why do you crimp the connector 3x? One for each wire, what is the 3rd?

I’m not sure why you have to crimp 3x’s unless their tool is designed that way? I only crimped twice in my engine compartment of my pickup and have had no issues.

Will these work for 10/2 wire at 230V and 20 amps?

You should be able to use on 230 volt 20 amp. The yellow should handle 30 amp minimum. Usually if the wires fit in it. It will work

Do you have the Butt connectors that are 12-10 on one end and 16-14 on the other

No, they are the same on each end. The colors indicate the size, as well they are labeled.

Can these be submerged? I want to use them for a bilge pump.

Yes you can, the discription of the product says they are Marine Grade Waterproof Wire Connectors.

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🔥 Seal the deal with connectors that never quit!

DIY FRIENDLY - Compatible with a wide range of tools, making installation quick and hassle-free.
VERSATILE USE - Perfect for automotive, marine, home, and scientific projects with 3:1 shrink ratio tubing.
WATERPROOF SEAL - Hot melt adhesive creates a secure, flame-retardant, and waterproof connection every time.
SUPERIOR CONDUCTIVITY - Tinned copper core ensures optimal electrical flow and durability.
UNBREAKABLE INSULATION - Polyolefin shell resists corrosion and chemical erosion for long-lasting protection.

This 200-piece set of heat shrink butt connectors features tinned copper cores for enhanced conductivity, durable polyolefin insulation, and a hot melt adhesive lining that ensures waterproof, flame-retardant seals. Rated for 600 volts and 150°C, these connectors come in four colors and sizes, making them ideal for automotive, marine, and DIY electrical projects.

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Colour	BLUE YELLOW RED WHITE
Connector Type	Butt Splice
Contact Material	Copper
Insulation Material	Polyolefin
Terminal	Butt Terminal
Material	Copper
Brand	haisstronica
Specification Met	CE, RoHS
Temperature Rating	150 degree celsius
Product Dimensions	25L x 25W x 25H Millimeters
Maximum Voltage	600 Volts (DC)
Net Quantity	1.0 count
Manufacturer	haisstronica
UPC	192687289905
Model number	HX1053
Item Weight	360 g
Item model number	HX1053
Voltage	12 Volts
Power Source	ac
Are batteries included?	No

200PCS Heat Shrink Butt Connectors-Butt Connectors Insulated Automotive, Butt Splice Waterproof Butt Connectors (4 Colors / 4 Sizes)

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