EIM Q2 Review

What is the primary reason for installing pull boxes in conduit runs?

• A. To connect conduits of different diameters

• B. To make it easier to pull wires through the conduits

• C. To protect the conduits from damage

• D. To reduce the length of the conduit

What tool is most commonly used to ensure that conduits are properly aligned along walls and ceilings?

• A. Cable puller

• B. Level

• C. Multimeter

• D. Pipe cutter

According to standard electrical codes, what is the maximum number of 90-degree bends allowed in a single conduit run without a pull box?

• A. One

• B. Two

• C. Three

• D. Four

What is the primary purpose of the service disconnect switch?

• A. To isolate the entire electrical system for maintenance or emergencies

• B. To monitor the electricity usage

• C. To prevent power surges

• D. To regulate the current entering the house

Which component must be installed outside the house for the utility company to measure electricity usage?

• A. Grounding electrode

• B. Main breaker panel

• C. Meter base

• D. Service disconnect switch

What is the primary function of grounding in a service entrance installation?

• A. To give excess electrical charges a safe place to go

• B. To prevent corrosion of the wires

• C. To secure the conduits in place

• D. To support the weight of the conductors

Which of the following must be considered when running service entrance conductors?

• A. Ensuring proper clearances from windows and doors

• B. Running wires directly on the ground without conduits

• C. Selecting the wire color to match the house exterior

• D. Using uninsulated wires for easier installation

What is a key advantage of using PVC conduits in residential installations?

• A. High heat resistance

• B. Corrosion resistance and lightweight design

• C. Ability to withstand mechanical impacts

• D. Increased conductivity for wires

Why are non-metallic conduits are not suited for outdoor installations exposed to direct sunlight?

• A. Non-metallic conduits cannot conduct electricity efficiently, making them unsuitable for outdoor installations requiring grounding.

• B. Non-metallic conduits deteriorate when exposed to ultraviolet radiation, leading to brittleness and cracking, which compromises their protective function over time.

• C. Non-metallic conduits fade in color and become less visually appealing when exposed to direct sunlight.

• D. Non-metallic conduits retain excessive heat, which can cause internal wiring to overheat and fail in outdoor installations.

From the center mark of an elbow bend, there should be marks in the left and right side to determine which area should the heat be applied to perform the bend. How much distance should you move from the left and right side of the center mark?

• A. 100 MM

• B. 150 MM

• C. 200 MM

• D. 250 MM