….,,,./.,./.,./../../../…./././././.,.,./.,./.,./.,./.,./.,./.,./.,./.,./.,./.,./.,./.,.,.,.
LADWP Electric Station Operator
Exam Prep 2026/2027 | Complete
Practice Questions & Answer
Explanations | Electrical
Substation Operations Study
Guide
Pole steps
135 deg apart
No less than 9' to first step
36" space between steps on same side
Vertical clearance between the lowest energized part of equipment
cut-outs or line disconnects and 0-750 volt conductors attached to:
4' from cross arms and extended racks
6' from 3 spool rack
Reference Rules 58.1C, and 58.3A
Pole risers
• Priority 1 - Keep riser(s) outside of the climbing space.
,….,,,./.,./.,./../../../…./././././.,.,./.,./.,./.,./.,./.,./.,./.,./.,./.,./.,./.,./.,.,.,.
• Priority 2 - Place on opposite side of pole
from oncoming traffic, if not possible to maintain climbing space place the risers facing traffic.
• Priority 3 - Best remaining location to accommodate direction of conduit, if riser(s) are to be
placed on the street side of the pole, the distance between the face of the riser and the curb face
should preferably be 18" if possible, but no less than 12".
High volt signs
approximately 30" below the lowest line conductor
energized in excess of 750 volts
6" below the equipment and above all secondary conductors and com
approximately 30 inches below the lowest exposed energized portion of the pothead.
Guy make ups
YBOG
Yellow- 1/4" 2375
Black- 5/16"
Orange 3/8" 5400
Green 7/16" 7250
Service make ups
#4 orange ORYOG
#2 red
,….,,,./.,./.,./../../../…./././././.,.,./.,./.,./.,./.,./.,./.,./.,./.,./.,./.,./.,./.,.,.,.
1/0 yellow
3/0 orange
336 green
Bullet colors
8 sol brown
6 sol green
34.5 mid span lateral
Min 35' from pole
Reduced tension span not to exceed 55'
Line conductor sizes for mid-span clamp 3/0 ASCR to 795 AAC and 1/0 to 350 CU
Max dead end strain on clamp not to exceed 1000 lbs. max wire size of 477 ASCR
& 4/0 CU at reduced tension
Single cross arm
Carriage bolt w nuts
Mechanical gain
18" da bolt. X2 nuts/washers
, ….,,,./.,./.,./../../../…./././././.,.,./.,./.,./.,./.,./.,./.,./.,./.,./.,./.,./.,./.,.,.,.
V brace 60"
12" machine bolt x 1 washer/nut
Double cross arm
Boney arm : has all the bolts a d v brace
Regular arm with mac gain
Center 2 nuts 2 washers
11 nuts 11 washers
Wood measurement 13" of wood, set arm bolts for 13" apart
Reme holes!
X (1) 12" v brace bolt
X (3) 24" arm bolt
Transformer
Manufacturer
Serial number
Class
Weight
Center hole to v brace
LADWP Electric Station Operator
Exam Prep 2026/2027 | Complete
Practice Questions & Answer
Explanations | Electrical
Substation Operations Study
Guide
Pole steps
135 deg apart
No less than 9' to first step
36" space between steps on same side
Vertical clearance between the lowest energized part of equipment
cut-outs or line disconnects and 0-750 volt conductors attached to:
4' from cross arms and extended racks
6' from 3 spool rack
Reference Rules 58.1C, and 58.3A
Pole risers
• Priority 1 - Keep riser(s) outside of the climbing space.
,….,,,./.,./.,./../../../…./././././.,.,./.,./.,./.,./.,./.,./.,./.,./.,./.,./.,./.,./.,.,.,.
• Priority 2 - Place on opposite side of pole
from oncoming traffic, if not possible to maintain climbing space place the risers facing traffic.
• Priority 3 - Best remaining location to accommodate direction of conduit, if riser(s) are to be
placed on the street side of the pole, the distance between the face of the riser and the curb face
should preferably be 18" if possible, but no less than 12".
High volt signs
approximately 30" below the lowest line conductor
energized in excess of 750 volts
6" below the equipment and above all secondary conductors and com
approximately 30 inches below the lowest exposed energized portion of the pothead.
Guy make ups
YBOG
Yellow- 1/4" 2375
Black- 5/16"
Orange 3/8" 5400
Green 7/16" 7250
Service make ups
#4 orange ORYOG
#2 red
,….,,,./.,./.,./../../../…./././././.,.,./.,./.,./.,./.,./.,./.,./.,./.,./.,./.,./.,./.,.,.,.
1/0 yellow
3/0 orange
336 green
Bullet colors
8 sol brown
6 sol green
34.5 mid span lateral
Min 35' from pole
Reduced tension span not to exceed 55'
Line conductor sizes for mid-span clamp 3/0 ASCR to 795 AAC and 1/0 to 350 CU
Max dead end strain on clamp not to exceed 1000 lbs. max wire size of 477 ASCR
& 4/0 CU at reduced tension
Single cross arm
Carriage bolt w nuts
Mechanical gain
18" da bolt. X2 nuts/washers
, ….,,,./.,./.,./../../../…./././././.,.,./.,./.,./.,./.,./.,./.,./.,./.,./.,./.,./.,./.,.,.,.
V brace 60"
12" machine bolt x 1 washer/nut
Double cross arm
Boney arm : has all the bolts a d v brace
Regular arm with mac gain
Center 2 nuts 2 washers
11 nuts 11 washers
Wood measurement 13" of wood, set arm bolts for 13" apart
Reme holes!
X (1) 12" v brace bolt
X (3) 24" arm bolt
Transformer
Manufacturer
Serial number
Class
Weight
Center hole to v brace
