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

Product ID: 47776718

Details

Brand
DERNORD
Color
silver
Item Length
6.89 inches
Material
Stainless
Voltage
12 volts

🔋12V battery & renewable energy ready

⚙️1-inch NPSM flange fits US standard tanks

🛡️UL & CUL safety certified stainless steel

¥8611

Duties & taxes included

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Sold byAmazon JapanDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🔥 Heat smarter, not harder with DERNORD! 🔋

COMPACT YET POWERFUL - 150W heating element delivers efficient warmth in a sleek 6.89-inch design, perfect for tight spaces.
DURABILITY MEETS SAFETY - Electropolished stainless steel surface resists corrosion while meeting UL and CUL safety standards.
UNIVERSAL FIT ZERO HASSLE - 1-inch NPSM flange ensures easy installation on standard or custom water tanks.
POWER YOUR OFF GRID LIFESTYLE - Seamlessly connects to batteries, solar panels, and wind turbines for eco-smart heating.
WATERPROOF SEAL FOR PEACE OF MIND - Includes flexible silicon sealing washer to prevent leaks and ensure long-lasting performance.

The DERNORD 12V 150W Immersion Heater is a compact, stainless steel submersible heating element designed for off-grid and standard water tanks. Featuring a 1-inch NPSM flange for universal compatibility, UL and CUL safety certifications, and a flexible silicon sealing washer, it delivers reliable, corrosion-resistant heating powered by batteries, solar, or wind energy.

Specifications

ASIN	B0761L2Q8M
Best Sellers Rank	#118,570 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #177 in Water Heater Replacement Parts
Brand Name	DERNORD
Color	silver
Customer Reviews	4.3 4.3 out of 5 stars (141)
Item Length	6.89 inches
Item Weight	8.16 ounces
Manufacturer	DERNORD
Material Type	Stainless Steel
Number of Items	1
Part Number	DERNORD-51
UPC	717643521518
Unit Count	1 Count
Voltage	12 volts
Wattage	150 watts

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