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Buck Boost Transformers, Need help understanding and choosing

Buck Boost Transformers, Need help understanding and choosing

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  #1  
Old 11-08-15, 07:27 PM
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Buck Boost Transformers, Need help understanding and choosing

I'm building a cabin on my hill, nearest electric source is 1000ft away. I was told I could run a 10/2 wire 220v then use a buck booster to compensate for loss. Will this work? What transformer would I need?
Been looking at 250SV82B does this output 220v ?
Thanks for the help in advance....
 
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Old 11-08-15, 07:34 PM
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No.... that transformer is for 240v to 24v.

There really isn't a transformer you can use to overcome long cable lengths.
How much amperage do you require at the cabin ?
The wire is rated for 30A so you won't get more than that.

You would need a 240v to 120/240v transformer with multi output taps but the drop on that wire is going to be tremendous.
 
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Old 11-08-15, 08:07 PM
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needing probably about 30A just some lighting, small fridge, small stove, and small a/c in summer. I thought to run 220 to cabin, then down to 110 for everything inside.
 
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Old 11-08-15, 08:25 PM
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You might ask the power company if they will provide metered high voltage. If so you would only need one wire and you could step it down with a transformer at the cabin. It though is probably not a DIY solution.
 
  #5  
Old 11-09-15, 06:23 AM
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they cannot get up the hill to set poles. I'm trying to find economical way to get power up there. would use gen but don't want to hear it.
 
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Old 11-09-15, 08:08 AM
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You would run the power line not them for a earth return such as I suggested that is why it has to be metered at their pole. If you can get a tractor to dig a trench you can bury your own wire.
 
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Old 11-09-15, 08:24 AM
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A boost transformer will increase the voltage but it won't help the sag. When you use heavy current, like from the A/C, you're going to still get a lot of voltage drop.

How are you running the cable ? Conduit/aerial ?
You're going to need to increase the line you're running up there.
 
  #8  
Old 11-09-15, 09:53 AM
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Use 40 amp continuous duty transformers to step up 240 volts only at the house to 480 volts, and step back down to 120/240 at the cabin.

Use 3 conductors of 4 gauge copper wire (or 2 gauge aluminum), one is the equipment grounding conductor.

Gives you 40 amps at about 240 volts with up to 3% voltage drop in the cabin. At 480 volts the transmission to the cabin will go up to 20 amps.

Use 40 amp breaker for the 240 volt feed at the main house panel.

Single phase transformer circuits such as these do not use or need a neutral running the distance.

Added later: You could use 6 gauge wiring if you step up to and down from 600 volts for the 1000 foot run. The 600 volts (or 480 volts) will not be present in the house panel or the cabin subpanel. (Wiring methods are somewhat different when you go above 600 volts so I won't go into that further.)
 

Last edited by AllanJ; 11-09-15 at 10:15 AM.
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