3.3 Battery Wiring
Before connecting all wiring, please take off the DC and AC terminal cover by removing their screws.
The DC terminal bolt size is M6 and the diameter of the DC cable holes on the box is 18mm.
It is suggested the battery bank be kept as close as possible to the inverter. The following table is a suggested
wiring option for DC cable with length from 1 meter to 5 meters.
Ring terminal:
Recommended breaker specification of battery for each inverter:
*If you want to use only one breaker at the battery side for the whole system, the rating of the breaker
should be X times current of 1 unit. “X” indicates the number of inverters connected in parallel.
Recommended breaker specification of AC input with single phase:
Note1: Also, you can use 50A breaker for only 1 unit, and each inverter has a breaker at its AC input.
Note2: Regarding three phase system, you can use 4 poles breaker, the rating is up to the current of the
phase which has the maximum units. Or you can follow the suggestion of note 1.
Recommended battery capacity
Inverter Parallel Quantity
Battery Capacity
(M3048BP)
Battery Capacity
(M5000H-48BP)
WARNING! Be sure that all inverters will share the same battery bank. Otherwise, the inverters will
transfer to fault mode.
Please follow the above minimum wire size requirement.
One cable is always best, but if there is a problem obtaining for example 100mm²cable, use 2*50mm²or
3*35mm² instead, as long as the square area adds up. Performance of any product can be improved by
thicker cable and shorter runs, so if in doubt round up and keep the length as short as possible.
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