No mention of what country White Penny is located. No mention of what kind of electrical service is being supplied to the residence. Am I to assume this is a typical residential home in the United States that is feed from a single phase step-down transformer, 240 volts secondary winding with a grounded center tap? No mention of having a subpanel for the grow room feed by four wires from the main panel consisting of one neutral wire, one grounding wire, two hot wires from a double pole circuit breaker. How do you plan to balance your loads in the main panel? No mention about using a lighting controller, so am I to assume you don't want to turn-off your lights?Here is what Im going to do from that 60 amps breaker Im only going to run 4 lights of 1000 watts each one and 2 inline fans of 6 inches , so I guess I wont have any problems with that. the other 2 lights Im going to run them from a complete different circuit. you guys correct me if Im wrong... Really got to thank all of you guys for clearing all my doubts to this point I was really lost is this area