Aluminum vs Copper? [RE-wrenches]

[Chris Worcester]

Hi Ron,

I have the formula for single phase voltage drop calcs, but for the 3 phase
calc I'm using the ElectriCalc Pro model 5060 calculator by Calculated
Industries. Check it out at www.calculated.com or email them at
info at calculated.com. This is a great system design tool that's updated to
the latest version of the NEC.  

Sincerely,

Chris Worcester 
NABCEP Certified PV Installer
USA Distributor of Proven Wind Turbines
Toll Free: 877-682-4503
Fax: 530-582-4603
www.solarwindworks.com
chris at solarwindworks.com
"Proven Energy Solutions"

-----Original Message-----
From: Ron Young [mailto:solareagle at solareagle.com] 
Sent: Sunday, September 03, 2006 10:24 AM
To: RE-wrenches at topica.com
Subject: Re: Aluminum vs Copper? [RE-wrenches]


Hi Chris,
Do you have a formula for this?

Ron

On 3-Sep-06, at 7:26 AM, Chris Worcester wrote:

>
> Hi Ron,
>
> This is 3 phase wild AC from the turbine with 3 conductors going to the
> Proven ECM2502. The math is different for three phase, you do have an 
> extra
> conductor carrying the current. The 2500 watt 48 volt calc comes in at 
> 30.07
> amps per phase. These values I quoted you for the 300' distance are 
> using a
> 3 phase calc.
>
> 2% voltage Drop = 4/0 copper
> 3% VD = 2/0 copper
> 4% VD =1/0 Copper
> 5% VD =1 AWG copper
>
> You can use the aluminum if you like, just be sure to use an 
> anti-oxidant on
> all connections. I don't use aluminum as I don't feel it's as durable.
>
> Sincerely,
>
> Chris Worcester
> NABCEP Certified PV Installer
> USA Distributor of Proven Wind Turbines
> Toll Free: 877-682-4503
> Fax: 530-582-4603
> www.solarwindworks.com
> chris at solarwindworks.com
> "Proven Energy Solutions"
> -----Original Message-----
> From: Ron Young [mailto:solareagle at solareagle.com]
> Sent: Saturday, September 02, 2006 4:26 PM
> To: RE-wrenches at topica.com
> Subject: Aluminum vs Copper? [RE-wrenches]
>
>
> Wrenches,
> This may have been discussed previously but would appreciate input. I'm
> using a long run of wire 2/0 ga. copper would put me right on the line
> for 5% line loss (wind turbine @48v approx. 52 amps max. output, 2.5kw)
> . 4/0 aluminum would be about 6.3% voltage drop according to my
> calculations. The aluminum is a much bigger piece of wire but less than
> half the price. Any comments on working with one vs. the other?
>
> Ron Young
> Solareagle
>
>
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