12v ballasts [RE-wrenches]

[Travis Creswell, Ozark Solar]

Just a little more FYI to add what Kurt mentioned,

120 VAC electronic ballasts are available in a variety of ballast factors.
In general they range from as low to .6 to 1.2.

Standard electronic ballasts are .85 to .88 (varies amongst manufacturers).
That number is multiplied x the lumens the lamp is rated at to determine the
lumens that lamp will deliver.

If you use a ballast with a ballast factor of 1.2 then you get 20% more
light out of the lamp then it's rated at.  The lamp manufacturers fully
warranty their lamps for use on ballasts of up to 1.2.

Wattage is approximately correspondent with ballast factor but to be 100%
accurate consult the manufacturers published specifications.

An easy way to get more light out of a light fixture with no increase in
wattage is to use an "800 Series" lamp.  These lamps have 5%-10% more light
output with no increase in energy usage.

Generally speaking, FO40 refers to magnetic ballasts (in the standard AC
world) and is not compatible with T-8 lamps.

Best,
Travis Creswell
Ozark Energy Services


-----Original Message-----
From: Kurt Albershardt [mailto:info at es-ee.com] 
Sent: Monday, July 31, 2006 1:36 PM
To: RE-wrenches at topica.com
Subject: Re: 12v ballasts [RE-wrenches]


Just an FYI that (like the vast majority of AC electronic ballasts) the Iota
32 watt DC ballasts underdrive the tube so you will get approximately 28
Watts out of them.

They still offer the FO40 ballast which will drive lamps up to 40W (and
really push 32W into a T8) if you ask.





--On Monday, July 31, 2006 9:41 AM -0700 David Katz <david at aeesolar.com>
wrote:

>
> Jay,
> 40 watt tubes have been replaced by 32 watt T8 and 25 watt T10 tubes.  Thy
fit the same 4 foot fixtures. AEE has them in stock.
> Michael - this is not an advertisement.
> David
>
> David Katz
> AEE Solar, Inc.
> formerly Alternative Energy Engineering
> 1155 Redway Drive - Box 339
> Redway, CA  95560  USA
> Phone 707-825-1200
> Fax 707-825-1202
> email david at aeesolar.com
> www.aeesolar.com
>
>
>
>
>
>
> Jay Peltz, Peltz Power wrote:
>>
>> HI All,
>>
>> Say looking for 12v  40 watt single tube ballast, are they still
>> available, and if so where?
>>
>> thanks,
>> jay
>>
>> peltz power
--------------------


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