DERNORD 48V 1500W Submersible Water Heater Element Immersion Heating Element

If You need it, buy it!

The 15 Ohm resistance means that 48/1.5 = 32A * 48 = 1536W so it should meet its specifications. I just received this item and have not tested, may update with more info later. At 56 Volts (a common occurrence on battery powered 48V systems) 56 /1.5 = 37.33 * 56 = 2090W so hopefully this water heater element can handle 2000W also for sustained periods of time.

Did not work the way I figure it should.

works perfect after 2 years

I received this unit and done some testing on it before fitting into my installation. It has two heating elements each element is at 3.5 Ohms and in Parallel 1.8 Ohms If I calculate this 48Vdc , Amp: 26,666666666666664 and and 1.8 Ohms The maximum output 1280Watts and not 1500Watts as advertised.

on the product, it states 44 to 114 volts. but you pug in 48v then the grid-tie gets extremely hot

Happy, happy, happy - I ordered this beautiful stainless 48 volt heating element to install in a beer keg. I know some folks like warm beer - I don't; I'll be making the last water heater I'll ever need out of it. I've cut the lid out of the keg - need to drill for element and anode, design the circuit, and do a bit of fabrication and welding. Life: eats up all my time. The element has been sitting around for a week or so now - decided to test her out this evening. I grabbed a 14 awg SAE connector, a half gallon mason jar, filled it with water, crimped on some ring terminals, dropped the element in the jar, and hooked her to 50AH 48v bank. Yep - I know 14 gauge wire is way under on the current carrying capacity - just a quick test – didn't plan on taking a bath. Quick test it was – couldn't have been more than 2 or 3 minutes and the water was at 150 degrees, and I was smiling. During heating amp draw was between 25.? amps and 27.? amps - so right around 1200 to 1300 watt range. I couldn't tell if it's low on watts due to the element or my 14 awg set up. (or my 44.4 volt bank @ 47 volts) Could be something else I need to do to the circuit – I'll study up on it before I build it. Anywho – I hope it does run at 1250 watts – I think that will heat the water plenty quick enough for me, and I prefer the slower drain / amp draw on batteries. That's the best I can do ya right now – be back after build with some more data, data, processing. The element itself looks and feels (hefty) very nice. It has a substantial / solid chunk of stainless that the terminals are mounted in, and is hex machine cut for a 1 1/2” wrench. The threading below looks to be 1” npt. Nice pliable (silicon ? Teflon?) eighth inch washer around the threads. So far – 5 Super Novas for The DERNORD 48V 1500W Water Heating Element Thanks for Reading - Have an Incredible Life!

Great little unit. There are actually two different heating elements, which you can disconnect to halve the power output, or possibly run from two separate systems. I'll be using this for a solar dump load, which allow you to use "waste" solar power after your batteries are full but the sun is still on your panels. It could also be run directly from several solar panels, whether to heat an animal water tank to keep it from freezing, or for heating a water heater.

Easy to install, no leaks, will buy again!

One thing I wish was different is that the input terminals are very close together and I have t be very careful or I will short out the power source which is a battery bank.