Electric radiators like the one in our top photo make heat with glowing red bars essentially just coiled wire heating elements that throw out heat by radiation while electric convector heaters generally have concentric circular heating elements positioned in front of electric fans so they transport heat more quickly by convection.
Electric heating element wire.
The wiring connection for both single phase 120v and 240v are same i e.
A coiled heating element from an electric toaster.
X dree 4 pcs ac high performance 220v 300w 2 wire essential industry mold cartridge well made heater heating elements 10mm x 150mm 7d4 36 90 c71 28 29 28.
Note that these element is 220 volts ratings and you can also 440 volts heater elements but you need to provide the line supply my mean to lines or two hot wires supply 440 volts.
The line is connected to the l 1 terminal while neutral or second line is connected to the l 3 terminal.
Black color is neutral while red is phase or line and the yellow green wire is used for ground earth.
Metallic resistance heating elements may be wire or ribbon straight or coiled.
They are used in common heating devices like toasters and hair dryers furnaces for industrial heating floor heating roof heating pathway heating to melt snow dryers etc.
Heating element the kanthal program of electric heating elements is the widest on the market.
The water heater element is connected to the thermostat via t 2 as hot and l 4 as neutral.