What is the diffence between 115v and 230v

  • We are currently upgrading MFK. thanks! -neo
230V is cheaper, yes...but not near as convenient, unless you are set up for it. Most dryer outlets are 220(230), but your common household outlet is 110(120). A lot of other Countries are 220V standard.

I have seen photos of your shop, you may have 220 out there already. If so, you may want to consider it :)

Its half the cost to run 220 versus 110. But in your case, you have to consider the heaters wattage.

We'll make an example:

(1) 100 Watt, 110 V heater costs you $1 a day to run (only an example)
(1) 100 Watt, 220 V heater costs you $0.50 a day to run

Let's say 100 Watt is enough to hold temperature in your tank at 78F. If you put in a 200 Watt heater, your usage won't go up or down, the heater just won't run as often.

So, if you are thinking of putting in 220V to get more output, it most likely won't be cost effective for say anything smaller than 300 gallon. Above that, there's some initial cost, but then it should pay in the long run.

Hope these examples help.

Good luck!
 
Sorry CLDarnell, but , you've got that totally wrong.
When talking about electric heat production 100 watts is 100 watts. The cost to operate is the same for 110v or 220v. The difference is Amperage.
Example :
100 watts divided by 110 volts = .9090 Amps
100 watts divided by 220 volts = .4545 Amps

The advantages to 220v are reduced voltage drop and the ability to run more heaters on the same circuit. The cost to operate is the same.
 
The cost to run the 230v would not change. The advantage is that you can get more power(watts) out of a 20 amp 230v then out of a 110v while still using the same sized wire. Also you only have a limited number of amps in your service, by using 230v for high draw loads(clothes dryer and air conditioner) you don't use as much of your service.
 
115
 
CA-Delta;4682502; said:
The advantages to 220v are reduced voltage drop and the ability to run more heaters on the same circuit. The cost to operate is the same.

There's your answer. Cheaper to do 110v unless you already have a 220 plug there.
 
Agreed with 3 and 4... Same thing just divide amps in half, because the oad is shared over 2 wires instead of 1...

Quote:
Example :
100 watts divided by 110 volts = .9090 Amps (one wire hot, the other neutral= .9090amps on hot wire)

100 watts divided by 220 volts = .4545 Amps (both wires hot=.4545amps x2= .9090 total)
 
Bderick67;4682608;4682608 said:
by using 230v for high draw loads(clothes dryer and air conditioner) you don't use as much of your service.
Actually Brian , that's not accurate either. The limitations of a distribution panel are total rated amperage and number of spaces or lugs. A single phase 230v breaker uses two lugs or positions in a panel while a 120v breaker uses one. It makes no difference whether you fill the spaces with 40 120v breakers or 20 240v breakers. In the end it's all the same.

clarification : The reason large appliances are typically wired 230v is it is cheaper to run two smaller/low amperage wires than one large/high amperage wire. There is also a benefit to running motor circuits on 230v as the motor will run cooler thereby lasting longer.
 
the 230 is already run to a different room for a tanning bed my plan was just to pull the wire to the basement and use it since we got rid of the tanning bed. since its the same i guess ill find what is cheaper to purchase 3 1800 watt heaters plus controllers or 1 of the other.
 
CA-Delta;4683469; said:
Actually Brian , that's not accurate either. The limitations of a distribution panel are total rated amperage and number of spaces or lugs. A single phase 230v breaker uses two lugs or positions in a panel while a 120v breaker uses one. It makes no difference whether you fill the spaces with 40 120v breakers or 20 240v breakers. In the end it's all the same.

The main breaker in the panel of the residence limits the panel not the breaker spaces. The branch circuit breakers are determined by the load requirements. BTW when speaking of breakers, amperage and number of poles is more accurate terminology. If your 230v loads were 120v they will use about twice as much amperage. So running your clothes dryer, cooking a meal in the oven on a hot summer day with the AC on may put a 60-70 amp draw on a typical 150a residential service whereas if they were all 120v the draw would be 120 to 140 amps of draw.

clarification : The reason large appliances are typically wired 230v is it is cheaper to run two smaller/low amperage wires than one large/high amperage wire.

Yes it is an advantage as I already eluded to that;
The advantage is that you can get more power(watts) out of a 20 amp 230v then out of a 110v while still using the same sized wire.

But not the only reason as I explained above

There is also a benefit to running motor circuits on 230v as the motor will run cooler thereby lasting longer.

The difference you will see between single phase motors whether single pole or two pole is negligible Unlike the difference you see with a 208v or 480v three phase motor.
:)
 
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