jam
Tip: 0.5 = 30 minit • 1.0 = 1 jam
RM
Isi jumlah semua komponen (cap, relay, IC, dll.)
RM/jam
Contoh SOP: RM80–RM120/jam
%
Contoh: Inverter 15–25% • Biasa 10–15%
Formula: Total = (Masa×Kadar) + Kos Bahan + Overhead% (atas subtotal)