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G Anderson · 10-21-2022, 01:27 PM

2003 Expedition--Had a wiring issue that took out the Inverter portion of on Zantrex Freedom 458 charger/inverter----trying to take a cheap way out bought a Vevor 1250 watt inverter and piggybacked it--Inverter putting out 121-117 volts but not getting to TV outlets---any Ideas ??? wanted to share picture but not sure how???

bigchick · 10-22-2022, 08:49 AM

first, did the tv work on the prior inverter?

does the prior inverter have both an a/c in and a/c out hardwired connection? or does it use 120 volt receptacles for the a/c out? since it is a combo inverter/converter i'm guessing it had a hardwired ac out which it would use for the passthrough function when shore power was present.

i looked real fast at the vevor inverter. it has 120 volt receptacle for its ac output. how did you wire these to what i am assuming is the harwired ac output from the prior inverter? also how are you planning on allowing shore power to pass through the new inverter which doesn't seem to support this function?

could it be that the tv was powered by either the inverter using battery power or shore power pass through? and now you don't have a way to power it using pass though? if this is true you will need to add a small external transfer switch ($50 or so).

G Anderson · 10-22-2022, 02:33 PM

Quote:

Originally Posted by bigchick

first, did the tv work on the prior inverter?

does the prior inverter have both an a/c in and a/c out hardwired connection? or does it use 120 volt receptacles for the a/c out? since it is a combo inverter/converter i'm guessing it had a hardwired ac out which it would use for the passthrough function when shore power was present.

i looked real fast at the vevor inverter. it has 120 volt receptacle for its ac output. how did you wire these to what i am assuming is the harwired ac output from the prior inverter? also how are you planning on allowing shore power to pass through the new inverter which doesn't seem to support this function?

could it be that the tv was powered by either the inverter using battery power or shore power pass through? and now you don't have a way to power it using pass though? if this is true you will need to add a small external transfer switch ($50 or so).

Yes TV used to work on original Inverter
Yes Xantrex Freedom 458 was hardwired--it is still hardwired for 120V input but the output hardwire has received a male plug so it could be plugged into Vevor 1250 watt Inverter.
Only time Inverter is used is when Not on Gen or Shower Power.
when Inverter is used the outlets behind the TV are dead--but work fine when on Gen/Shore Power ?

rgvtexan · 10-22-2022, 04:48 PM

When you ay the output of the 458 is wired to a plug, do you mean the wires from the 458 or the wires from the coach? the wires from the 458 are hot and should not be wired to a male plug. and pluged back into the new inverter.

Did your 458 use both sets of output wires?

Did you check the breakers on the Inverter Breaker Panel?

Do the TVs work on shore power or Gen?

twinboat · 10-22-2022, 05:37 PM

If the TVs still work on shore power, you must have chosen the wrong wires.

Are you plugging the plug into the old inverter while on shore power ?

If your looking for TV, just run a cord from it to the new inverter.

Persistent · 10-22-2022, 06:02 PM

Quote:

Originally Posted by G Anderson

Yes TV used to work on original Inverter
Yes Xantrex Freedom 458 was hardwired--it is still hardwired for 120V input but the output hardwire has received a male plug so it could be plugged into Vevor 1250 watt Inverter.
Only time Inverter is used is when Not on Gen or Shower Power.
when Inverter is used the outlets behind the TV are dead--but work fine when on Gen/Shore Power ?

Is this the model of Vevor power inverter?

https://www.vevor.com/modified-sine-...p_010488918331

If so, it does not appear to have an internal transfer switch to switch between shore power and inverter power. So it does not have a 120 volt input.

It cannot power the TV from shore power so you have it connected wrong. The Vevor can only power the TV from the battery. Shore power can run the xantrex battery charger. The xantrex can charge from shore power. Batteries then run the Vevor. The TV circuit must be connected to the Vevor output. The TV circuit must not be connected to the xantrex or shore power.

The Vevor is a "modified sine wave" inverter. The TV may not work on a modified sine wave. Many other modern electronics may not work on modified sine wave. Some appliances can be damaged by a modified sine wave.

Return it and get a "pure sine wave" inverter.

bigchick · 10-23-2022, 06:59 AM

Quote:

Originally Posted by Persistent

Is this the model of Vevor power inverter?

https://www.vevor.com/modified-sine-...p_010488918331

If so, it does not appear to have an internal transfer switch to switch between shore power and inverter power. So it does not have a 120 volt input.

It cannot power the TV from shore power so you have it connected wrong. The Vevor can only power the TV from the battery. Shore power can run the xantrex battery charger. The xantrex can charge from shore power. Batteries then run the Vevor. The TV circuit must be connected to the Vevor output. The TV circuit must not be connected to the xantrex or shore power.

