Which Emphase voltage for Mexico?

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  • Updated 3 years ago
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What would be the voltage of emphase inverters recomended for Mexico use (grid is 220VAC nominal)? 208 or 240 VAC.? Both seems to be in the range but is somebody able to give some feedback on experiences here?

Benoit Lebreton

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Posted 3 years ago

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Jacob Michals, Community Manager

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Hello Benoit,

Currently the Enphase microinverters are set to the grid standards of 240Vac and 208Vac.

For the M215, ranges on the are the following:

Nominal voltage/range: 208V/183V-229V ----- 240V/211V-264V
Extended voltage/range: 208V/179V-232V ----- 240V/206V-269V
Nominal frequency/range: 60.0/59.3-60.5 ----- 60.0/59.3-60.5
Extended frequency/range: 60.0/59.2-60.6 ----- 60.0/59.2-60.6

For further details, please download and review the M215 datasheet:

http://enphase.com/wp-uploads/enphase...

-Jacob

Benoit Lebreton

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Hello Jacob,

This is the information I've seen already on the manual, where 220V is within the range of both 208 and 240V types, but which one is more recomendable? 208 or 240VAC? I mean:

In the grid voltage range of 206 - 232 V, both types should work. In the range 179 - 206 V, only the 208V type will work. In the range 232 - 269 V, only the 240 V type will work. Below 179 or above 269 V, none of them will work.

Hence, for a nominal grid voltage of 220V, is it more comon to have the grid voltage between 179 and 206 or is it more common to have grid voltage between 232 and 269V?

I understand 208V voltage would be more recomendable in the first case and 240 V would be more recomendable in the second case.

Is there any feed back of experiences in Mexico which would guide us?

Jagged Ben, Champion

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I making an assumption, but almost certainly in Mexico a 220V service is a split phase service that is basically the same as 240V in the US. I just got back from a vacation in Mexico and all the services I saw were split phase (which was amazingly obvious from all the wires just hanging out in the open).

The real difference between 240V and 208V is that the former is split-phase and the latter is three phase. This is more important than the nominal voltage, since you need different cabling and connections.

Benoit Lebreton

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OK, I think you're giving me my answer.

But actually, the utility company CFE delivers 3 phases to residential areas, with 127 VAC between 1 phase and neutral, and 220 VAC between 2 phases.

Commercial or industrial aplication are diferents.

So I understand the 208 VAC is the type we should select for residential applications.

BetsyMePoocho

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Benoit,

We've been using M190's and Trina 230's for the past year in Baja. Have had very good results.

Our pueblo grid gets "moody" from time to time, but over all we get a range of around 112~116 vlts / 59.5~60.2 Hz. @ 30 amp.

We have a wood working shop and run 220vlt equipment and have had no issues.

CFE has paid us several visits and the regional manager for Baja Sur is very pleased we are contributing.

Also, last year CFE manager showed up with two "SunnyBoy" engineers to show them our set up..... It was kinda fun..... The SB's hinted around that they are working on similar little inverters....

We are very happy with our array, what it does, and especially Enphase....!!

Jacob Michals, Community Manager

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Nice post BetsyMePoocho.

Can you make your site public so other members can see your output?

-Jacob

BetsyMePoocho

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Thank you Jacob,,, I'll check, but I thought we were public....

BetsyMePoocho

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Jacob,

I checked our "settings" and have attached a .jpg.

If folks look at it from time to time I'll be happy to answer some questions about the "strange" morning and afternoon graph "dips"......... Luv our grid.....

I feel like we are small potatoes after reading and seeing some of the larger arrays out there.... Drool, drool....

Oh, we also adjust the angle for each season..... (I know, I know,,, but we like to do it....)