HELP!!!!!! with last step of inverter install

"boned"???

Or did you mean "bonded"??

If you mean bonded, then the answer is no!! NEC specifies a "sub panel" is to have isolated neutral bus bar, carried back to the main panel.

What exactly do you mean by "bonded" ? In Rvs the main dist panel for the 120v breakers is not bonded. The shore power source panel the pedestal receptacles are on is the bonded one.

So your sub-panel from the inverter needs to be carefully defined as to what you are doing.

ok, i'm hardwiring inverter to sub panel then to circuits that i want to operate in rv from inverter when shore power/gen set is off. The inverter has a transfer switch that gets the power from the main panel and if line is hot, the inverter cuts off

No neutral-ground bond anywhere in the RV and not in the new subpanel either.

Only bond should be at the power source such as the main utility panel(not your RV panel). If the inverter internally bonds the neutral-ground as part of normal operation that is OK.

All grounds need to be connected and to the RV frame also. This includes the inverter chassis and the metal subpanel case if applicable.

Ok, thanks all, that was the only issue holding me up on finish up the install. So sub panel is NOT to be bonded. The inverter is grounded to the frame, the metal sub panel case is grounded to the main panel using 3 wire romex....

marty

Sub panels are **NEVER** Bonded. in fact that is the difference between a SUB panel and a MAIN panel. NOTE the "Main" panel in a motor home is really a SUB panel

Now depending on the inverter you may set it to bond when in inverter mode.

But you do not bond the panels. EVER in an RV. Just the inverter and the generator get bonded. At the inverter and at the generator.

Shore power is bonded at the shore (Park end of things).

I'm curious why you need a subpanel? It is only 1200 watts which is equivalent to 10 amps.

beemerphile1 wrote:
I'm curious why you need a subpanel?

x2. That's a big job for not being able to remember what not to run off inverter.

beemerphile1 wrote:
I'm curious why you need a subpanel? It is only 1200 watts which is equivalent to 10 amps.

If the trailer in your picture is what you have, I suspect that you too have a "sub panel". If you have a breaker panel in your RV, you have a sub panel by definition.

Sometimes there are kids and non technical users that need a system that is automatic. Otherwise you come back from fishing to a dead battery or the inverter does not work. Then you have 20 minutes of generator hours to get enough charge to run the furnace that night.