[RE-wrenches] MC4 Y Connectors

[penobscotsolar at midmaine.com]

I'm with you Dick. I do not see it as a bad practice, as long as no more
than two strings are paralleled and protection is sized accordingly. Our
only concern is local jurisdiction interpretation. A UL certification
would get us over that hurdle, I believe.

Daryl



> Can someone please explain why this is a bad practice? My understanding is
> the fuse will still prevent backfeeding a fault by more than one
> additional
> string,
> the one paired by the Y connector. All the other strings are downstream of
> the fuse.
>
> Dick Ratico
>
> --- You wrote:
>> Wrenchers,
>> Has anyone used MC4 Y Connectors to combine strings?  This website
>> claims
>> that they are TUV Certified but does not list the manufacturer.  Seems
>> like best practice to fuse each string but wanted to see what others
>> think
>> about this product and the idea of fusing every two strings instead of
>> each individual string.
>>
>> http://www.solarpenny.com/MC4-Y-Connectors-609-4431.htm
>>
>> Al Frishman
>> AeonSolar
> --- end of quote ---
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