Recent content by BraydenFromEG4

It should accomplish the same goal, but whether or not it's allowed is likely up to your local AHJ. Interlocks are a pretty common way to implement a transfer from what I've seen. Not sure how easy/hard that is to get through an inspection though.

The inclusion of a manual transfer switch is helpful in the event that your solar system needs to be worked on (maintenance, expansion, etc.) but you don't want to lose power to the main load panel since you can just bypass the ESS with grid power. It's not a necessity, but that extra...

You don't need anything between your solar and the 18kPV's MPPTs to work, just as long as your PV strings are series'd to a high enough voltage to start the MPPT. Depending on where your panels are mounted, you may need MLPEs for 690.12 compliance but that's where the transmitter can help make...

I'm not super familiar with the ins and outs of SolarEdge power optimizers, but from what I've heard there are a number of them that only work properly with SE inverters and require an additional device to be unlocked for use with non-SE inverters. If that's the case, you won't be able to wire...

There wouldn't be any reason for Markus to try leading you astray, we all want your system to work flawlessly at the end of the day. The CTs are labeled as CT1 and CT2 as they input to different pins on the inverter, so it could cause problems if L1 is receiving the data from L2 and vice versa...

I'd have to check about adding SunSpec verbiage in since it is implied but not explicitly stated outside of just saying "built-in RSD transmitter". I don't think the 18kPV's manual is the place to add comments on how the Tigo systems are supposed to be configured though, otherwise it could...

I believe they will work as optimizers out of the box, but the CCA/TAP are required for monitoring and RSD function. They may work off SunSpec protocol if they don't have the CCA/TAP but I couldn't find anything about it after a quick glance on the datasheet. Yes, but the PV line to the...

The 18kPV does have the SunSpec transmitter within the unit, so utilizing the RSD or PV Disconnect will open the circuit and reduce the Tigo MLPEs voltage to safe levels. If you use the Tigo Optimizer line, you'd need the TAP/CCA to make use of all the features but the Fire Safety line is plug...

I would definitely recommend reaching out to SS's technical support staff to resolve the issues you're experiencing. That behavior is definitely peculiar, but it isn't something I've experienced or heard about at any length so I wouldn't be a good judge...

The EG4 LiFePower4 batteries now have an extended warranty period of 10 years when used with the 18kPV. There are many areas with incentives (or law) that require a 10 year warranty period for equipment. There will be more compliance developments in the near future to help prevent folks from...

As the title says, the EG4 18kPV is now CEC listed! This is another big step in keeping up with codes. While a fair number of DIYers don't have to worry about super strict regulation, there are plenty of people in the states that do, so we're happy to announce that we're doing our due...

They do not come with any means to satisfy ground fault protection built in. I didn't copy word for word, but yes that is a new term. I may have worded that a little poorly actually, because "detached structures, whose sole purpose is to support/contain PV equipment" is exempt like ground...

The 2023 code pretty much confirms this since it is reworded to say metal clad/metal raceway/underground don't require Arc fault protection IF not installed in or on buildings or detached structures. Doesn't mean 2020's version can't be interpreted to mean either or by an AHJ or inspector but...

Since you mentioned that you have a NG bond (and it sounds like it is from grid source), you may want to change setting 34 to enable so that you have you ac-in and ac-out neutrals connected. It is a bit safer, and has alleviated some problems that pop up like extra loud transformer buzzing. Good...

The battery connections are part of a paralleled bus, so you can use one or two cables for each polarity. The choice comes down to the gauge of wire that you're using. The manual recommends 4/0 AWG or larger for a single 10ft run, but I've found that two runs of 2/0 AWG is a bit easier to move...