Need HELP! Giandel 24v 3000/6000

[abndnce]

Hello all, I’m in need of some help!

I have an off grid skoolie application question. Here’s the pertinent system info:

-24v 100ah battery bank (expanding to 200ah eventually)
- Giandel 24v 3000/6000 inverter
- 60amp 120v AC panel
- 2x 20amp outlets
- 3x 15amp outlets


My issue: I bought the giandel because it had an AC terminal block. I was looking to wire directly from AC terminal block to an AC main panel. Based on the surge wattage (6000w) I calculated that I needed 4awg wire to supply the 60amp main, but upon pulling off the terminal block protection housing I see that it has tiny output terminals (picture attached). Does anyone know what these are rated for? I’m not sure how to wire my AC panel at this point.

 

[John Frum]

Hello all, I’m in need of some help!

I have an off grid skoolie application question. Here’s the pertinent system info:

-24v 100ah battery bank (expanding to 200ah eventually)
- Giandel 24v 3000/6000 inverter
- 60amp 120v AC panel
- 2x 20amp outlets
- 3x 15amp outlets


My issue: I bought the giandel because it had an AC terminal block. I was looking to wire directly from AC terminal block to an AC main panel. Based on the surge wattage (6000w) I calculated that I needed 4awg wire to supply the 60amp main, but upon pulling off the terminal block protection housing I see that it has tiny output terminals (picture attached). Does anyone know what these are rated for? I’m not sure how to wire my AC panel at this point.

That is the ac terminals.
3000 ac watts / 120VAC = 25 ac amps
25 ac amps / .8 fuse headroom = ~31 amps
For 25 amps use 10 awg wire with a 30 amp master breaker
For mobile applications stranded wire is recommended
The surge rating will be for mere milliseconds and is of no importance
There should be some big honking terminals on the other side for dc
3000 ac watts. / .85 conversion factor / 24 volts = ~147 dc amps
~147 dc amps / .8 fuse headroom = ~184 fuse amps
4 awg will be good for that.

 

[FilterGuy]

The 6000W surge can only be for a few seconds... Sizing your wire for that is overkill. 3000W at 120V is 25A. A 10AWG wire would be more than sufficient. With the style terminals shown, I would be tempted to put some split spade terminal lugs on the 10AWG.

 

[John Frum]

4 awg will be good for that.

Correction 2 awg by abyc rules.
2/0 awg by nec rules.

 

[abndnce]

Thanks guys, that makes me feel a lot better about the inverter. Giandel’s US customer service is nonexistent so I appreciate the help!

 

[Bud Martin]

I am curious if the L-N-G of the terminal strip actually matched the L-N-G of the AC outlet or not. I found that the Reliable Power inverter has the AC outlets wireed L and N in reversed compared to the AC terminal strip.

 

[John Frum]

I am curious if the L-N-G of the terminal strip actually matched the L-N-G of the AC outlet or not. I found that the Reliable Power inverter has the AC outlets wireed L and N in reversed compared to the AC terminal strip.

You mean N-L-G?
Its my understanding that electricians get into the habit of wiring ground then neutral and finally hot.

 

[Bud Martin]

You mean N-L-G?
Its my understanding that electricians get into the habit of wiring ground then neutral and finally hot.

I do not know what the arrangement of OP inverter AC output termninals is but it should be real easy to see if for example the L as labled on the terminal is actually connected to the L of the AC outlet or not, same for the other two termninals.