Advice needed for electric pedestal tester

Easy and cheap plus all parts are readily available
http://www.myrv.us/electric/Pg/tester_30amp.htm

Protect or correct? I prefer to correct.

SoundGuy wrote:
Both of these statements infer that the Progressive EMS unit is using this 136" time delay to analyze the input signal before deciding it's stable enough to pass along to the trailer. This is incorrect as the analysis takes no time at all - rather, delay is set at 136" in order to protect an A/C compressor, preventing it from restarting until head pressure has diminished to a safe level. Progressive EMS delay for the portable versions is fixed at 136" but delay for the hard wire versions can be shortened to a more convenient 15" by removing an internal jumper. I took this one step further with my own EMS-HW30C by wiring in an SPST switch in place of the jumper so I can simply switch between the two delay times, 15" or 136", rather than have to open the case and fool with the jumper. :B

OK and say intermittent fault every 30 seconds. Does not the timer reset each time?
Or does PEMS just check the instant the timer expires and calls good or no?

X10 on the PI. It checks the line and has spike and low voltage protection, with a lifetime warranty.

time2roll wrote:
http://www.progressiveindustries.net/services

I recommend a monitor that will not allow power until all is correct and stable for about a minute.

theoldwizard1 wrote:
I second this !

The fact that it does not pass power for the first minute or two will get you the first couple of times you use it.

Both of these statements infer that the Progressive EMS unit is using this 136" time delay to analyze the input signal before deciding it's stable enough to pass along to the trailer. This is incorrect as the analysis takes no time at all - rather, delay is set at 136" in order to protect an A/C compressor, preventing it from restarting until head pressure has diminished to a safe level. Progressive EMS delay for the portable versions is fixed at 136" but delay for the hard wire versions can be shortened to a more convenient 15" by removing an internal jumper. I took this one step further with my own EMS-HW30C by wiring in an SPST switch in place of the jumper so I can simply switch between the two delay times, 15" or 136", rather than have to open the case and fool with the jumper. :B

We also use a Progressive Industries device that will not allow incorrect power into the rv, and tells you what is wrong. It will also cut off if voltage gets too high or too low.

time2roll wrote:
http://www.progressiveindustries.net/services

I recommend a monitor that will not allow power until all is correct and stable for about a minute.

I second this !

The fact that it does not pass power for the first minute or two will get you the first couple of times you use it.

SoundGuy wrote:
However, this will only check the line source, not do anything about it if an error is found or later develops. In the long run you'd be far better off investing in a Progressive Industries EMS that constantly monitors the situation and will take action if necessary.

pasusan wrote:
Yeah, I'm with you about the PI EMS - I've got one hardwired into my trailer. At this point don't want to duplicate that in our B and will feel better if at least testing before connecting. Will look for that Prime tester - thanks...

Well you could still have your cake and eat it too by wiring your hardwire EMS into both rigs using standard RV connectors, just as I did. That way you can use your one EMS in whichever rig you want, at any time. :B

EsoxLucius wrote:
This is what I have used for three years.

https://www.amazon.com/TRC-AECM20020-3-012-Electra-Digital-Monitor/dp/B001O2SQXQ

Does the TRC check for open neutral, open ground, or reversed polarity as does the Prime Products AC Line Monitor that costs half as much?

This is what I have used for three years.

https://www.amazon.com/TRC-AECM20020-3-012-Electra-Digital-Monitor/dp/B001O2SQXQ