Technical Notes
Do not use “double barrel” universal terminal lugs inside the FlexRack. They are too
large to maintain adequate clearance.
10. Use the 2.5” knockout be run to an inverter or raceway or use a hydraulic punch to knock out
your own holes for parallel cable runs via conduit or cord grip.
11. Like most busbars, the FlexRack
busbar is not listed. Your AHJ may
require a thermal scan at full
operating capacity for 1 hour to
demonstrate suitability. Here is our
thermal scan after running an
assembled FlexRack for 1 hour,
maxing out the maximum eFlex
amperage rating of 100A per eFlex):
12. You are allowed to use red tape to
denote positive cables or use red
cable.
13. Our example material lists show
#4/0AWG from the inverter to the FlexRack, as typical to a 9kW battery inverter. This cable
size can be reduced if installing small inverters or if abiding by NEC Table 400.5 Footnote 1.
Please verify you have the capability to crimp #4/0 compression terminals.
Example Material List for 4 eFlex + 1 Battery Inverter
Note: You are welcome to use other equivalent parts by other manufacturers.
Location
Item
Part Number Examples
Quanti
ty
eFlex to
busbar
3/8ths Compression Ring Lug AWG #4
Fine Stranded Straight
Burndy YAV4CLTC38FX
Thomas&Betts 54140
SelTerm MDH0438
12
3/8ths Compression Ring Lug AWG #4
Fine Stranded 45 Degree
Burndy YAV4CLTC38FX45
Thomas&Betts 54140UF
Panduit lcaf4-38h-l
4
9” AWG #4 Flexible Cable
CobraWire C9904B
4
13” AWG #4 Flexible Cable
CobraWire C9904B
4
Inverter
to
busbar
7/16ths or ½” / 12mm Crimp Ring Terminal
Straight AWG #4/0 Regular Stranded
Burndy YA28TC38
*Actual Wire Gauge Can Vary
Depending on Inverter
2
X” AWG 4/0 Regular Stranded
*Actual Wire Gauge Can Vary
Depending on Inverter
2