โJul-12-2018 09:21 AM
โJul-20-2018 12:01 AM
myredracer wrote:
We don't use the autoformer often, but it has been a godsend when needed, esp. when it's been killer hot out.
โJul-19-2018 01:08 PM
solismaris wrote:Just because someone can get an AC unit to run "succesfully" on low voltage doesn't mean it's okay to do. Unfortunately, lots of folks do this without knowing the consequences.
I have used my microwave and AC (not together) even when the shore voltage is around the 100V mark. Successfully.
โJul-19-2018 11:18 AM
โJul-18-2018 06:47 PM
GordonThree wrote:I have thought about that item for just the A/C circuit. Would have to remove the PI-EMS in the 30 amp feeder.
Would this work for running just the AC on a 30 amp rig?
Tripp Lite automatic voltage regulator
โJul-18-2018 03:44 PM
pianotuna wrote:
Hi GordonThree,
I did consider adding one. Here are the specifications:
Voltage Regulation: +10%/-12%
Input voltages over 128V are reduced by 9.6%
Input voltages between 103 and 112V are boosted by 8.9%
Input voltages below 102V are boosted by 18.8%
Maintains usable 120V nominal output during brownouts as low as 87V and overvoltages as high as 140V
I would guess "yes". It would have to be placed after the circuit breaker for the air conditioner. It might be that there is too much start up surge for this unit.
I decided that the 4000 VA Sola Basic was a better fit as it can deal with an entire 30 amp RV (which is me)
โJul-18-2018 03:08 PM
โJul-18-2018 02:57 PM
โJul-16-2018 04:02 AM
bobndot wrote:
During this past heatwave, we were at a KOA with 95v at the peds and most of the Rv'ers that I spoke to had no idea there was low voltage and didn't seem concerned about it. :h It amazes me that so many people spend so much money on these rv's and are clueless to how they work.
โJul-15-2018 01:39 PM
โJul-15-2018 07:34 AM
โJul-15-2018 07:11 AM
pianotuna wrote:
Many of us have "cut the cord". That allows me to place the autoformer close to the RV.
I prefer my devices to be "plug and play" because if the autoformer should fail I would not want to have the issue of having to wire around it.
โJul-15-2018 07:01 AM
โJul-15-2018 05:59 AM
SoundGuy wrote:
As far as low voltage is concerned, if you've decided against an autoformer as a solution then your other best choice is an EMS with low voltage threshold disconnect. In that case it might be reasonably argued that a hard wire version wired in at the trailer end is a better choice than a portable version because any voltage drop will include that caused by resistance of the main service cable feeding the trailer. With a portable unit plugged in at the post it's only displaying source voltage at that location, before main service cable resistance results in further voltage drop. That's not to say one can't locate a portable at the trailer, even inside where a hard wire would normally be located, but I'd bet very few owners of portable EMS units actually do this and instead simply plug in at the post thinking that's all there is to it. ๐
valhalla360 wrote:
Hard wiring inside the rig adds convenience/security but doesn't make a lot of difference in the voltage that gets to the appliance.
-Boost then it drops over the length of the cord
-Drops over the length of the cord then boost
Especially if you need an extension on your cord because the pedestal is a long way away, having the booster near the pedestal means the cord is running at lower amps which reduces voltage loss in the cord and the likelihood of the cord/plugs overheating.
โJul-15-2018 05:25 AM
SoundGuy wrote:
As far as low voltage is concerned, if you've decided against an autoformer as a solution then your other best choice is an EMS with low voltage threshold disconnect. In that case it might be reasonably argued that a hard wire version wired in at the trailer end is a better choice than a portable version because any voltage drop will include that caused by resistance of the main service cable feeding the trailer. With a portable unit plugged in at the post it's only displaying source voltage at that location, before main service cable resistance results in further voltage drop. That's not to say one can't locate a portable at the trailer, even inside where a hard wire would normally be located, but I'd bet very few owners of portable EMS units actually do this and instead simply plug in at the post thinking that's all there is to it. ๐