All, My understanding on fuse sizing, when needed or to determine if they are needed, is to take the ISC of the module and multiply it by quantity of strings minus 1 and then multiply by 1.25 and multiply again by the ISC to give the amps of the system and if you go over the module fuse rating you need to fuse all strings.
I have had tow conflicting views today on this so I'd love any feed back asap. Thanks, -- Jason Lombard CSBA Open Hand Solar LLC. Pecos, NM. 87552 505 795 8646 [EMAIL PROTECTED]
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