I have a 225A main service panel. I also have 2 sub-panels with 125A and 200A ratings respectively.
There's a 100A 2-pole breaker in my main panel. I want to feed both sub-panels from that single breaker (all inter-panel wiring, lugs and terminations are good for 100A):
- Can I run the cable to subpanel #1, replace all the lugs with 2-wire lugs, and leap frog to panel 2?
- OR, can I have an intermediate junction box with 3-way splices on all 4 wires?
- OR, am I absolutely required to serve each subpanel from a separate breaker (not illustrated)?