I am building a AC lamp controller with ESP8266 and a simple relay. To power things up in the "DC side" - I purchased a bunch of cheap 220v to 5v DC buck converters.
The converter unit came on a small PCB - see picture attached.
I need to solder two 220v AC input wires (to the PCB on the lower right side of the picture).
I am using a thick gauge solid copper cable (that I use to 220v appliances) and tried soldering it to the PCB points - but I can't get a good and solid solder, because the PCB is so small and the cable is thick...
I tried to solder legs to the PCB and then to the thick cable, but still - it's kinda flimsy and looks aweful...
What's the best way to do it right?
Will a smaller cable be fine for 220v?
Maybe I should connect a smaller short wire to the PCB and then that cable to the thick cable?
I am afraid of the risk of a fire hazard- because this whole thing will be in a small closed box - away from sight...
The converter unit came on a small PCB - see picture attached.
I need to solder two 220v AC input wires (to the PCB on the lower right side of the picture).
I am using a thick gauge solid copper cable (that I use to 220v appliances) and tried soldering it to the PCB points - but I can't get a good and solid solder, because the PCB is so small and the cable is thick...
I tried to solder legs to the PCB and then to the thick cable, but still - it's kinda flimsy and looks aweful...
What's the best way to do it right?
Will a smaller cable be fine for 220v?
Maybe I should connect a smaller short wire to the PCB and then that cable to the thick cable?
I am afraid of the risk of a fire hazard- because this whole thing will be in a small closed box - away from sight...
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