I am wanting to use a 0/0/4 to handle a 600 W HID light, humidifier/dehumidifier, heater and air conditioner. Could someone please provide advice on how to protect the relay contacts i.e. MOV, TVS diode et al. I would be appreciative of a part number and how to hook them up. I presume the board tracks can handle the specified 10 amps/110 volt with all four relays conducting.
Also, I want to use 4 x 3051's to switch 4Watt/12v solenoids. Do I need protection there as well? Same data would be appreciated.
An 8/8/8 will do all the PC interface stuff.
Oh, and will I need a powered USB hub to run all this?