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All-New Enphase M250 Microinverter!

Enphase Energy, the world’s leader in solar microinverter technology, used Intersolar North America 2013 as a platform to launch their latest generation microinverter:  Enphase M250

The company’s first generation microinverter, the Enphase M175 is considered to be the world’s first commercially successful microinverter. The M175 was followed by the Enphase M190 microinverter, which has built-in trunk cables and is compatible with both 60 and 72-cell solar modules.

Unlike the first two generations, the Enphase M215 microinverter featured a single mounting bracket and an improved cabling system, allowing up to 17 microinverters per branch circuit instead of 15 with the Enphase M190.

The Enphase M215 is a lightweight microinverter designed for 60-cell solar modules. Enphase M215 has a maximum output of 215W AC – with a 96.5% CEC efficiency rating. It also features a single-bolt bracket for dramatically simplified installation, which has been passed on to the 4th Generation Enphase microinverter, the M250.

 What’s different about the Enphase M250?

Though its design appears to be nearly identical to the Enphase M215, the Enphase M250 microinverter is rated at 250W AC, meaning it’s compatible with solar panels up to 300W.

But the key improvement to this model is that the M250 DC circuit already meets grounding requirements (NEC 690.35) because it’s isolated and insulated from the ground.  This improvement means that when you’re installing a Enphase M250s, you won’t need additional Grounding Electrode Conductor (GEC) in between each microinverter (copper). This not only simplifies installation, but enhances safety while saving material and labor costs.

The Enphase M250 microinverter comes with comes with the industry standard 25-year warranty.  The Enphase M250 is rated at 96.5% CEC efficiency- the highest efficiency for microinverters available.  Like the M215, it’s also NEMA 6 rated for severe temperatures and humidity.

When using Enphase microinverters (and an Envoy communications gateway), you can monitor the production of your system remotely with a web-based software called Enlighten.  The newest Envoy can handle up to 500 microinverters – or 100kW.

Enphase now offers Enlighten in two versions of the software: Enlighten Manager for solar professionals to maintain the systems they’ve installed, and MyEnlighten for system owners to monitor the output of their systems.

We’re excited to get some of these microinverters on some roofs. Check out the specification sheet for the Enphase M250!

 

Author: Tom Jackson

I believe clean, renewable energy is key to the evolution of society as a whole. Solar powers our planet, why not harness it to power humanity? Let's power our homes, our work, and our vehicles with solar energy. It begins with raising awareness and encouraging those around us to go green.

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