Xcel Final Exam Question Set - Practice-Ready Answer Guide

Xcel Final Exam Question Set - Practice-Ready Answer Guide What gloves should be used when working on 600-13,800 volts ? - answer - Class 2 gloves The minimum length for shot gun in underground switching is ? - answer - 8 feet No tools should be within how many feet of energetic things ? - answer - 10 feet Minimum approach distance for 8kv phase to ground ? - answer - 2' 2" Xcel minimum ground standard is ? - answer - 2/0 OSHA minimum ground stand is ? - answer - 2 What is the requirement for current flow ? - answer - Complete circuit voltage Ways a de energized cable can be reenergized ? - answer - Static Sackfeed Lightning Human error Every how many feet do you need a ladder or ramp in a trench ? - answer - 25 feet Excavation check list must be filled out at what depth ? - answer - 2 feet Positivity and negatively charged atoms are called ? - answer - Ion What wire runs between the 3 and 4 way switches ? - answer - Travelors What size wire is used to connect the neutral bus of a single phase transformer ? - answer - 4 copper According to Xcel energy construction standards a ground rod is required in a non metallic secondary pedestal ? - answer - true Pole depth - answer - 10 % + 2 feet dead end poles are 10% + 3 feet Isolation should be sanded with _______ sand paper ? - answer - 120 sand paper grit A pedestal is always to be served by _______ or _______ aluminum secondary ? - answer - 350 aluminum Maximum number of cable runs per phase to be served out of a 3 phase transformer ? - answer - 8 The jumper from top of cutout to overhead line is ______? - answer - 4 copper When is pole set to proper depth the manufacturer brand or pole tag should be how many feet above grade? - answer - 6 feet The lead wire from 1/0 pothead termination to bottom of cutout is made with ______ ? - answer - 2 copper a grounded wire system must be grounded how many times per mile ? - answer - 4 time per mile The minimum cable bending radius for Le shielding is ______ times the cable diameter - answer - 12 times Employees shall wear a full body harness with a shock absorbing lanyard, no more than ______ feet in length - answer - 6 feet Working handlines shall be a minimum of _______ inch in diameter - answer - 1/2 " All underground cables and apparatus energized above _____ volts shall be de energized and grounded before work starts - answer - 600 A four foot shotgun shall not be used in any switching operations - answer - false Whenever excavating is done within ______ of buried energized facilities it shall be done only by hand digging - answer - 24 inches Employees must be protected from fall hazards whenever they are ______ feet or more above a lower level - answer - 2' Maintenance / 4' Construction What class of rubber gloves should be used when working on lines energized between 50 and 600 volts - answer - 0 All Xcel Energy, insulating rubber blankets must be laboratory inspected and tested every _______ months - answer - 8 months All employees shall wear hearing protection when exposed to sound levels of ______ dBA or greater - answer - 90 Prior to cutting or handling any underground cable, the cable shall be _________ using only approved equipment - answer - Electrically tested No tool, equipment, device or apparatus shall be used while a properly authorized _________ card is attached - answer - Unsafe An electrical line that is separated from all sources of electrical potential but is not grounded considered _______ - answer - energized Opening or cutting the concentric neutral wire on underground cable can result in a primary voltage on the neutral - answer - True The _______ principle deals with using ground cables to control voltage by keeping all parts of a work zone the same potential - answer - Bonding Step potential is the voltage that can appear between a workers feet during ______ - answer - switching surges lightning phase to ground faults After the first step of " Perform switching procedu