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Heater polarity doesn't matter The heater cartridges are just large resistors and so polarity is irrelevant. Either can be positive or negative. You can extend the leads by cutting and splicing in ~20 gauge wires* to a two pin JST connector line you suggest. *At 24 volts and 30 watts, you need wire that is rated to carry at least 1.25 amps. The US National ...


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1 meter puts you far enough away from the heater than you don't need high temperature wiring to extend it. The larger the guage(e.g. 20 guage) the less resistance you will add to the heater circuit. This doesn't matter as long as you can still achieve your maximum temperature (if you can still achieve the same current without maxing out your voltage on the ...


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