[BC] Transformers needed

R A Meuser rameuser at ieee.org
Fri Oct 26 14:35:48 CDT 2007


Bill here is a link for 10:1 transformers. They look like they could be 
perfect for your needs. Just talk to the manufacturer about running them 
at higher voltage. I am fairly sure you can do it.




Bill Sepmeier wrote:
> Just considering the options ... 480/600VAC would lose less than 2% on 
> #12 gauge.  It looks like I'll probably go with something along the line 
> you detail, though ... transformers in the range I'd like just aren't 
> all that common anymore.  This has turned into something of a mad 
> scientist project out here .... I calculated the return on investment 
> recently and I don't think my kids will olive to see one!  But, it's my 
> hobby-turned-business, so it doesn't matter...
> 
> Frankly, the best ROI on any of this technology I've put in so far by 
> FAR is the solar thermal ... and that "free" tank of 150 F water every 
> day makes for much longer and more enjoyable showers!  I don't 
> understand why every home in the country doesn't have solar hot water. 
> It's so easy....
> 
> B
> 
> 
> 
> At 07:29 AM 10/25/2007, you wrote:
> 
>> not to rain on your idea here, but is it really worth the effort and 
>> cost of the
>> transformers vs the cost of larger wire ?
>>
>> I make the current to be 8.33 amps per leg
>>
>> using 10 amps for ease of figuring, and a conservative 2% voltage drop 
>> max, then # 1 wire
>> would work as it has 0.1239  ohms per 1000 ft
>>
>> if you can live with 4 % drop, then # 6 would work out
>>
>> since you are using six phases, you might want to consider using a 
>> pair of service
>> entrance 'triplex' cables (as used for 3-phase POCO pole-to-meter) for 
>> this, any
>> electrical supply house can give you a price on this (and probably cut 
>> you a deal if you
>> buy two 1000-ft rolls at once)



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