Examining the efficiency of:
1) http://string-calculator.morningstar...1&modulenum=12
vs
2) http://string-calculator.morningstar...=6&modulenum=2
With the latter string configuration being realized with what I have now but with zero MPPT functionality using the Coleman Air 440HVA.
I believe I satisfy NEC 690.80 by having a single 50 amp manually reset breaker before the homerun wire hits the charge controller. Then again absorbing the NEC code and interpretation with ABYC understanding will bring more understanding of off grid boat PV installs.
Otherwise I'm seriously entertaining the thought of purchasing a TS-MPPT-60-600V-48-DB (With Disconnect Box) provided:
A) That I understand completely that I need or don't need another external 50amp 600v DC Disconnect Box.
B) The acquisition will make my panels more efficient.
C) The grounding of the TS-MPPT-60-600v-48-DB can be accomplished safely on my boat.
In step 10 of the manual for these Morningstar controllers they call for a GFPD and I'm looking for clarification on that point in a mobile marine off-grid application.
Posted by: albert682@yahoo.com
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