tonnage of your outside/inside units.' However, professionals sometimes do (mix the tonnage) in certain situations, and installing a 2.5 ton outside unit with an existing 2 ton inside unit is often done, however, there are some 'tech issues' here and - I would "again" recommend that you call a Service Tech to help you with the sizing/mixing of your cooling/heating needs.

hope this has helped

Jun 20, 2010 | Carrier 38CKC036 Air Conditioner

1 Answer

How to identify the btu of rooftop AC unit


ANY # DIVISABLE BY 12. MODEL HAS  12-24-30-36-40-48-54-60 12 1 TON 24 2 TON 30 2 1/2 36  3 TON 36.00 BTU 40 3 1/2 48 4 TON 48.00 BTU 54  4 1/2 60 5 TON   60.000 BTU

Apr 21, 2010 | Dometic Rooftop RV Air Conditioner

1 Answer

Compressor size


Square footage is how you determine what size of an AC you need, say two bedroom house with 1500 square feet would require a 3 ton unit but I would go to a 4 or 5 ton depending on brand and what you may do in the future, Like adding a bedroom or bathroom and how many people will be living in the house, a heat pump normally last longer the bigger it is and is more efficient than a smaller size. Just think like this, a 3 ton will run 30 minutes to an hour longer to cool the same space as a 5 ton so if the five ton does it 30 minutes faster it will not run as long. And when it has to pull down the temperature again it will do it much faster. So less run time means faster heat or cooling and less energy is used. I have found that the bigger units are made better and last longer as a general rule. And to understand the 3-ton and 5 ton let me say that it means how long it takes 3 tons of ice to bring the temperature down 10 degrees, the old BTU’s British thermal units. However the bigger the unit the more well built it is normally and the less maintenance required. 5 tons of ice would get it cooler faster. But one thing to keep in mind a heat pump is only good for 20 degrees temperature range, for instance if the high range is 80 then the low side would be 60 in order for it to be efficient so if you have it set in the house at 72 degrees on the high side and low side would be 52 degrees. But the larger the unit the less time it would take it to recover from the heat differential.

Jul 22, 2009 | Ruud UAKA042 Air Conditioner

1 Answer

How to tell the size of my ac unit?\


thats a 5 ton ac unit

10AJA6001AH

basically 1 ton = 12,000 BTU

so 24 is 2
30 is 2 and a half
etc

Jun 21, 2009 | Weather King Heating & Cooling

1 Answer

Could I use wire size 14 for 1 1/2 ton air window


No sir,14 gauge,three conductor will carry only up to 15 amps,which is usually wired for lighting circuits.Look on the electrical requirement plate on the unit,usually located under the front panel cover.It will tell you how many amps are drawn when unit is operating.Using a three conductor cable;wire accordingly:#14--15amps----#12--20amps---#10--30amps----#8--50amps.These are the wire sizes and the current(amps)they will carry.Be safe! Gregg

Jun 11, 2009 | Heating & Cooling

1 Answer

What wire size do I need to run for a 1.5 ton AC unit in 220 volt?


Check the info plate on the unit,it will give you the electrical requirements for the unit while operating.Here are the wire sizes for different amperages.(copper conductors).#14--15Amps-----#12--20Amps-----#10--30Amps-----#8--50Amps.These are three conductor cables.Be safe! Gregg

Jun 11, 2009 | Heating & Cooling

1 Answer

Need to know unit size


ckl60 5 ton about a 2003 model on most ac heat pumps the model number reflects the ton sized by 12000 btus per ton also as for the indoor unit cfm rating 400 cfm per ton

May 14, 2009 | Goodman CKL60AR60 Air Conditioner

Not finding what you are looking for?
Heating & Cooling Logo

Related Topics:

1,423 people viewed this question

Ask a Question

Usually answered in minutes!

Top Heating & Cooling Experts

paulcarew

Level 3 Expert

2458 Answers

Dan Webster
Dan Webster

Level 3 Expert

8220 Answers

Donni Steen

Level 3 Expert

659 Answers

Are you a Heating and Cooling Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...