Coleman roof top heat pump

Vegas1 wrote:
Thank you all for your educational responses. I currently have an outdoor 20 amp receptacle. Using a heavy duty extension cord, I plug into the coach using a 15-30 dog bone and then a 30-50 dog bone. This provides power to the coach as well as keep the batteries charged. As in my original post, I was wondering if this was enough power to safely run the heat pump. Based on your responses, I will run the generator if I need to use the heat pump.:h

OK, the WEAKEST point of your connection is the 20 amp receptacle on your house. Now, unless it is configured this way (prongs) - !. one spade vertical and one Horizontal with the round ground below them, you have a 15 amp receptacle. 20 amp wall plugs are as I described above. The 15 amp is rated at no more than 15 amp. BUT, like most House plugs, that will NOT be the only receptacle on the house wiring for that circuit. There may be other appliances(receptacles) in your house using that same wire feed. The next weakest will be the internal HOUSE wiring that supplies that outside receptacle. Then the 3rd weak point is the 30 to 15 amp adapter. Notice it is a 30 to FIFTEEN adapter, NOT a 30 to 20 amp adapter. When you plug your RV to any shore power receptacle(15/20/30/50), there are always other 120 appliances that may be powered up. For instance, your Power Converter will be powered up and will pull from 1 to 5 amps depending on what it is doing. Your refer if on 120 will pull 2.5 amps minimum, so keep it off. The Roof AC/HP will pull from 12 amps to 16 amps depending on the model and how hot or Cold(HP mode) it is outside. As a General rule, in HP heat mode, it will pull higher amps than in AC (cool) mode. But no more than that 15/16 amps. So, be aware of what is going on and manage your loads. Doug