Inverter wiring

[Big Steve]

Hi
Just purchased motorhome with solar,not an expert but the wiring on the inverter doesn’t look right,
There is a wire from the neutral pin on the plug on the AC side connected to the negative on the DC side is this correct (see pics)

 

[HTF]

Power company neutral wire is connected to ground so that your ground fault circuit breaker has a reference to trip. Ground on a campervan is the chassis and negative so, it's not wrong. The same happens to generators.

 

[HTF]

On my inverter, this is done internally halfway so, there is no "neutral". Both output lines are "live", measuring 115V to ground and 230V between them. Ground fault circuit breaker still works since it's referenced.

 

[Pudsey Bear]

This needs a grommet

 

[marchie]

This needs a grommet

View attachment 77205

Or a Wallace, or both, with one to hold the torch and the other to do the fitting, whilst the villain stalks across th background with a brick-sized prop marked 'Fuse' ... . If you can get power off either/both leads, that defeats the usual True/False state, so the male readers could be treated to a performance of 'The Wrong True, Sirs' or something like that ...

Steve

 

[Pudsey Bear]

Or a Wallace, or both, with one to hold the torch and the other to do the fitting, whilst the villain stalks across th background with a brick-sized prop marked 'Fuse' ... . If you can get power off either/both leads, that defeats the usual True/False state, so the male readers could be treated to a performance of 'The Wrong True, Sirs' or something like that ...

Steve

Can I have a tub of whatever it is you are floating on Steve?

 

[Geek]

Hi
Just purchased motorhome with solar,not an expert but the wiring on the inverter doesn’t look right,
There is a wire from the neutral pin on the plug on the AC side connected to the negative on the DC side is this correct (see pics)View attachment 77200

My concern would be the wires flapping around and going through the hole with no grommet. Both are a fire waiting to happen, as is the puny thickness of the cables.

2000watts at 12v is 167 amps. Rather more thsn those wires can sustain for more thsn a few seconds.

 

[Pudsey Bear]

Already pointed that out, but he's not been back since 7 minutes after the OP.

 

[Geek]

Hi
Just purchased motorhome with solar,not an expert but the wiring on the inverter doesn’t look right,
There is a wire from the neutral pin on the plug on the AC side connected to the negative on the DC side is this correct (see pics)View attachment 77200

The OP seems to have left the chat, but other people may be interested in this question.

Connecting the neutral to the chassis negative is not wrong, but it isn't good practice either.

Better to have both live and neutral floating, but do connect the earth to the van chassis.

In house wiring, the earth wire (now called the CPE) is linked to the supply company neutral (called TNS or TNCS) but that's not what should happen with power to a hookup point*: they should always be wired to an earth spike near the socket (known as TT)

*or indeed to a generator or inverter supply.

Which brings me to the other point. My little 150 watt inverter runs from a cig lighter socket powering a four-socket extension strip, presumably with no earth.

I've never checked in the several decades I've had it. It just works whenever needed (which is not often)

If you have a 2000 watt inverter, I'm wondering if there ought to be a bit more sophisticated protection. At least an RCD or RCBO. You can die from a shock out of one of these.