hi got my grow room coming soon in post have a little problem i think the room i have got to put the tent in only has a double plug socket which im guessing my contactor/relay box will take up for my 600watt light now i want to run my extractor fan in tent and another extractor fan also but want this to pull fresh air in from a vent in room with an oscillating fan to move air and for keeping temps down how or what do i need to run the 3 fans can these be run on a normal extension lead from a socket in another room with the fan taking fresh air in from vent on a timer to stop when light go,s off without shorting any thing thanks for any input