PEC 6

Metal clad cables shall be supported and secured at intervals NOT exceeding

• 1,800 mm

• 1,500 mm

• 1,600 mm

• 2,000 mm

Sizes of building wires manufactured in the Philippines are standard in square millimeters. What is the area of copper conductor, which is next larger than 8 square millimeters?

• 12 mm²

• 10 mm²

• 14 mm²

• 9 mm²

According to PEC, the minimum insulation resistance level for neutral conductor in residential installations, which have solidly grounded system, shall NOT be less than this voltage, which one is this

• 1,000 volts

• 300 volts

• 600 volts

• 750 volts

Which of the following electric wires has the highest ampacity?

• 5.5 mm²

• 8.0 mm²

• 30 mm²

• 50 mm²

A 15-A or a 20-A branch circuit shall be permitted to supply lighting units and other utilization devices. The rating of any one cord and plug connected appliance shall NOT exceed a certain percentage on the branch circuit rating. What is this percentage?

• 80 %

• 90 %

• 70 %

• 60 %

Metal clad cables shall be permitted for installations in the following locations EXCEPT one. Which one is this?

• Signal circuits

• Branch circuits

• Direct burial in earth

• Ariel cable

Concealed knob and tube wiring shall be supported within _______ of each side of each tap or splice.

• 150 mm

• 125 mm

• 100 mm

• 200 mm

What is the insulation resistance acceptable by the Philippine Electrical Code for 600 V circuits consisting of 2.0 mm² conductor?

• 250,000 ohms

• 750,000 ohms

• 500,000 ohms

• 1,000,000 ohms

The usual function of a disconnect switched in high voltages circuit is to

• isolate from energized buses, equipment which are not in service

• Open or close the circuit under load

• Open the circuit in the event of an overload

• Maintain continuity of service

An overheated cord often indicates

• Defective cord

• Corroded terminals

• Corroded terminals and defective cord

• None of these