I'm in the middle of building a D-Bot printer, and have run into a bit of an issue when it comes to the heat bed wires. The heated bed is an aluminum plate with a silicon heater attached to it, and the heater wires are not long enough to make it through the drag chain when the Z-axis is fully extended.
The silicon pad is 120 V AC / 750 W and will be turned on/off by a Fotek SSR. The heater wires are cloth-covered and are probably 22-24 AWG. (Gauge is not labelled)
I suspect I'll need to extend the wires by putting in some sort of coupler at the top of the drag chain, but I'm not certain if there are specific requirements for the wires for an AC powered heat bed.
To this end, I was wondering:
- Is there a specific wire gauge that I should use for the heater wires, and should it have a specific cladding?
- What type of connector would be best for connecting the wires together securely in this case?
Thanks in advance!