CIC Grade A Electrical Trade Test case studies
CIC Grade A Electrical Trade Test · Put your knowledge to work in context.
The Trade Test for Grade A Electrical Work is one of the trade tests administered by the Construction Industry Council (CIC) of Hong Kong. The CIC describes its trade tests simply: "The CIC provides trade tests for the construction workers." Within the CIC's Trade Tests section, the Grade A Electrical Work test sits under Construction-related E&M Trades, alongside the Construction-related E&M Trade Tests, the Construction-related E&M Intermediate Trade Tests and a published Test Schedule. The CIC Grade A Electrical Trade Test case studies are 5 cases and about 5,727 words.
1Repeated RCBO tripping on a restaurant kitchen radial
An 80-seat restaurant in Kwun Tong was fitted out six months ago. The kitchen sub-board is fed from the landlord's intake through a 63 A MCCB and contains four 30 mA Type AC RCBOs.
1,198 words, about 6 min2Reusing a 6 mm² submain for a replacement 15 kW chilled-water pump
A chilled-water pump serving a 12-storey office is being replaced. The new pump is 15 kW, 380 V three-phase, power factor 0.85, efficiency 0.90, giving a full-load current of about 30 A.
1,059 words, about 5 min3Main protective bonding after a plastic pipe insert in an industrial unit
Your company is wiring a 200 m² light-industrial unit in Tsuen Wan. The supply is 380 V three-phase four-wire TN-C-S (PME) from the utility, rated 100 A, with the meter and main switch in an intake cupboard.
1,106 words, about 6 min4MCCB replacement in a trading mall: labels, back-feeds and a supervisor in a hurry
Your team is scheduled to replace a burnt-out 63 A MCCB feeding a tenant's submain in a busy shopping mall in Sha Tin. The mall is trading and the board is in a locked landlord's electrical room off the service corridor.
1,127 words, about 6 min5Adding a 7 kW EV charger to an existing 60 A single-phase house supply
A village house in Sai Kung has a single-phase 220 V supply with a 60 A main fuse and a 60 A consumer unit at the intake. The existing circuits are lighting at 6 A, two 13 A socket radials with an assessed diversified demand of 20 A, an 8 kW electric shower on a 40 A circuit, a 3.5 kW air-conditioner on a 16 A circuit, and a 3 kW water heater.
1,237 words, about 6 min