My DB is under my staircase behind a door. Can I put AGM batteries on the floor in the same area. I read somewhere batteries must be in a separated vented area, away from switches

"Devices that could form a spark, such as overcurrent protective devices and isolators, shall be located outside of the battery enclosures" this is a problem for me

3 hours ago, William-Mc said:

My DB is under my staircase behind a door. Can I put AGM batteries on the floor in the same area. I read somewhere batteries must be in a separated vented area, away from switches

"Devices that could form a spark, such as overcurrent protective devices and isolators, shall be located outside of the battery enclosures" this is a problem for me

^^ That. You should not be installing acid based batteries close to other electrical appliances / equipment, as corrosion from the gas could cause damage. IF you absolutely have to go this route, build a box around the batteries and vent them directly to the outside. Put a fan on the inside to pull fresh air in, and another exhaust fan to pull it out in the open.

Thanks for the input, I have seen lots of photos with batteries directly below the inverter and DB, are they all in an open room. As far as I can tell from SANS 62458-2, Section 7.7 they should be 1.2m away. I assume if I put them against the opposite wall, 2m away from DB it should be ok. It is a wooden staircase, so gas can rise.,

 

48 minutes ago, William-Mc said:

Thanks for the input, I have seen lots of photos with batteries directly below the inverter and DB, are they all in an open room. As far as I can tell from SANS 62458-2, Section 7.7 they should be 1.2m away. I assume if I put them against the opposite wall, 2m away from DB it should be ok. It is a wooden staircase, so gas can rise.,

 

Exactly! Just goes to show how many people know, or follow the regulations. 

You are allowed to go further than the minimum specified in the regs.