CMGT 235 ELECTRICAL EXAM
QUESTIONS AND ANSWERS
/. What color terminals on an outlet are associated with hot, neutral, and ground? -
Answer-✅Hot = brass (gold), Neutral = silver, Ground = green
/.What is best practice for splicing for a drop to a light switch? - Answer-✅Splicing
should be done in an accessible junction box, not in the fixture box unless designed for
it
/.When controlling a light from 4 locations how many switches are used? - Answer-
✅Two 3-way switches and two 4-way switches
/.What do receptacle configuration numbers and letters indicate? - Answer-✅Voltage,
amperage rating, and configuration type (NEMA designation)
/.How are weatherproof outlets shown on plans? - Answer-✅Typically labeled 'WP' or
shown with a weatherproof symbol/cover
/.What is the difference between grounded vs grounding conductor? Colors? - Answer-
✅Grounded conductor (neutral) = current-carrying, white; Grounding conductor = safety
path, green or bare
/.What is the common minimum wire size for commercial construction? - Answer-✅#12
AWG
/.What is the difference between stranded and solid wire? - Answer-✅Stranded =
flexible, multiple small wires; Solid = single conductor, stiffer
/.What is nonmetallic sheathed cable? Common name? - Answer-✅Insulated cable with
plastic sheath; commonly called Romex
/.What is a J-Box? Other names? - Answer-✅Junction box; also called pull box or splice
box
/.What is the difference between MC Cable and Conduit? - Answer-✅MC cable =
preassembled, faster install; Conduit = more durable, better protection, more labor
/.What are the most common types of conduit? - Answer-✅EMT, RMC, IMC, PVC
/.What are types of EMT fittings and their functions? - Answer-✅Couplings (connect
conduit), connectors (attach to boxes), elbows (change direction)
, /.What are names for galvanized steel conduit? - Answer-✅GRC (Rigid Galvanized
Conduit), RMC, IMC
/.What are the attributes of Smurf Tube? - Answer-✅Flexible, nonmetallic, lightweight,
easy to install (blue ENT)
/.What supports electrical raceway? - Answer-✅Strut channels; secured with clamps or
straps
/.What are common fixture types? - Answer-✅Recessed, surface-mounted, pendant,
high-bay
/.Where are fixture types used? - Answer-✅Recessed = ceilings; High-bay =
warehouses; Pendant = decorative/commercial; Surface = exposed ceilings
/.What are the advantages of LED lighting? - Answer-✅Energy efficient, long lifespan,
low heat, low maintenance
/.What is the minimum lighting for emergency egress? - Answer-✅1 foot-candle at floor
level
/.What is LOTO? - Answer-✅Lockout Tagout (safety procedure to isolate energy
sources)
/.What are unsafe methods not considered LOTO? - Answer-✅Turning off breakers
without locking/tagging
/.What are NEC voltage classifications? - Answer-✅Low (0-50V), Medium (51-1000V),
High (1000V+)
/.What are wire colors for voltages? - Answer-✅120/208V: black, red, blue; 277/480V:
brown, orange, yellow
QUESTIONS AND ANSWERS
/. What color terminals on an outlet are associated with hot, neutral, and ground? -
Answer-✅Hot = brass (gold), Neutral = silver, Ground = green
/.What is best practice for splicing for a drop to a light switch? - Answer-✅Splicing
should be done in an accessible junction box, not in the fixture box unless designed for
it
/.When controlling a light from 4 locations how many switches are used? - Answer-
✅Two 3-way switches and two 4-way switches
/.What do receptacle configuration numbers and letters indicate? - Answer-✅Voltage,
amperage rating, and configuration type (NEMA designation)
/.How are weatherproof outlets shown on plans? - Answer-✅Typically labeled 'WP' or
shown with a weatherproof symbol/cover
/.What is the difference between grounded vs grounding conductor? Colors? - Answer-
✅Grounded conductor (neutral) = current-carrying, white; Grounding conductor = safety
path, green or bare
/.What is the common minimum wire size for commercial construction? - Answer-✅#12
AWG
/.What is the difference between stranded and solid wire? - Answer-✅Stranded =
flexible, multiple small wires; Solid = single conductor, stiffer
/.What is nonmetallic sheathed cable? Common name? - Answer-✅Insulated cable with
plastic sheath; commonly called Romex
/.What is a J-Box? Other names? - Answer-✅Junction box; also called pull box or splice
box
/.What is the difference between MC Cable and Conduit? - Answer-✅MC cable =
preassembled, faster install; Conduit = more durable, better protection, more labor
/.What are the most common types of conduit? - Answer-✅EMT, RMC, IMC, PVC
/.What are types of EMT fittings and their functions? - Answer-✅Couplings (connect
conduit), connectors (attach to boxes), elbows (change direction)
, /.What are names for galvanized steel conduit? - Answer-✅GRC (Rigid Galvanized
Conduit), RMC, IMC
/.What are the attributes of Smurf Tube? - Answer-✅Flexible, nonmetallic, lightweight,
easy to install (blue ENT)
/.What supports electrical raceway? - Answer-✅Strut channels; secured with clamps or
straps
/.What are common fixture types? - Answer-✅Recessed, surface-mounted, pendant,
high-bay
/.Where are fixture types used? - Answer-✅Recessed = ceilings; High-bay =
warehouses; Pendant = decorative/commercial; Surface = exposed ceilings
/.What are the advantages of LED lighting? - Answer-✅Energy efficient, long lifespan,
low heat, low maintenance
/.What is the minimum lighting for emergency egress? - Answer-✅1 foot-candle at floor
level
/.What is LOTO? - Answer-✅Lockout Tagout (safety procedure to isolate energy
sources)
/.What are unsafe methods not considered LOTO? - Answer-✅Turning off breakers
without locking/tagging
/.What are NEC voltage classifications? - Answer-✅Low (0-50V), Medium (51-1000V),
High (1000V+)
/.What are wire colors for voltages? - Answer-✅120/208V: black, red, blue; 277/480V:
brown, orange, yellow
