AC output wiring.

[jake94]

Hello, I have a question regarding AC output wiring on all in one inverters that supply 240v. My rv takes a 50amp 240v connection for shore power if I'm not mistaken there are 4 wires inside ground, neutral, and a black and red hot. But on the output and input of some of these all in one inverters that say 240v I only see connections for a ground a neutral and 1 hot wire why is this? And how do you get 240v out of only 3 connections.

 

[Rocknemo]

You have L1, L2, neutral, and a ground

 

[timselectric]

But on the output and input of some of these all in one inverters that say 240v I only see connections for a ground a neutral and 1 hot wire why is this?

Those are European models.
230v (or 240v) single phase.
You need 120v/240v split-phase, for North America.

 

[RCinFLA]

Cheap low freq inverters only provide L1, L2 inputs with no input neutral connection.

Because of the output transformer 240/120vac arrangement with center tapped neutral, if AC input neutral is connected and there is imbalance in AC input L1-N-L2 voltage, there can be excessive transformer current attempting to balance grid L1-N-L2 voltage.

These inverters should not be grid connected. They can be fed from a 240vac generator.

LF inverters like Outback, Victron, and Xantrex have monitoring of neutral current so if AC input L1-N-L2 has too much imbalance they will release from grid.

 

[Mattb4]

Be aware that inverters (AIO) for other countries can be listed at 220-240vAC with only one hot leg and neutral leg as input and output. This is because they are not US standard split phase but Euro standard single phase.

 

[TommySr]

 

[timselectric]

View attachment 205305

FYI:
Those can't be used safely with bonded 230v single phase inverters, (European models) unless modified.

 

[TommySr]

Those can't be used safely with bonded 230v single phase inverters, (European models) unless modified.

timselectric, can you describe the modifications needed?

 

[timselectric]

timselectric, can you describe the modifications needed?

You have to disable the N/G bonding and make sure that the neutral is completely isolated.
This is fairly easy on some. Maybe not on others.

 

[jake94]

Thanks for the replies, that makes alot of sense because the victorn model I looked at had 4 input and out put connections.