Montana Owners Club - Keystone Montana 5th Wheel Forum - View Single Post - What are the differences EMS

bncinwv · 09-08-2010, 09:36 AM

Andy,
An autoformer provides a voltage boost by lowering the amperage when there is a voltage drop coming in to the rig. Most autoformers are also equipped with a sacrificial surge suppressor. An EMS monitors the electrical feed to the rig and shuts down power if harmful conditions are detected, i.e. low voltage, high voltage, open grounds, surges, etc. An Autoformer will allow you to use your rig when there are low voltage conditions, and EMS will simply shut off the power supply to the rig until it is safe. The best solution is one of each (that is what I have installed). The most valuable asset I believe is the EMS, then the Autoformer. Hope this helps.
Bingo

09-08-2010, 09:36 AM	#2
bncinwv Montana Master Join Date: Feb 2007 Location: Winfield Posts: 7,327 M.O.C. #6846	Andy, An autoformer provides a voltage boost by lowering the amperage when there is a voltage drop coming in to the rig. Most autoformers are also equipped with a sacrificial surge suppressor. An EMS monitors the electrical feed to the rig and shuts down power if harmful conditions are detected, i.e. low voltage, high voltage, open grounds, surges, etc. An Autoformer will allow you to use your rig when there are low voltage conditions, and EMS will simply shut off the power supply to the rig until it is safe. The best solution is one of each (that is what I have installed). The most valuable asset I believe is the EMS, then the Autoformer. Hope this helps. Bingo __________________ Bingo and Cathy - Our adventures begin in the hills of WV. We are blessed by our 2014 3850FL Big Sky (previous 2011 3750FL and 2007 3400RL) that we pull with a 2007 Chevy Silverado Classic DRW CC dually.