M trying to build my own control box for my HLT element. Element is 5500 watt. I understand that it only draws 23 amps but I bought a 40 amp ssr/ pid combo on amazon. The diagram on the pid says 90-260v on the pins where the power is connected. Does this mean that I bring all power in there? Both red and black connect there? If not then where? I plan on putting a common ground bus bar, shoul I put neutral and power buses too? And this is dumb but how to I connect the heat sink and bus/buses to the box? Tiny carriage bolts through the bottom or what. I'm sorry for the stupid questions. Total noob to electronics, I'm a bricklayer not an engineer.