I am in the process of wiring a 240V duct heater. From the 90A breaker in the panel, I was told to use (by the HVAC installer) 3/#2 1/#4 AL wire from the panel to the junction box. At the junction box, there is 3 copper leads with terminal lugs - 2 hot, one ground. My question is the neutral connection? The duct heater does not appear to have a neutral terminal inside to connect to.
Thanks for any input.