Repair Broken Heater Element

101

00:52:22

    The heating element break is where the 500 milliohm resistor is located.
    Instead of the resistor-  cut the shank of shingle nail 75% through and clean both ends of broken heater wire.  Cut nail shank above to nail head off and nail shank below to nail point off.  Insert ends of heater element in partly cut slot to hammer or squeeze section of nail shank connection together.
     In the past, I tried shortening heater element and bolting to make connection and then I found the resistance of heater element too low and the glowing element burned out quickly.
     Keeping resistance of heating element as close as possible is idea of this method.

published 7 years ago

hurz

7 years ago

@lmccoig, have you checked that with the help of Ohms law? You talking about 27.2kWatt heater, WOW.

lmccoig

7 years ago

I did not set for ohms law. I used bolt connector on shortened heater element once and it did really red for a moment.

hurz

7 years ago

27200Watt were at each connection you also drop 101Watt! The connection alone is already a heater. Are you sure about 27000Watt?

BillyT

7 years ago

The resistance was probably read cold, there is a fair ptc effect when connected to power.

hurz

7 years ago

Even its hot double high its still 13.6kW this is 6times to high i can connect to normal mains plug.

hurz

7 years ago

@lmccoing, could you please clarify!

lmccoig

7 years ago

Okay. 1500 watt electric heater operates at 120 volts using 12.5 amps current. At operating temperature that would be 9.6 ohms Resistance in heating coil. I think I should have used resistors to picture resistance wire and not the inductors at 17.5 millihenries.

hurz

7 years ago

There were never inductors. The heating element is 9.6Ohm makes sense while the connectors might have 10mOhm which then makes about 1.6Watt at each connector. To get hot or even glowing it need a bit more power suppose the contact gets 500mOhm you reach about 80Watt which might burn! I think this is what you probably want to demonstrate?

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