General / Methods

Find a current copy of the NEC in your department.

-          On Hobbs desk

Explain what an "AHJ" is.

-          Authority having jurisdiction

Identify the required working clearances around electrical panels.

-          480v no grounded surfaces 3ft.

-          480v a wall 3.5ft

-          480v 2 MCC across from each other 4ft.

-          Height – from floor to structural ceiling or 6ft above equipment.

Identify three or more clearance violations In the department.

Identify the dedicated equipment space requirements above and around electrical panels.

-          Above 6ft or the structureal ceiling.

-          30in. width from the hinge.

-          Door must open 90*

-          Nothing can pertrude greater than 6in.

Identify two or more dedicated equipment space violations in the department.

Identify or find In the NEC the section that discusses motors, O/L protection, and O/L sizing.

-          430

Find in the NEC the section that discusses transformers, O/L protection,and bonding.

-          450

Identify the section of the NEC which discusses grounding.

-          250

Identify the section of the NEC which discusses overcurrent protection.

-          240

Demonstrate the proper way to terminate a three phase motor.

Demonstrate the safe and proper use of a fiberglass fishtape.

-          Make sure that all wires are de-energized.

Identify the various types of rigid metallic conduit fittings.

-          Elbows, capped elbows, bushings, expansion fittings, coupling, 3-piece coupling, T-coupling.

Identify the temperature and voltage rating for a THHN conductor.

-          90*c Dry / 75*c Wet and 600v – look for markings on the jacket of the wire.

Explain the purpose behind each different wire insulation colors.

-          White / gray / blue&white à neutral

-          Green&yellow / green / bare à Ground

-          Orange à External source

-          Black à current carrying conductor

Identify the instances under which a temporary installation is permitted.

-          You would fill one out if you had contractors bringing there own equipment.

-          Short term – 3 days

Long term – 3 days à 6 months