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dump loads for sale

Ptom

Solar Enthusiast
Joined
Oct 22, 2022
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131
OIMG_20240824_145914904.jpgIMG_20240824_150103158.jpgne is 1000 watts, the other 1500, both work as they should. I have changed my hydro system around so don't need the larger one, the smaller one hasn't been used for a couple decades. I'll sell both for $100.00, buyer pays shipping, from 83245 zip
 
They can be used with various voltages, no? That'd be my guess anyway..., but they were used for a 24 VDC application, and I referred to the wattage they could handle for a 24 volt app, plus I don't know the resistance values , just how they were used and what dump loads they handled, make sense?
 
They can be used with various voltages, no?
For lower voltage than designed, yes, but they will dissipate less power. For higher voltages, no, they'll draw too much power and overheat.

but they were used for a 24 VDC application, and I referred to the wattage they could handle for a 24 volt app, plus I don't know the resistance values , just how they were used and what dump loads they handled, make sense?
If they were built for a 24V system to draw the power you note, the resistances are (approximately):

R = V^2/P = 24V^2 / 1000W = 0.576 Ohm for the smaller one
R = V^2/P = 24V^2 / 1500W = 0.384 Ohm for the larger one

The resistance will stay the same (maybe slight variation with temperature), but the power and current will vary with voltage.

It looks like at least one of them has a nameplate, but I can't read it. It might be helpful to take pictures of those, they'll have the information someone actually needs to figure out if these would work for them.
 

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Thanks for that, I'll do so if a serious buyer asks me to, otherwise I'll try to avoid revealing my ignorance on the subject!
 

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