PEC 3

An assembly drawing for a switchboard appears to have some errors. As supervisor, what steps will your take?

• report the apparent error to your supervisor.

• make the connection per drawing but be prepared to correct it if orders.

• hold the job until you have checked with the person who installed the plans.

• proceeds making the corrections on the drawing.

Branch circuit conductors supplying a single-phase motor shall have an ampacity NOT exceeding

• 100%

• 125%

• 200%

• 115%

Flat conductor cables maybe installed in any of the following locations Except one. Which one of this?

• in wet locations

• in damp locations

• on hard concrete flooring

• for branch circuits

For the installations of 2.0 mm² conductors in 600-volts circuits. What is the minimum insulation resistance allowed by the Philippine Electrical code?

• 500,000 ohms

• 1,000,000 ohms

• 750,000 ohms

• 250,000 ohms

The following are types of protection for single pase induction motors, EXCEPT

• overload protection

• ground fault protection

• under voltage protection

• single phase protection

The Philippine Electrical Code, Part 1 does not cover wiring of equipment installed within or to or from one of the following. Which is one is this?

• trailers

• Mobile Homes

• water crafts

• airplanes

Vertical clearances of all service drop conductors above roofs shall NOT be less than one of the following values.

• 2,000 mm

• 2,750 mm

• 3,000 mm

• 2,500 mm

According to its make, conduits maybe classified as

• rigid metal

• rigid non-metal

• flexible metal

• all of these

Which of the following wires has 75-ohm impedance?

• Foam-filled twin lead

• coaxial

• Flat twin lead

• none of these

In a battery room, it is important that no hot spot due to loose connections or sparking will occur, due to a serious event may happen. What can this be?

• an explosion might follow

• A short circuit may occur

• an electric shock can happen to electrician

• the electrolyte might overheat