I would like to top mount the element, but a small amount of the tube won't be covered with water. Will that be a problem? Denord please.

Yes it will . Needs to be covered with water at all times to keep it from overheating . Overheating will damage the unit .needs to be at least 4to6 inches under water at all times .p

What if you have lower amperage? instead of 12, maybe 3-5 amps. will it still work? just not get as hot?

Its 12 volts, not 12 amps. If you have 12v and 3 - 5 amps you will get maybe 36 - 60 watts. It won't get very hot.

Can this be used hooked straight to a 100w solar panel?

150w element 100w panel no offense do the math. It will heat but at 12v 150w takes 4 hrs to heat 5 gallons of water so I doubt your getting a solid 5 hrs full output. Not recommended but might limp through.

Is the internal wire heavy enough to connect 24v and get 600 watts (i.e. double the amps)? Thanks!

Hi, I don't think it's possible, you would shorten life to the resistance. I recommend that if you are going to use 24V, connect them in series.

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🔥 Power your water heating with smart, sustainable energy! ⚡

SMART ENERGY DUMP LOAD - Automatically diverts excess renewable energy to heat water, maximizing battery life and efficiency.
DURABILITY MEETS SAFETY - UL & CUL listed with electropolished stainless steel for long-lasting, corrosion-resistant performance.
VERSATILE HEATING POWER - 150W element ideal for caravans, boats, workshops, biodiesel production, and winter freeze prevention.
UNIVERSAL FIT ZERO HASSLE - 1-inch NPSM flange designed to match USA standard water tanks or custom setups.
SEAMLESS RENEWABLE INTEGRATION - Connect effortlessly to batteries, solar panels, or wind turbines for eco-smart heating.

The DERNORD 12V 150W Immersion Heater is a robust, stainless steel submersible heating element featuring a 1-inch NPSM flange for universal tank compatibility. Designed for seamless integration with 12V batteries and renewable energy sources like solar and wind, it offers corrosion resistance, UL/CUL safety certification, and versatile applications from domestic hot water to biodiesel production and freeze prevention.

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Material	Stainless Steel
Voltage	12 Volts
Item Length	6.89 Inches
Brand	DERNORD
Color	silver
Wattage	150 watts
Item Weight	8.16 ounces
UPC	717643521518
Manufacturer	DERNORD
Part Number	DERNORD-51
Item Weight	8.2 ounces
Is Discontinued By Manufacturer	Yes
Size	12V 150W
Item Package Quantity	1
Batteries Included?	No
Batteries Required?	No

DERNORD 12V 150W Immersion Heater Submersible Water Heater Element Stainless Steel Heating Element with 1 Inch NPSM Flange

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