I am building a cooltube and am concerned about the wire gauge to the tube (Don't want to start a fire). I know what I will be using should be ample.

12 AWG (12 gauge) rated for 600 volts. 3 conductors with rubberized waterproof sheathing (pricey stuff but want to be safe).

Was just wondering what is the pulse start up voltage and the eventual running voltage I can expect this line to have to handle.

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