| Author | Message | ||
| Bruce Henderson (Oonrahnjay)
Registered Member Username: Oonrahnjay Post Number: 475 Registered: 8-2004 Posted From: 70.60.107.113  Rating: N/A |
Hi, Folks. I'm sorry about all my basic questions but I'm right in the middle of my spec work. I'm looking at an air con unit that's spec'd at 1150 watts (normal running power draw) with a rating on 5750 (or about 6 times as much) at start up and "stalled compressor". Is this typical? Thanks, BH NC | ||
| Rob Norgren (Robsedona)
Registered Member Username: Robsedona Post Number: 162 Registered: 11-2007 Posted From: 75.210.211.233  Rating: N/A |
I know for 2 to start you need a 8kw gen and for 3 12KW gen So I would think from this they are under 5750 for 5750 to start 3 with nothing running you would need a 18KW gen and a 12KW gen to start 2 and be running nothing elce. On mine I can run 2 airs and the Microwave at the same time on 8KW gen(that is all on start up and runs fine) I thing is about 2 times the power on start up! I hope this helps I do not see the start up info in my old Info on the AC | ||
| Pete/RTS Daytona (Pete_rtsdaytona)
Registered Member Username: Pete_rtsdaytona Post Number: 582 Registered: 1-2005 Posted From: 97.104.18.110  Rating: N/A |
Rull of thumb - use to be ???? 4KW for 1 rooftop ac 6kw for 2 rooftop ac's the run watts are approx 1.5 kw for avg rooftops But I guess with Electric H/W heaters and M/W's that may have change ?? | ||
| Rob Norgren (Robsedona)
Registered Member Username: Robsedona Post Number: 163 Registered: 11-2007 Posted From: 75.210.211.233 Rating: N/A |
OK as I understand it 1150watts takes 1150 watts to run and more to start up and when it cycles from AC to just fan. Now you have to look at all running things and also your phantom draw ac also has a running draw and a start draw that are different Microwave also has a start draw and a run draw. If all things Cycle at the same time and it = more then you have Blown fuse Gen may stop making AC power and need to be stopped and restarted! most all elec devices give you this Info in their spec. One way is to go computer control or CAN or RV-C then you have the Cycle and start control on a system that keeps things from cycling together and you get away with less KW Gen or less AC from your cord to run the same equipment | ||
| john w. roan (Chessie4905)
Registered Member Username: Chessie4905 Post Number: 1724 Registered: 10-2003 Posted From: 71.58.71.157  Rating: N/A |
Fred once mentioned a capacitor package to help start AC with marginal capacity generators. Also, be sure to check the actual wattage output of any generator, as they usually rate them by surge output. | ||
| Rob Norgren (Robsedona)
Registered Member Username: Robsedona Post Number: 167 Registered: 11-2007 Posted From: 75.208.25.87 Rating: N/A |
capacitor package remember to put warnings around this People can get a big shock from a full Capacitor if they become the discharge path! |