Church1182
New member
- Joined
- Jan 19, 2019
- Messages
- 21
So I am working on my own PV Powerwall to run my small workshop and I have one question in particular that I have not been able to find a clear, concise answer to.
Everything I've come across so far either discusses trying to use multiple inverters to drive a single load(Not what I need), or makes a statement similar to "use a smaller inverter for light loads and a bigger one to run heavier loads." with no discussion on how this is setup and things to do or not do.
So, can you use a single battery bank to run multiple inverters to drive separate loads?
Assume US 120V 60Hz AC outputs.
Example 1: A PV array runs through a MPPT charge controller that charges a battery bank. Aninverter(A) is connected to the + and - of the battery bankand the AC out is wired into the lights. A second inverter(B) is connected the +/- of the battery bank and is wired to the outlets in the shop. The outlets and lights all share a common ground wire. Neutrals return to respective inverters.
Example 2: APV array runs through a MPPT charge controller that charges a battery bank. Aninverter(A)is connected to the + and - of the battery bankand the AC out is wired into one leg of a breaker panel. Small loads are connected through standard AC breakers. A second inverter(B)is connected the +/- of the battery bank and is wired to the other leg in the panel and carries heavy loads.The AC panel has common/bonded neutrals from both inverters, but the hot sides are separate.
Is this essentially how this is done?
If not, how is it wired so you don't anger the pixies and release the magic smoke?
Everything I've come across so far either discusses trying to use multiple inverters to drive a single load(Not what I need), or makes a statement similar to "use a smaller inverter for light loads and a bigger one to run heavier loads." with no discussion on how this is setup and things to do or not do.
So, can you use a single battery bank to run multiple inverters to drive separate loads?
Assume US 120V 60Hz AC outputs.
Example 1: A PV array runs through a MPPT charge controller that charges a battery bank. Aninverter(A) is connected to the + and - of the battery bankand the AC out is wired into the lights. A second inverter(B) is connected the +/- of the battery bank and is wired to the outlets in the shop. The outlets and lights all share a common ground wire. Neutrals return to respective inverters.
Example 2: APV array runs through a MPPT charge controller that charges a battery bank. Aninverter(A)is connected to the + and - of the battery bankand the AC out is wired into one leg of a breaker panel. Small loads are connected through standard AC breakers. A second inverter(B)is connected the +/- of the battery bank and is wired to the other leg in the panel and carries heavy loads.The AC panel has common/bonded neutrals from both inverters, but the hot sides are separate.
Is this essentially how this is done?
If not, how is it wired so you don't anger the pixies and release the magic smoke?