efficientPV's latest activity

Yes, when I hear this I know it is someone who doesn't know electronics. Typically, when you get above 50V rating there is no forward...

I do PWM water heating directly off array. It is the most efficient method as far as conversion loss from wires, battery, electronics...

I've been saving coffee pot water heater elements (have three so far 17 ohms each) to make a hot water dispenser. They have a resistor...

Common water heater elements fit inside standard pipe fittings. Why reinvent the wheel. There would be poor heat transfer with the...

I don't think victron is that smart, just better than nothing. It can tell you when there is excess, just not how much. You need a...

Where did you come up with 15. Typically the resistance change is 7 to 1. Most I've ever seen is 10. A 100W 120V lamp is more than...

And makeskyblue along with many others. It is due to shading conditions that introduce a second peak on the curve due to it only doing a...

The nice thing about diversion to resistance is it is immediate in just a fraction of a second. Chart is just a half hour of diversion...

I totally agree. Solar people are the greatest energy wasters in the world. I always have somewhere to send excess energy

The higher the temperature, the more heat is lost. For solar applications I believe in using tank stratification. It takes 1.5KWH just...

Solar thermal is a worthless asset once the water is hot enough. So, the space is wasted. Solar thermal has lost. Nobody wants it. It...

I don't know what that means. Is that white wire a neutral or a ground or not part of the incoming feed?

Is that white NEUTRAL connected to ground screw?

When roof real estate is precious, thermal is a poor use of space. Electricity has many uses and thermal is just a waste of hardware...

There is an old mine in Butte Montana that is operated as a health spa and people pay to lounge in radon gas to cure illness. Not good...

You will probably waste more power not being to utilize the excess when It does exist. I have some east facing panels and my batteries...

It is pretty amazing what it takes to kill you that is heart related. I had a yearly physical with EKG. It said my heart rate was 157...

Chances are your relay will burn up and that arrangement will kill the batteries. 12V heating is just too much current and losses are...

Conservation of energy. A panel sending current to an outside load will be slightly cooler. Shorting a panel will have the same...

For zero export, feed line voltage and grid current into the micro. Example, any time the voltage is positive, just average up the...