Between the relay box and the controller cable is best to use 3 or 4* 1mm5^2 allocating one wire for power <+12 V UPS> a shorting to other “strengthen” mass of the system (mainly for relays).
Kati ya sanduku relay na cable mtawala ni bora kutumia 3 au 4 * 1mm5 ^ 2 kugawa moja kwa waya nguvu <; 12 V UPS>; shorting kwa wengine ” kuimarisha ” molekuli ya mfumo (hasa kwa ajili ya RELAYS) .