10-08-2013, 06:00 PM
Geekhauler,
All RV electric systems are single phase systems. Three phase is for really large loads, 100 plus ton chillers for instance. A building served by a three phase entrance would have one of the phases selected for the RV plug.
All 50 amp coaches, Newell included, use a four (4) wire, 240 volt RV style connector plug. The connections are arranged in a diamond shape.
The top of the diamond is the neutral. The bottom of the diamond is ground. One side is leg one and the other side is leg two.
From leg one to neutral or ground is 120 volts. From leg two to neutral or ground is 120 volts. From leg to leg is 240 volts.
The exception is a RV park that has both legs on one 100 amp leg of incoming power. In that instance, leg to leg would be 0 volts and the 240 volt electric element in the Aqua Hot would not produce any heat. Same thing as if connected to 30 amp shore power.
A residential 240 volt three wire dryer plug (leg one, leg two, neutral) will not work correctly unless you know how to change to 4 wire plug and add the ground wire. No ground wire and my EMS will not connect the coach to shore power and will display an error code.
Hope this helps.
All RV electric systems are single phase systems. Three phase is for really large loads, 100 plus ton chillers for instance. A building served by a three phase entrance would have one of the phases selected for the RV plug.
All 50 amp coaches, Newell included, use a four (4) wire, 240 volt RV style connector plug. The connections are arranged in a diamond shape.
The top of the diamond is the neutral. The bottom of the diamond is ground. One side is leg one and the other side is leg two.
From leg one to neutral or ground is 120 volts. From leg two to neutral or ground is 120 volts. From leg to leg is 240 volts.
The exception is a RV park that has both legs on one 100 amp leg of incoming power. In that instance, leg to leg would be 0 volts and the 240 volt electric element in the Aqua Hot would not produce any heat. Same thing as if connected to 30 amp shore power.
A residential 240 volt three wire dryer plug (leg one, leg two, neutral) will not work correctly unless you know how to change to 4 wire plug and add the ground wire. No ground wire and my EMS will not connect the coach to shore power and will display an error code.
Hope this helps.
Rudy Legett
2003 Foretravel U320 4010
ISM11 450 hp Allison 4000R
Factory Authorized Aqua Hot Repair Center
Southeast Texas Area