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Re: Load calculation and size of wires
A lot of your questions also have distance that need to be factored in. Copper is way better than aluminum. but in large wires it may be too expensive, also some suppliers only carry aluminum in the largest sizes. If you are doing a lot of electrical, then you need to learn "ohms law." Also most appliances have the amp load printed on them on the I.D. label.
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Look at the data plate on the unit, You need the LRA locked rotor amps, and RLA run load amps It will also show max fuse size and min fuse size. A 3-4 ton unit should run on the gen, but starting is my question, this can be 3-7 times run load amps.
What size is the heat pump and how many amps does it draw on full load amps. There should be a label on the unit that states "FLA" and/or "LRA." That is important because it determines the size of the wire you need as well as the size of the conduit. You would use a gfci breaker and the neutral wire plus a ground.
This needs to be done correctly, because water and electricity do not mix well when people are near it. Let me know.
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
Hello, in order to have air conditioning you need a evaporator coil, a outdoor condensing unit , a line set that connects the two to each other. You will have to have a cooling load calculation done so you know what size air conditioner you need for your home, also you will need to bring power to the outside unit from the main electrical panel in your house. Let me know if you have any other questions.
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
Let me try to send you to a quick fast electrical course on wiring size vrs amp draw it can carry before it burns into. The breaker box can send out the rated amps the wire comming into the box its sized for. (example. #3 can carry 10 amps) then it is distributed thru breaker thru the wires to the loads amp draw. depends on the maxium rated amp draw of the load, the wire can carry a certain amount of heat or amps. Ceck the max. rated amps or heat draw it can carry to size your wires & breaker,! thank you very much!