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Basic electrical diagrams

Does anyone know where i can obtain a diagram for basic electrical for 110v,220v at the main breaker, and also main breaker to disconnect box(exterior), and also the 220v stepdown to 110v at the disconnect box. this is mainly for installing a/c split units. or could someone step me through this.

thanks dave

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LOWES DEPARTMENT STORES-- HOME DEPOT!

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What do i have to do to plug my 110 air conditioner into where my 220 window unit


You need a step down transformer, to convert 220V to 110V. You can't just plug the 110V A/C unit in directly unless it is clearly marked as being suitable for multi-voltage supply (110V - 220V input).

Such a transformer has to be of sufficient capacity to handle the current, or wattage, that will be required. The Frigidaire unit in your question is a 3.5 kW cooling capacity, so the transformer would need to be about the same, ie for a 10A supply at least. They are quite big boxes, about $120.

http://welectronics.com/TRANSFORMERS/step-up-down.JPG

You would put this in the roof or in a cupboard.

Apr 25, 2015 | Frigidaire FAC126P1 wall/window Air...

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What can I troubleshoot to determine why my RV Rooftop Heatpump does not work on generator, only shore power?


There are a couple of possible causes:

1. There is a Front/Rear Switch somewhere in the unit, usually in the main salon or near the breaker box. This is most common if your generator is not large enough to run 2 units at the same time. It is not always labeled as such, sometimes it's just 1 or 2 and in others it's a set of breakers.

2. You have dropped a leg from the generator output. Normally the generator has 2 outputs, each feeding a separate circuit. This could be in the generator, the transfer switch or the breaker box. If you have issues with other 110v circuits, this would be a place to start.

3.

Mar 18, 2015 | Dometic Rooftop RV Air Conditioner

1 Answer

How do you change the fuse in a window unit?


some uneit have a fuse in the electronic board, i would put a new electric plug first is it 220v or 110v go for the plug first

May 24, 2014 | LG LWHD1800R Wall/Window Air Conditioner

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I am going to install a 3 phase 100 amp circuit breaker panel board to provide service to 9-10 individual air conditioning units. how do i wire these services?


you dont need 3 phase you need a 220v or 110v single phase supply these units usually take about 10 to 15 amps each if this is central units then you can use 3 phase but not nescessary

Sep 07, 2011 | Heating & Cooling

1 Answer

How to use it if we have 220V outlet?


If the AC unit is 110V then you must plug it into a regular 110V outlet. You cannot plug it into the 220V outlet. Either get a bigger 220V unit or use a 12 gauge extension cord to get it to a 110V outlet.

Sep 06, 2011 | Haier Mechanical Air Conditioner HWF05XC7

4 Answers

I believe I might need to change my (20 amp) breaker switch that is running on 10-2 wire which supplies power to my Rheem Classic 10 Seer. I'm not sure if I need to have 220V of power on a 30amp...


Hello, the unit runs on 220 volts that's why # 10 wire must be used. The best bet is to use a 40amp breaker for 220 volts, gives the circuit more protection.

Sep 04, 2011 | Heating & Cooling

1 Answer

The fan inside is on but the ac will not kick on. Just had a brown out and reset the breaker on th emain...still nothing...Goodman Central Unit


You should have a fuse box or another breaker - located in near proxmity to the outside unit. I would check this out - I would determine (with a tester) whether the fuses were good or not - and not having a 'tester' I would replace the fuses with 'new ones,' and then try the unit.

If this didn't work, and since you just had a 'brown out' - my next step would be to make sure 'all' your electricity has been restored. It is possible that you have 'dropped a leg' which would account for the fact that your insided unit is running (110V) but your outside unit (220V) does not.

To determine this - you will need to call the Electric Company and have them tell you whether or not - all your electricity is available to you.

If they (Electric Company) inform you that you have all your electricity, and you've replaced your old fuses/or reset outside breaker - I would then find a qualified serviceperson to assist me.

Jun 09, 2011 | Heating & Cooling

1 Answer

All our our Panasonic Split Type air conditioners in our plant do not operate when power source is taken from a power generator set but the Carrier brands operates well. What could be the reason for this...


The genset power most likely is 220V line to ground power. You utility power is 220V line to line but uses 2ea 110 VAC line inputs to get that 220VAC. The only way to correct this is to reconfigure your generator connection to 220V line to line IF possible. Some generators that only have a 220V output. Re-configuration is not possible

Measure power at the breaker on gen power as the source and again with the utility as the source. You will see the difference in voltages. Utility power.... each side of the Breaker output to ground = 110V across the 2 terminals 220V

Gen power one side of the breaker output = 220V other side = ZERO.

You can make it work but it would take some heavy duty relays in a power sub paenl so that when the generator is running one side of the power is 220V and the other side is Ground. Once utility power is restored the relays would disengage and power would again be 220 VAC line to line.

You will need a licensed electrician and a PERMIT to install a relay panel such as I mentioned above. Improper wiring of the power relay swtitching panel can cause major power problems in any given installation and trip the MAIN PWR breaker.

Thanks for choosing FixYa.

Kelly

Sep 05, 2010 | Panasonic Heating & Cooling

1 Answer

Need wiring diagram


You can usually obtain a wiring diagram 'online' just by typing in the brand of AC you have and going to a site that has Dometic AC's. Of course you will need the Model # after you get there - but I don't see you having much problem chasing down a wiring diagram after some investigation on the web.

As to wiring the motor separate. Sure, you can run a separate electrical line (needs to on a breaker to handle the amps) just for the fan, but the problem would be 'cycling' the fan. For example: presently your fan goes 'on and off' by the thermostat. But if you wire your fan on a separate circuit - you would need a way to cycle it - and you would want to cycle it with the rest of your AC. You could always install a 'on/off' switch somewhere in the RV where you could manually turn it on and off - but I would think that would be more trouble than it was worth.

What you would need to do - is to wire the motor into a separate "relay" which would be controlled by your thermostat. Here is where it get's "sticky" cause you need to know a little about electricity in order to make sure you - dot all the i's and cross all the t's.

If you are pretty good with electricity then you should be able to get a 'relay' where the 'coil' (in the relay) is the same voltage as your thermostat - and then wire the relay so it will (via the thermostat) control the "line voltage" to the fan.

If you are not (good with electricity) I would obtain the help (hire someone if you have to) of someone to assist me.

Even if you have to pay someone - you're looking at a small outlay of money. I would venture to guess - parts and labor of $150 if he/she is fair.

hope this helps

Jun 12, 2010 | Dometic Rooftop RV Air Conditioner

1 Answer

What is a wire lug in my AC unit?


A lug is defined as a screw terminal made to accept one or more wires. Lugs as such are found in Circuit Breaker boxes (and on the circuit breakers themselves) Electrical junction boxes, Contactor relays such as found in Central Air units, those all being fairly large. There are also small lugs as would be associated with small wires such as thermostat wiring. Terminal diagrams for user-made connections are always provided with the unit being connected be it thermostat or HVAC unit. The thermostat comes with written documentation including diagrams, HVAC units typically have a diagram glued to the inside of the access panel.

Electricity can be your friend but can also kill you. Disconnect the power before altering or making any connections. If you don't know what you are doing, don't become a statistic, get help.

Jul 12, 2009 | Heating & Cooling

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