Re: [APD] One bulb on a two bulb ballast

[krisa at demilune_net]

Thanks guys.  It's an AH Supply ballast with two separate wires for the
bulbs.  I was just concerned because I had been running a single new bulb
and it died on me after only about a month and I wasn't sure if that was
good practice.  So does anyone know how to run diagnostics on a ballast to
make sure it is still working within specs?

BTW, here's a point of discussion:  Are they lamps or bulbs? ;)


>
> Message: 2
> Date: Wed, 07 Sep 2005 08:58:19 -0700
> From: Jerry Baker <jerry at bakerweb_biz>
> Subject: Re: [APD] One bulb on a two bulb ballast
> To: aquatic plants digest <aquatic-plants at actwin_com>
>
> S. Hieber wrote:
>> If the balast does not require the bulbs to be wired in
>> series, then it should not matter. But it's best to check
>> with the wiring diagrams if they are avaialble from the
>> ballast manufacturer.
>
> Very true. Good point. If you aren't familiar with what it means to be
> wired in series (original poster), you can just check to see if there is
> a wire going from one lamp socket to the other. In general, if it is not
> wired in series, each lamp will have a separate set of wires to the
> ballast and none connecting each other.
>
> So, in conclusion:
>
> 1) If there is a wire running from one lamp socket to the other, then it
> might be bad to run only one light.
>
> 2) If there is not a wire between lamp sockets, and each socket has its
> own exclusive set of wires running to the ballast, then it's probably OK.
>
> HTH.
>
> --
> Jerry Baker
>
>
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> End of Aquatic-Plants Digest, Vol 25, Issue 18
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Kristian Anderson
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