Electrical Installation Standard Measurements

What is a characteristic of EMTs compared to other electrical conduits?

They are more flexible and longer
They are more rigid and thicker
They are more expensive and heavier
They are less expensive and lighter (correct)

What is the primary material used to make FMC?

Aluminum or Steel (correct)
Plastic
Rubber
Copper

Where is FMC typically used?

In areas with high temperatures
In areas where flexibility is not required
In wet areas where moisture is present
In dry areas where it would be impractical to install rigid conduits (correct)

What is the purpose of a locknut?

To keep a nut from being accidentally loosened (C) Signup and view all the answers

What is another name for FMC?

Greenfield (B) Signup and view all the answers

What is the shape of the strip used to make FMC?

Helical (B) Signup and view all the answers

What is the primary purpose of an electrical conduit?

To protect and route electrical wiring in a building or structure (B) Signup and view all the answers

What type of conduit is usually made of coated steel, stainless steel, or aluminum?

Rigid Metal Conduit (RMC) (C) Signup and view all the answers

How far from the floor should a standard outlet be placed?

30 cm from the floor (A) Signup and view all the answers

What is Intermediate Metal Conduit (IMC) compared to RMC?

Heavier than EMT but lighter than RMC (B) Signup and view all the answers

How far from the door should a standard switch be placed?

10 cm from the door (A) Signup and view all the answers

What is the top of a panel board placed in relation to the floor?

180 cm from the floor (B) Signup and view all the answers

What is the primary purpose of a bushing?

To allow an electrical conductor to pass safely through a conducting barrier (B) Signup and view all the answers

What type of material is lighter in weight and lower in cost compared to steel?

Polyvinyl Chloride (PVC) (C) Signup and view all the answers

What is the primary function of a C-Clamp?

To ensure a conduit is safely secured (C) Signup and view all the answers

What is a characteristic of PVC conduit materials?

Resistant to moisture and many corrosive substances (C) Signup and view all the answers

What type of fittings are available for PVC conduit materials?

Most of the various fittings made for metal conduit (D) Signup and view all the answers

What is a suitable use for heavier grades of PVC conduit materials?

Direct burial and exposed work (B) Signup and view all the answers

What is the purpose of a junction box?

To provide a safety barrier and conceal electrical connections (B) Signup and view all the answers

What type of bend is used when there is an obstacle in the path of the conduit?

Offset bend (C) Signup and view all the answers

What is a utility box used for?

For convenience outlets, switch boxes, or small junction boxes (C) Signup and view all the answers

What special tool is used to bend PVC conduit in the field?

Heating tool (D) Signup and view all the answers

What feature of a utility box provides easier access and prevents the ground screw from protruding beyond the bottom of the box?

Raised ground screw (B) Signup and view all the answers

What is the primary function of a conduit?

To protect electrical connections and provide a safety barrier (D) Signup and view all the answers

What is the purpose of an elbow or angled bend in a pipe or conduit?

To change the direction of the pipe or conduit (A) Signup and view all the answers

What is a round saddle bend used for?

To go across circular objects like other conduits (C) Signup and view all the answers

What is another name for a round saddle bend?

Three-point saddle bend (B) Signup and view all the answers

What type of bend is used when the direction of the pipe or conduit needs to be changed?

Angled bend (C) Signup and view all the answers

What is the degree of an angled bend?

45-degree or 90-degree (B) Signup and view all the answers

What is the purpose of conduit bends?

To change the direction of the pipe or conduit (B) Signup and view all the answers