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Old 06-24-2024, 02:23 PM   #1
Mini-Skoolie
 
Join Date: Jan 2022
Posts: 21
solar diagram questions

I am planning my solar system and have some questions. I'll be doing a 48v system with 2 EG4 LL 48v batteries and a Eg4 3000 W inverter/charger. The inverter contains an mppt so that's why that is not part of my system. The manual emphasizes wiring the batteries in series with a 600 amp bus bar. It comes with a 125 amp breaker switch, and both batteries have a 125 amp breaker switch on them. Both the inverter and the batteries also have power on/off buttons.

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Here are my questions.

1: Are there any obvious real red flags in the system?

2: The manual for the inverter says 10 AWG for AC in AND out. My breaker box will be very close to the inverter. Will 10 AWG be good? What size wire should I send to the DC Fuse Panel if it'll be about 3 -5 ft?

3: Do I need to add a circuit breaker before my DC fuse panel or DC to DC converter? I've seen other diagrams with one and I want to know if that's necessary.

4: Since both the batteries and the inverter have on/off circuit breakers, is it reasonable to think I don't need an emergency on/off switch?

5: Do I need to ground to the chassis, and if so, from where? The inverter has a grounding terminal and my 30 amp shore outlet says grounding on that.

6: I'll be consulting my dad about wiring my breaker box, who is an electrician. But he doesn't have much solar or DC experience. Any feedback on what an typical electirican may not know about such things?

7: If I add alternating charging in the future, will I be able to route that to the existing bus bars?

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Old 06-24-2024, 02:30 PM   #2
Bus Geek
 
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Location: Swansboro,NC
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Year: 86
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look up mike sokul for wiring advice.
and i have a book that i also reference from harold barre that covers wiring rv and boat stuff.
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Old 06-24-2024, 04:44 PM   #3
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Location: Central Tx.
Posts: 2,179
Year: 1999
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Engine: DT466E HT 250HP - Md3060
Quote:
Originally Posted by Jolly Roger bus 223 View Post
look up mike sokul for wiring advice.
and i have a book that i also reference from harold barre that covers wiring rv and boat stuff.
Great advice!

I looked him up and his stuff is GOOD!

https://www.rvtravel.com/author/mike/
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Old 06-24-2024, 07:48 PM   #4
Mini-Skoolie
 
Join Date: Jan 2022
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Quote:
Originally Posted by ewo1 View Post
Great advice!

I looked him up and his stuff is GOOD!

https://www.rvtravel.com/author/mike/
Quote:
Originally Posted by Jolly Roger bus 223 View Post
look up mike sokul for wiring advice.
and i have a book that i also reference from harold barre that covers wiring rv and boat stuff.

He has 656 post. The first 50 are not related to my questions.
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Old 07-06-2024, 03:25 PM   #5
Skoolie
 
Join Date: Mar 2020
Location: Full-Timers
Posts: 183
Year: 2001
Coachwork: International
Chassis: 3800
Engine: DT-466e, AT-545
Quote:
Originally Posted by thetp23 View Post
He has 656 post. The first 50 are not related to my questions.
This made me laugh. Sometimes this forum is amazing, and other times you just never get a direct answer to your questions. Seems to be 50/50.

Iíd answer your questions directly, but Iím not informed enough. Never done 48v, and my 12v system was put in years ago, and I donít remember much.

However, you can try Reddit.com/r/solardiy
You can also try Will Prowseís forum: diysolarforum.com

Hope you get your answers!
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Old 07-08-2024, 06:45 PM   #6
Bus Crazy
 
Join Date: Feb 2018
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Quote:
Originally Posted by thetp23 View Post
He has 656 post. The first 50 are not related to my questions.



"He has 656 post", Who is "He"?
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