Recent content by Axotopia

Update: The Electrical Inspector just inspected and approved the batteries 30mins ago. Signature Solar (SS) had been exceptionally supportive and responsive throughout the process of exchanging the LifePower4s with units that has UL listing factory printed on the chassis. Have to thank the...

If you intend to run parallel strings per MPPT, choose panels output that will match the MPPT max current for the number of parallel strings you intend to install. I run 540W panels in my arrrays, which means I cannot parallel 2 strings per MPPT on my Sol-Ark 15K which max out at 26A per MPPT...

Just passing on what i learned from forum member pvgirl on one of my posts on conductor battery size: the Temco welding cable rating may be for conductor in free air. Not sure if you any of your conductors are in conduits, if you do, may need to look at the NEC table 310.16. Looks similar to...

I'll post an update after EG4 contacts me on a way forward. The UL Label requirement appears to be of the standard checklist items for my area, could be a recent change. The Electrical Inspector was looking at every single piece of equipment for a Nationally Recognized Testing Lab (NRTL) label...

Kinda of suspect an abnormally in the data, thus the OP. Wanted to make sure it is not a some kind of (LDE) EMP induced current, and regret not getting the EMP model from Sol Ark. Would be comforting to know it just a Cloud Glitch. Other than the turbulent weather lately, there was a spike at...

Wonder if anyone noticed a night time current being induced on their PV system on the night of Dec 1 in the Puget Sound area? Just noticed a weird power production in the dark between 4:04am to 5:14am, then another spike around 5:44am. 'Sunrise' if you call it that in this gloomy latitude was...

I am wondering if anyone else is having EG4 LifePower4 failing Electrical Inspections. Just failed Inspection on the Solar PV System install this week. The inspector noted that the (8) LifePower4 I installed do not have UL or other NRTL labels on the batteries. Inspector noted without an UL...

Wow! You rock! Thanks for your detailed walk thru on the NEC, definitely a minefield for the DIY! Sounds like (4) 3/0 Copper may be the bare minimum using the (2) pairs battery terminals in the Sol-Ark 15K inverter; or 500mcm Copper if using something like the HG Sol-Ark 15K Bus Bars.

Thanks for getting into the NEC, definitely a whole other world but great reference. Think I kinda get what you are saying ... The DLO (also listed as RHH/RHW-2 for NEC compliance) rating is based on Table 310.17 [Ampacities of Single-Insulated Conductors in Free Air], which is 405A for 4/0 at...

Wondering what cable type everyone is using. Here's my confusion, does cable current capacity matters or does it boil down solely to wire size. For example .. for 4/0 @ 90^C Wet/Dry is roughly XLP/XHHW-2/USE-2/RHH/RHW-2 Aluminum = 205A XLP/XHHW-2/USE-2/RHH/RHW-2 Copper = 260A DLO = 405A ...

Hi ALL, new on forum, just putting together my system and wondering if I can get some advice on sizing cables from a Sol-Ark 15K to (2) battery racks ( w/(4) EG4 LifePower4 48V on each rack). I am planning to use (4) 1 AWG DLO(RHH/RHW-2 listed) copper cables from the Sol-Ark 25K inverter to the...