Скачать или смотреть Save Money On Rooftop Solar--New ways to meet code requirements

Rapid Shutdown requirements for roof-mounted solar arrays have been expensive to meet and add equipment that is almost guaranteed to cause problems--until just recently. This video explores the code requirements for RSD and some emerging solutions that avoid extra expense and reliability problems.

This video is parapharased from a more complete article on my website: https://expertamateur.com/whats-with-... I hope you find this information useful.

Here's DerekSolarboi with great info on UL4731:    • Huge Breakthrough for Rooftop Solar! (UL 3...  

Relevant topic links: The NEC code manual, which is a publication of the National Fire Protection Association, is available free here: https://www.nfpa.org/codes-and-standa...

Product Links
All links are affiliate links that we earn a commission from. There is no extra charge for you at all but it helps support our channel.

If you want to do the more typical DC cutoff approach to meeting code, Tigo looks like the best solution. Signature Solar has the best prices on Tigo MLPEs and related equipment I've found
https://signaturesolar.com/tigo-15a-7...

RSD Button: https://signaturesolar.com/emergency-...

Inverters
Off-Grid

EG4 6000XP Off-Grid 120/240V Split Phase All-In-One Solar Inverter
https://signaturesolar.com/eg4-6000xp...

EG4 3kW Off-Grid Inverter 3000W Output
https://signaturesolar.com/eg4-3kw-of...


Hybrid

EG4 18kPV Hybrid Inverter Split Phase 120/240VAC UL1741, CEC
https://signaturesolar.com/eg4-18kpv-...

EG4 12kPV Hybrid Inverter 12000W Input, 8000W Output, 120/240V Split Phase similar to the 18KPV and the same versatility for $1500 less.
https://signaturesolar.com/eg4-12kpv-...

EG4 Flexboss21—more power than the 18K but requires the gridboss for grid connection. Cheaper than an 18K for for large off-grid. Up to three Flexboss’ can be connected to one gridboss for large installations. No support for 3 phase. https://signaturesolar.com/eg4-flexbo...

Batteries
Other 48V solutions, particularly rack mount systems, are more suitable for smaller installations or installations where smaller units of modularity is beneficial, but for me the lower cost per KWh, ease of installation, ability to scale rapidly, and appearance made wall mount batteries preferable.

Wallmount:
EG4 PowerPro Wall Mount All Weather 48V 280Ah 14.3kWh LiFePO4 Lithium Battery. https://signaturesolar.com/eg4-powerp...

EG4-WallMount Indoor Battery 48V 280Ah 14.3kWh Indoor Heated UL1973, UL9540A | 10-Year Warranty. $300 cheaper than the all weather model. https://signaturesolar.com/eg4-wallmo...

Server rack:
EG4 LL-S Lithium Battery | 48V 100AH | Server Rack Battery | UL1973, UL9540A | 10-Year Warranty Fire arrestors inside and EMP-hardened
https://signaturesolar.com/eg4-ll-s-l...

PV Panels
We really like the Aptos 370 watt bifacial panels but they don’t seem to be available now. https://signaturesolar.com/11-47kw-pa...

We’ll be buying these next: https://signaturesolar.com/preorder-a...

For managing the wiring we are using the EG4 PowerPro Conduit Box which fits perfectly between the 18K inverter and both styles of wallmount battery: https://signaturesolar.com/eg4-powerp...

To connect the batteries in parallel we are adding EG4 paralleling cable: https://signaturesolar.com/eg4-powerp...

Mounts
EG4's Brightmount is one of the best groundmounts we've tried: https://signaturesolar.com/eg4-bright...