Certifiable Nitherm

Inventor, small business owner of product design company seeks EE for UL/TUV/CE mark spec level simple electrical system for heating small wires. Solid state (SCR vs Relay) preferred. Provide schematic and components specs and possible wiring layout, cabling details like gauge/color connector requirements for 110/220 desktop wire heater. Heating should be done using electrical current, and wires are thin, 0.4mm. with resistivity of 82×10−6 Ω·cm, length 10-20mm. Desired heat level is "glowing red" or about 500C. I will handle mechanics, and control inputs to current source switch. Provide parallel isolated low voltage source (5VDC) off common main. Employ opto isolation on control to current control. Assume connector out for DC source, 2 thermally insulated wires to the target wire contactors, incoming control line providing PWM at low DC voltage. Provide 2 PCB edge holes of 3mm inset by 3mm from edge, and 20mm apart. Also provide for 4 corner holes of 3mm for mounting/Case ground connection possibly. Keep PCB down to 100mmx100mm if possible. Assume enclosure is no larger than 200mmx200mm for purposes of cabling to panel mount devices such as power cord.