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Step 1. Connect the equipment grounding conductor from the AC junction box to the terminal for grounding in the
distribution panel.
Step 2.
1
Connect hot conductors and neutral conductor in a general AC cable from the AC junction box to the
designated terminal in the distribution panel.
2
Then, connect conductors in transition cables to the AC junction box as shown above.
Step 3. Check the cables to verify they have not been pulled too tight or are hanging too loose. If necessary, fixate
them using the cable fixing holes on PV module frame with fixing holders, such as cable ties, so that the
cables do not touch the ground.
Transition Cable (Array ÷ AC Junction Box)
Conductor Color Description
L1 Black Line to neutral voltage 120VAC.
L2 Red Line to neutral voltage 120VAC.
Neutral White Common conductor used in the AC module for voltage measurements.
External Equipment Grounding Conductor (Array ÷ AC Junction Box)
Ground Green Conductor to connect normally non–current carrying metal parts of equipment together.
General Cable (AC Junction Box ÷ Distribution Panel)
L1 Black Line to neutral voltage 120VAC.
L2 Red Line to neutral voltage 120VAC.
Neutral White Neutral wire.
Ground Green Conductor to connect normally non–current carrying metal parts of equipment together.
There is a sample for AC output cables connection of single phase 240VAC below.
AC output single phase 240VAC
Connect the general AC cables in the following order:
00000
NL1L2
G
[An array of AC modules] [AC junction box] [Distribution panel]
Meter
2-pole
20A
X12
2-pole
( Determined
according to
the total
current)