I need to install one or 2 duct boosters in my HVAC system, and want to hook them up to the furnace, possibly (if needed) using a 120VAC Relay. The EAC terminals on the Furnace can supply 1A/120VAC, and I need between 1-1.5A for 2 ductboosters. The ductboosters will be further away from the furnace, so I need to run wire to it. I am planning to fuse the wires appropriately - so there will be no issues there...
1) When using a relay, I plan to use a 5A-10A relay (so the wetting current is sufficient). Can I install an ice-cube style relay in a regular 4x4 outlet box, or do i need to find a different solution? A single ductbooster I can run off the furnace directly, but 2 I cannot obviously... And even 1 I am concerned about... I don't want to fry the furnace controller...
2) Can I use 14/2 Romex to hook up the fans, I know that's rated for 15A, but the maximum current carried really again is 1.5A? Any code problems hard wiring using this?
3) If I were to use a relay, do I need to add a separate branch circuit, or can I draw the current from the furnace circuit? It supplies currently the furnace and a humidifier. (Planning to add a 36W UV-C light)
Anything else I need to be aware off?