The Vevor is a "modified sine wave" inverter. The TV may not work on a modified sine wave. Many other modern electronics may not work on modified sine wave. Some appliances can be damaged by a modified sine wave.

Return it and get a "pure sine wave" inverter.

i agree with this! you do not have a transfer or bypass feature. thus the devices plugged into the inverter will only work when the inverter is on and supplying power from the batteries.

you should be able to turn the inverter on when on shore power. this will allow the inverter to draw power from the batteries and produce 120 volt power for the devices plugged into it. the converter will use shore power to replenish the batteries.

of install an external inverter transfer switch. there are a couple of brands out there around $50. but doing this might cause you another problem if you're no aware of it. your prior converter / inverter has one a/c input connection that was used to power the converter and also pass through shore power to the inverter outputs. this is the connection you would move to the inverter transfer switch to pass through shore power to the inverter output devices. but if you did this you would lose the a/c input connection to the converter function. you may have to run a jumper between the old converter and the new transfer switch.

as far as modified vs pure sine wave i am not an expert. but pure sine wave sure sounds better to me! that is what you have at home!

G Anderson · 10-23-2022, 12:03 PM

Quote:

Originally Posted by rgvtexan

When you ay the output of the 458 is wired to a plug, do you mean the wires from the 458 or the wires from the coach? the wires from the 458 are hot and should not be wired to a male plug. and pluged back into the new inverter.

Did your 458 use both sets of output wires?

Did you check the breakers on the Inverter Breaker Panel?

Do the TVs work on shore power or Gen?

my 458 had 1 set input wires and 1 set output wires--I removed the output wires and re-wired them to the output side of Vevor
Will check breakers-----
Yes TV works fine on Shore or Gen power

twinboat · 10-23-2022, 12:33 PM

Removing the output wires would not allow power to the TV , ever.
You disconnected the circuit.

Shore power goes into the inverter input and then back out the inverter output, to the inverter powered outlets.

When shore power stops coming in, the inverter makes the power and sends it out to the inverter powered outlets.

G Anderson · 10-23-2022, 12:38 PM

Quote:

Originally Posted by Persistent

Is this the model of Vevor power inverter?

https://www.vevor.com/modified-sine-...p_010488918331

If so, it does not appear to have an internal transfer switch to switch between shore power and inverter power. So it does not have a 120 volt input.

It cannot power the TV from shore power so you have it connected wrong. The Vevor can only power the TV from the battery. Shore power can run the xantrex battery charger. The xantrex can charge from shore power. Batteries then run the Vevor. The TV circuit must be connected to the Vevor output. The TV circuit must not be connected to the xantrex or shore power

The Vevor is a "modified sine wave" inverter. The TV may not work on a modified sine wave. Many other modern electronics may not work on modified sine wave. Some appliances can be damaged by a modified sine wave.

Return it and get a "pure sine wave" inverter.

Yes thats the one---
Correct no 120V Input only 12V Input and 120V output
Assume by using original output wires everything should run as it used to---and yes the Vevor does put out 120V when turned on
The original Xantrex freedom 458 is a modified sine wave inverter

G Anderson · 10-23-2022, 12:47 PM

[QUOTE=twinboat;6341194]Removing the output wires would not allow power to the TV , ever.
You disconnected the circuit.

Shore power goes into the inverter input and then back out the inverter output, to the inverter powered outlets.

When shore power stops coming in, the inverter makes the power and sends it out to the inverter powered outlets.[/QUOTE

I only removed the output wires from the (hardwired) Zantrex
Charger/Inverter---then I installed a 90deg male plug so I could plug into the Vevor Inverter
The Xantrex Input wires are still hooked up because the Charging portion works
My outlets and microwave/waterheater work thru the breaker panel----and the Inverter only powers the TV receptacles when there is No Shore/Gen power present and only when I turn it on----Not sure how the power is supposed to get from the inverter to only the TV outlets ??? so I hooked it up the way the factory had it

__________________

Persistent · 10-24-2022, 03:31 PM

If the Vevor has 120 volts out and the output is connected to a 120 volt circuit, then that circuit is only powered when the Vevor is "on" and drawing power from the battery.

If the TV is not powered when the Vevor is "on" and shore power is "off", then the TV circuit and outlets are not on the circuit powered by the Vevor.

Understanding this is the start of the needed correction.

Different RV's have different inverter configurations. Finding out how yours is wired is necessary.

Some troubleshooting processes may help.

1 Find out what 120 volt devices do work when inverter is "on" and shore power is off. What circuit are they on? What circuit breakers turn that on and off?

2 What circuit breakers turn the TV "off" when plugged into shore power?

3 Does tripping the xantrex circuit breaker turn the TV "off"?

4 Post pictures of the RV circuit breaker panel. Post make and model of circuit breaker panel.

5 Post picture of xantrex. Be sure to post one of the connections.