Recent content by foolios

Thanks all for the advice. I will hopefully be able to return it. It's close to the one year mark on the warranty. Seriously considering going with an AGM battery this time though. Those posts on that marine battery do suck.

The battery post is moving up and down. It doesn't seem to want to come all the way out. Will the battery still perform properly or is it damaged? Can it be repaired? Pictures attached.Thanks in advance.

I love this comment you made: If you decrease the voltage to a fixed resistance, you reduce the current and therefore the power draw. I have always looked at how something draws power. That's where I think I assumed current would rise when voltage dropped. My workings with transformers has...

At this old thread: https://www.physicsforums.com/showthread.php?t=362716 the reply: Now, whether this extra current matters depends on why the power supply voltage is dropping. If it is due to excessive current, then yes, increased current in one house could cause a slight drop in voltage...

One more question: Would it be wise to ground one side of the transformer?

Something is seeming to surface about understanding this. In AC, when the hot leg goes to ground, that power will find a way to get back into the system so that it can get back to the generator at the power station. It doesn't care whether it can find the neutral return back to the main...

One thing to consider, I think. If the 240v load will use 5 amps, then it will really be pulling 10 amps from the 120v side?

Why does it have to be the same battery, that's the part I am confused by. The electrons have that conducting path from one terminal to an opposite, just like being a battery. No? I mean, sure, no; but why?

After thinking about it, and at what has been replied, I think what I was looking at was a way to load balance some loads with step up voltage. Ok, that's not what I am interested in. I am interested in stepping up voltage. So, what I realize now is that I can simply take one transformer with...

thank u for the explanations

The reason primary current will flow to Earth is: the substation transformer feeding the primary line is also earthed back at the substation. So primary fault current flows into Earth and back toward the substation without having to enter your house. Are there dangers/accidents that can...

I was shown how to use two transformers to step up voltage and I am curious as to how it works. The low side of the transformers were connected to 120v and the high side was connected to a load at 240v. What amazed me was that the low sides connected in series could be connected to the 120v...

I have a small background with AC power and am trying to understand DC. I recently considered paralleling/serializing some batteries and realized how different a DC circuit is. Since a complete circuit of a battery is + to -, thus creating a short when connecting the two. Why then is it possible...

In the case of step-down transformers: The polarity between the primary and secondary transformer is subtracting when supplying test voltage to the primary transformer in the case where the H1 is matching the X1. Now if the polarity markings are wired but switched on the transformers to...

If apparent power is 720 volt amps and the true power is 624 watts which tells u that the reactive is 360 rva, why is it that the true power is not 50% of the apparent power when the reactive is 50% of the apparent? I would think that if you have 720va and then 360 rva that the true power...