Umehluko phakathi kweklasi I (class 1) luminair, class Ⅱ (class 2) luminair, class Ⅲ (class 3) luminair imi kanje:

Ububanzi bezinhlobo ezintathu zamalambu buhlukile.

Izinhlobo ezintathu zamalambu zinezinyathelo ezahlukahlukene zokuzivikela ekushayweni ugesi.

(1) Izindlela zokuvikela ukukhanya ekulweni nokushaqeka kukagesi zibanzi, ikakhulu ziboniswa ngezinyathelo ezintathu: eyodwa ukwahlukanisa okuyisisekelo; enye izindlela ezengeziwe zokuphepha; owesithathu ungaphansi kokuthinta othintekayo.

(2) Kunezinyathelo ezimbili kuphela zokuvikela ukumelana nokushaqeka kukagesi wezibani ze-Class II: eyodwa ukuvala okuyisisekelo; enye izindlela ezengeziwe zokuphepha.

(3) Izindlela zokuvikela ukumelana nokushaqeka kukagesi kulezi zinhlobo ezintathu zamalambu yilezi: ukusetshenziswa kwamandla kagesi aphephile futhi aphansi kakhulu awekho kude namandla kagesi.