Hey all, while I've only been here for a short (but good) time, I've been cramming the forums and interwebs these last few weeks and gleaning the generous knowledge by yall, so hopefully I've graduated from iNoob to pretty-damn-inexperienced. I've gone and got the sum total of my learnings to date into a purty diagram with a bunch of details, power estimates and item specs links that I'd love to get yr feedback on!
Any gotchas, catastrophic oversights, suggestions?
It's a live whimsical board, anyone can comment:
https://whimsical.com/elec-diagram-QzadYSZ1ub4d25eF7eymgr@2Ux7TurymNFgqMdV36oS , or see image or PDF (with links) attached.
Qs, and background:
- I bought an RV converted pantech truck, adorned with star trek interior metallic paint, from QLD border (peak-covid Australian state border lockdowns) and got it back to Sydney, to strip and renovate. It's got some 12v loads I'm keeping (water pump, hot water heather, fan, exhaust fan, fridge, lighting circuit [replace with led strips]) and a ~10yrs old Mod sine 3kw (3kwM) 230v inverter, which was running off (now dead) lead-acid truck batteries pretending to be house.
I've been wondering if adding a 1kw Pure Sine Inverter (1kwPS)* is a good idea ($170ish), and dedicate it to: Laptops 2 x 45" 4k TV, Media Player, Xbox, Microwave (not at same time) - and whatever else it might manage. I'm thinking the rare power hungry stuff I might run would be fine on 3kwM (power tools mainly, tool/phone chargers) yet have read mixed reports re what does and does not work ok on mod sine - any experience re that here?
(* I'd planned to buy a new 3kwPS, but I've run out of $ and need to get in truck asap!).
- I've got a 300a MRBF fuse for battery + inverter, my 2 x 200ah batteries in parallel are rated for 300a max-discharge-5-secs, 200a consistent. While I thought I'd never pull 300a this calc now tells me that single-phase AC, amps: 300, volts: 230, power factor: 0.02 [1800w "real" use] = 1380w. Now I'm confused - pulling 1380w would pull 300a and blow fuse!? Is that wrong?
- I found these Blue Sea circuit breakers - very cheap here in oz, all have interrupt Capacity: 3000A @ 14.7V - Links: 25a, 30a, 40a - are these suitable?
- I'm using a 50a AGU fuse down from the 40a MPPT before Busbar, manufacturer confirmed the MPPT has 2 fuses and we're on a busbar with 3/0 awg wire, thinking this is ok?
Thanks chums! ?