any recommendations needed for instalation

Its really straight forreward. Make sure all your solar cables are fully connected, use volt meter to test each string. Make sure the connectors snap all te way in. Once all stringd connected, flip all fuses to off and check to see output to controller light is on, turn off and on and check each string individually. I found gauge of wire a bit thin and upgraded fuses to 30 Amps. Have used box 3 years at full 2400 Watt capacity with no problems.

Is it just a plug n play or does it come separate

No you need to prep it. There is some wiring that needs to be done in the box before use.

If the ground wire is attached from the combiner box to the grounding rod, do the panels still need to be grounded?

If the panels are grounded to the same rod, I suppose you do not need to add a second grounding. In case of an electrical storm, the grounding of the combiner panel is of the upmost importance. I have used this connection to ground also the control charge, inverter and the DPS

Does this connect 4 100w panels in series or parallel?

If you connect each panel (string) individually to the PV Combiner Box, the panel strings will be combined in parallel. You can also connect two panel pairs or all four panels in series before connecting your four panel array to the PV Combiner Box. However you connect your four panel array to the PV Combiner Box, keep in mind that each string (up to four maximum) must be limited to 10 Amps current as specified by Eco Worthy. Also take note of the Eco Worthy specifications for maximum allowable voltage. Parallel panel connections multiply current from each panel and series panel connections multiply voltage from each panel. If you are using the four panel array to charge batteries, you should also use a charge controller. For a 400 Watt array, you should consider a MPPT Controller, which would work best with a higher input voltage achieved with series panel connections. Note, however, most smaller MPPT controllers are limited to 100 Volts input. Lastly, before selecting parallel or series panel connections, consider partial shading of the panels. If you expect partial shading, parallel connections between panels would work best. Refer to your panel manufacturer recommendations and panel specifications. Also, always take care to make sure your wire size complies with applicable codes and specifications for current and voltage.

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Reviews

W**R

Great product 6-string Combiner-Box

6-string Combiner-Box works perfectly on my 36 Solar panels in the 6S / 6P configurationEasy to install & Works flawlessly !

19.06.2025

J**E

Best value combiner on the market

The best value combiner on the market. Has everything you would want for a small off grid setup. If you want lightning protection and high end stuff look elsewhere. But for the basics this is great and doesn't cost a fortune. I've used these in multiple installs.

24.05.2025

J**S

Solar

Excellent quality this is second one i have used

10.04.2025

J**G

So far is great one year in

So far this has been working great, been over a year and was very easy to setup and install my arrays

3.03.2025

C**A

I really like this setup

I really like this setup. I have 6, 290w panels connected to this with a 100 ft, 8 guage run to my camper. I have the this combiner box mounted on an Aimes aluminum rack all grounded to a 4ft grounding rod.I did have one issue and one improvement that I made. The issue was with 2 of the connector pins not being seeted all thevway. This allowed then to back-out of the housings when I mated my cables to them. VERY difficult to see this and to catch it. Good troubleshooting and installation checks with a good Clamp Meter capable of measuring DC Amps will help a ton during your install.The improvement is with the wheather seal. I replaced it with a more robust, single piece strip to ensure it's watertight integrity. The gasket that is installed is in segments.These issues would not stop me from buying or recommending this unit. You could not make one of these yourself for the price paid. I am very pleased with this purchase.

23.04.2017

S**T

Great quality

This is a really nice box with great build quality. The mc4 connectors and modular design make it very easy to install. Price is great.

15.12.2024

S**.

Still working great after 6 months

I purchased this to upgrade my system as I added more solar and needed more robust combiner box. Im running about 7500 watts though it at peak sun.

10.11.2024

K**K

Easy to work with.

I purchased this combiner box quite a while back and installed it. Works the way it’s supposed to.

28.11.2024

ECO-WORTHY 6 String PV Combiner Box(Metal Case) & 63A Circuit Breakers for Solar Panels

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