The problem is that different wattages use different "amounts" of electricity to power them.Originally Posted by locolobito
I don't know if the inkbird is proportional or on/off so let's run both scenarios:
Proportional - You have your stat probe on one of the 4 inch by 1 ft tapes, and it needs 50% power to give off 90F consistently, so if you have the 8 inch connected to that same stat it will feed that heat tape the same 50%, the problem is that 50% of the first (smaller) tape is not the same as the 50% of the second (larger) tape, so your larger tape will not give off the same heat or have the same temperature as your smaller one.
On/Off - Basically the same idea, just substitute the 50% part with the tape needing x amount of seconds/minutes of 100% heat/power to reach the 90F, and since the sizes are different, the wattage is different therefore the output (heat) will be different.
That's why it is wiser to use the same tape (wattage) for the entire rack and use a different thermostat for something with a different wattage.
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