Specs (ComEd) Flashcards
7441
Alley arm
8003
1-phase transformer
8550
Grounding installation
7490
Preassembled fiberglass dead-end arm
3/C cable secondary
7475
7473
Vertical open wire secondary
7474
Vertical open wire secondary rack
7472
Cable secondary - w/bldg clearance
7436
Crossarm
7435
2 & 3-phase line pole
7430
Wood crossarm brace
7133
Line guy assembly
7131
Strut guy assembly
C0004
Reliability items
What direction does the Belleville washer face?
Concave (hollow) side toward flat washer (C0004)
What is the proper application of a double-coil washer?
Tighten nut completely, then back off 1/4 turn
What is the spacing for an alley arm brace bolt with 5’ brace and 8’ arm?
43”
What is the spacing for an alley arm brace bolt with 6’ brace and 8’ arm?
32 1/2”
What is the spacing for an alley arm brace bolt with 6’ brace and 10’ arm?
55”
*What is the spacing for insulators on a 3-phase 8’ alley arm, without arresters? (A to B, B to C, and C to pole through-bolt?
24 1/2”
24 1/2”
37”
What distance is from top of neutral space to pole top for alley arm line construction?
9’ except for
existing line poles without arresters - 48”
What locations are 10’ alley arms limited to?
Truck accessible locations only
*What is the spacing for insulators on a an 8’ alley arm with arresters?
? I don’t know how to read the spec
What brace is used for 10’ alley arms?
6’
*What is the spacing for insulators on a 10’ alley arm? (A to B, B to C, C to pole through-bolt)
32”
29”
49”
What is the neutral spacing for line poles with an 8’ wood crossarm, pole top?
48” or as written in equipment pole spec
What is the spacing for a wood crossarm, pole top to the through-bolt?
6”
What is the neutral spacing for 2 or 3-phase line poles with an 8’ wood crossarm, with arresters?
9’
What is the neutral spacing for 2 or 3-phase line poles with an 8’ wood crossarm, without arresters?
48”
