Eg4 6500 neutral problem

[Kevcando]

Just ran my 4 awg wires from my ( AC IN ) from the inverters to my main panel. Shouldn't have a problem fitting the hot wire under the 60 amp breaker but the common neutral buss bar will only handle 10 awg wire. How do you over come it do you run several # 10's off the buss bar to a insulated multi tap connector?

 

[PreppenWolf]

Picture? My 6500 does not have a common. Neutral busbar.

 

[sollap]

Look for a "Neutral Lug Kit" for your panel. There are different types made to add an auxiliary lug to your existing neutral bar.

 

[Kevcando]

Look for a "Neutral Lug Kit" for your panel. There are different types made to add an auxiliary lug to your existing neutral bar.

Sollap, thanks for the info didn't think of that

 

[Kevcando]

Picture? My 6500 does not have a common. Neutral busbar.

Neutral from inverter to your main buss bar.

 

[Zwy]

Just ran my 4 awg wires from my ( AC IN ) from the inverters to my main panel. Shouldn't have a problem fitting the hot wire under the 60 amp breaker but the common neutral buss bar will only handle 10 awg wire. How do you over come it do you run several # 10's off the buss bar to a insulated multi tap connector?

Back in the old days, the electricians around here used to take large neutrals and split the wires up between several screws. That wouldn't pass NEC today.

Plenty of choices, I've installed several neutral lug terminals on the neutral busbars over the years, usually for when a feeder is fed off the main panel. Some screw onto the busbar, some just fit into the busbar and use the existing screws. https://www.google.com/search?q=neu...7j33i160l3.7913j0j15&sourceid=chrome&ie=UTF-8

One other choice is to use a 3 lug Polaris style connector to bring 2 neutrals into 1. https://www.amazon.com/s?k=polaris+...HC&ref=pd_sn_dp_d_rs_sub_t1_vft_none_search_1

 

[PreppenWolf]

Neutral from inverter to your main buss bar.

Oh yeah I have that. I thought you were talking about a multiple port busbar.

 

[Kevcando]

Back in the old days, the electricians around here used to take large neutrals and split the wires up between several screws. That wouldn't pass NEC today.

Plenty of choices, I've installed several neutral lug terminals on the neutral busbars over the years, usually for when a feeder is fed off the main panel. Some screw onto the busbar, some just fit into the busbar and use the existing screws. https://www.google.com/search?q=neu...7j33i160l3.7913j0j15&sourceid=chrome&ie=UTF-8

One other choice is to use a 3 lug Polaris style connector to bring 2 neutrals into 1. https://www.amazon.com/s?k=polaris+...HC&ref=pd_sn_dp_d_rs_sub_t1_vft_none_search_1

What size wire do you think from the Polaris to the neutral buss ? Also do think I can combine all 4 from the inverters to 1 Polaris then to a 1 awg to the buss ??

 

[Zwy]

The neutral from the Polaris to neutral buss has to be sized according to the size of the hot conductors, NEC chart Table 250.102(C)(1). Grounded Conductor.

For my system, the neutral is the same size as the hots, #4. But that is just for a pair of EG4 6500EX, not 4. If I decide to add another pair of EG4 6500EX, I will run that pair in a run and combine in the panel. The #4 is about the max size you will get into the terminals on the inverter.

 

[Kevcando]

The neutral from the Polaris to neutral buss has to be sized according to the size of the hot conductors, NEC chart Table 250.102(C)(1). Grounded Conductor.

For my system, the neutral is the same size as the hots, #4. But that is just for a pair of EG4 6500EX, not 4. If I decide to add another pair of EG4 6500EX, I will run that pair in a run and combine in the panel. The #4 is about the max size you will get into the terminals on the inverter.

Thanks for the reply and confirming what i was thinking, just about ready to start mine up and trying to get this neutral thing buttoned up. Waiting for eg4 to come out with the video on neutral/ bonding. Do you have your bonding screw still in?

 

[Zwy]

Thanks for the reply and confirming what i was thinking, just about ready to start mine up and trying to get this neutral thing buttoned up. Waiting for eg4 to come out with the video on neutral/ bonding. Do you have your bonding screw still in?

My assumption is both are inside the units as I purchased before 10/22. I will be opening up the units to ensure the screws are present.

I do have a 3 pole neutral switching transfer switch installed and the installation is SDS (separately derived system). EGC on units is daisy chained.

 

[Kevcando]

I have a double pole to switch to bypass the inverters incase they take a sh*t but will add a neutral switch also.

 

[Zwy]

I have a double pole to switch to bypass the inverters incase they take a sh*t but will add a neutral switch also.

It would depend on the system and how you intend to bond N-G. Currently there is a thread https://diysolarforum.com/threads/n...ex-are-built-without-the-bonding-screw.53547/ where the discussion centers around Sig Solar removing the bonding screws in inverters manufactured after 10/22. You should read it and watch the video when Sig Solar releases it.

If you have the screws in place and don't remove them, then yes, you will need to switch neutral.