====== Electrical Connection ======
PWS2-30K-NA electrical wiring should strictly following the following requirements. Please read the following carefully.
**DANGER**\\ Before electrical connection, please ensure that all switches of energy storage system are in “OFF” . Otherwise, the high voltage of the inverter might cause an electric shock risk.
**WARNING**\\ Incorrect wiring operation might cause operator casualties or permanent equipment damage. \\
Only qualified professional can conduct wiring work. \\
Before electrical connection, remember that the inverter has 2 supplies. Electrical operator should wear protective devices such as helmet, insulated shoes and protective gloves.
**CAUTION**\\ The cable colors mentioned in all electrical connection diagrams in this chapter are for reference only. Cable selection should comply with local cable standard.
===== Bottom view=====
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^No. ^Description^
|1 |DC waterproof tube + |
|2 |DC waterproof tube - |
|3 |Ethernet waterproof terminal |
|4 |RS-485 waterproof terminal |
|5 |R-EPO waterproof terminal|
|6 |AC waterproof tube|
|7 |AC disconnect|
|8 |Fan box|
===== Bottom cover removal =====
To ensure electric safety, the electric wiring terminal of the case is closely blocked by the bottom cover. Before wiring, remove the bottom cover.\\
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===== Power terminals =====
The power terminals of PWS2-30K is shown in the image below.
The cable colors, grounding, wiring should consist to the local electrical code.
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The recommended cable size:
* Line: AWG 8
* Neutral: AWG 8
* PE: AWG 8
* DC: AWG 4 (better consult your battery manufacturer)
In some contries, such as United States, cables shall always be enclosed by conduits. In this case, the waterproof caps should be removed.
===== Bottom cover restore =====
After power cables installed properly, the bottom cover should be reinstalled.