© 2022 Hoymiles Power Electronics Inc. All rights reserved.
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Single-phase Microinverter HMS-350/400/450/500-1T-NA
4.3 Installation Tools
Besides tools recommended below, other auxiliary tools can also be used on site.
Screwdriver
Multimeter
Socket Wrench or Allen wrench
Marker pen
Diagonal pliers
Steel tap
Wire cutters
Cable tie
Wire stripper
Torque and adjustable wrench
Utility knife
Safety glove
Dust masks
Protective goggles
Safety shoes
HMS-350-1T-NA HMS-400-1T-NA HMS-450-1T-NA HMS-500-1T-NA
Maximum over current
protection device (OCPD)
Maximum number
per 12AWG branch
10@208 V
12@240 V
9@208 V
10@240 V
8@208 V
9@240 V
7@208 V
8@240 V
20 A
Maximum number
per 10AWG branch
15@208 V
18@240 V
13@208 V
16@240 V
12@208 V
14@240 V
10@208 V
12@240 V
30 A
4.4 AC Branch Circuit Capacity
Hoymiles HMS-350-1T-NA/HMS-400-1T-NA/HMS-450-1T-NA/HMS-500-1T-NA can be used with 12AWG or
10AWG AC Trunk Cable and the AC Trunk Connector which are provided by Hoymiles. The number of
microinverters on each 12AWG or 10AWG AC branch shall not exceed the limit as shown below.
Note:
1. The number of microinverters that can be connected to each AC branch is determined by the ampacity (also
known as current-carrying capacity) of the cable.
2. 1-in-1, 2-in-1 and 4-in-1 microinverters can be connected to the same AC branch, as long as the total current
does not exceed the ampacity specified in local regulations.
