1. Rau kev teeb tsa sab hauv tsev, qhov ncua ntawm kev txhawb nqa lossis hangers feem ntau yog 1.5-3 m; rau kev teeb tsa sab nraum zoov ntawm kab ntsug, qhov dav yog feem ntau 6 m.
2. Kev npaj cov kev txhawb nqa thiab cov hangers rau cov uas tsis yog- kab tawm yuav tsum ua raws li cov hauv qab no: thaum lub cable tais dav yog 300 hli, yuav tsum tau muab ib qho kev txhawb nqa ntxiv lossis hanger ntxiv rau ntawm qhov nruab nrab ntawm qhov tsis yog - kab tawm, ntxiv rau kom ua tau raws li lwm cov kev xav tau.
3. Thaum cov hlua cable tau teeb tsa hauv ntau qib, qhov chaw nruab nrab - mus rau - nruab nrab qhov sib nrug ntawm cov tiers yuav tsum yog 200, 250, 300, lossis 350 mm.
4. Rau cov seem ncaj ntawm cov hlau cable tais, ib qho kev sib txuas ntawm 20-30 mm yuav tsum muab txhua 50 m.
5. Cov ntu uas yuav tsum tau muaj kev tiv thaiv hluav taws yuav tsum siv cov hlau lossis tsis yog -combustible/flame- cov ntaub ntawv retardant.
