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What is the name of the code that is the accepted standard for all electrical wiring in the United States? - ✔✔National Electrical Code What is the maximum distance between supports of a vertical raceway, based on NEC Article 620-32? - ✔✔15 feet What type of flex would be used to pipe a switch in a wet location? - ✔✔Liquidtight Flex What is the name for the complete metal system of duct, conduit and flex that protects the wiring? - ✔✔Raceway How is the work divided when planning piping and wiring of an elevator installation? - ✔✔Hoistway, car and machine room What document may be the only place to look for such information as type of fixtures, car panel, fire service floor, etc? - ✔✔Job abstract What information is shown on a pull sheet? - ✔✔Terminal connections Which type of diagram shows a simplified path from positive to negative for all components in a circuit? - ✔✔Straight line How are multiple installations of traveling cables numbered for a single car? - ✔✔From the rail regardless of placement in the hoistway What is shown on the final layout? - ✔✔A plan drawing and an elevation giving dimensions
In the circuit shown, which is the common wired for the second level? - ✔✔DC+ How are wire sizes larger than 4/0 measured? - ✔✔In circular mils What is the abbreviated term for current carry8ing capacity? - ✔✔Ampacity What is the minimum size wired for lighting circuits in an elevator installation? - ✔✔# What is the special about wire used for the interlock circuit? - ✔✔It must be rated for 200 degrees C What is the smallest wire that is permitted in an elevator installation? - ✔✔# When bending conduit, what is the maximum number of decrees of bend allowed between access points? - ✔✔90 degrees What is the reference point on the thin-wall bender for the finish line of a back to back bend? - ✔✔The star point What is the total in degrees of the bends in a three-bend saddle? - ✔✔90 degrees You have 10' length of ¾" rigid conduit which needs to have a 90 degree bend with a 16" stub height. With a 7" take- up, what is the distance from the end of the pipe to the mark where the hickey arrow is aligned? - ✔✔9 inches 21 - ✔✔Size of conduit is determined by the inside diameter 22 - ✔✔NEC states wire used in elevators must have flame retardant insulation 23 - ✔✔Thin wall pipe, the radius of the bend is controlled by the bender
When a vertical raceway exceeds 100 ft, what precautions must be taken? - ✔✔Allow ¼" gap between sections What hazard is present in a Class 1 location? - ✔✔Flammable gasses What purpose does a fish tape serve? - ✔✔It is used to pull wires in conduit How many threads per in are there on a 10-24 machine screw? - ✔✔ 24 Interlocks are always wired in what manner? - ✔✔series Why would you wear a grounding wrist strap? - ✔✔To prevent damage to sensitive solid state circuits Which of the following devices are included in a traction elevator safety circuit? - ✔✔Final terminal stopping limits and pit stop switch What is the difference between multi-cord and hoistway wiring cable? - ✔✔Hoistway wiring cable has no outer jacket What is another name for large ring terminal connectors? - ✔✔Lugs After large wires have been joined, how should the connections be finished? - ✔✔Use rubber tape for insulation and electrical tape for abrasion resistance What is the least number of motor leads that can be found on a 3 phase AC motor? - ✔✔Three With standard 3 phase AC motor lead marking, what is the marking on the other end of the winding that begins at T1? - ✔✔T What is the common error when using wire nuts? - ✔✔Stripping too much wire
Where position indicators are used on several floors, they are all connected how? - ✔✔In parallel What is meant by isolation? - ✔✔Mounting the car on rubber blocks Where is safety switches located? - ✔✔Under car or on the car top what is the minimum number of lamps required in the car light fixture? - ✔✔Two what is your best source of information for fixture specifications? - ✔✔Job abstract of the final layout What are the two most common functions of load weighing? - ✔✔To control the generator field and initiate express operation What does ASME code require on the car top in addition to inspector control station? - ✔✔A light and duplex outlet How should AC incandescent lamp sockets be connected? - ✔✔Connect the hot lead to the center terminal and ground conductor to the shell What type of conduit should you use to pipe an isolated car? - ✔✔Flex In order to work safely when wiring the car, which of the following should you always do? - ✔✔Lock out and tag out the main disconnect At what distance from closed must the gate switch operate? - ✔✔2in WHAT is the car top device called which slows elevator if normal slowdowns fail? - ✔✔Terminal speed limiting device
Why are new traveling cables allowed to hang free for a time? - ✔✔To relieve torsional stress How must traveling cable be unreeled into the hoistway? - ✔✔Place the reel so the cable unreels from the bottom 75 - ✔✔Person can be electrocuted by .01 amperes 76 - ✔✔Final limits are set up to operate 4-8 inches beyond the floor 77 - ✔✔When the pit is 5'6" deep second stop switch 78 - ✔✔Group of insulated conductors enclosed in protective jacket is a MULTICORD 79 - ✔✔Non insulated conductor's are hoist way wiring cable What factor is reduced by the addition of a deflector sheave? - ✔✔Arc-length of contact If a hydraulic pump makes a hammering noise, what is the most likely cause? - ✔✔It is rotating in the wrong direction If a car is to be used as a running platform without the cab, how many counterweights should be installed? - ✔✔Slightly more than needed to balance car Why is loss of hoist rope traction hazardous? - ✔✔Control of the elevator is lost Once SCR is gated how long does it continue to conduct? - ✔✔Until the AC sine wave passes through zero What is the approximate density of cast iron? - ✔✔¼ per cubic inch
What is the function of the compensating sheave switch? - ✔✔It opens if the sheave moves up or down beyond limitsIt opens if the sheave moves up or down beyond limits Which rope should be in place before the car sling is hoisted for roping? - ✔✔Governor rope What switches and/or pushbuttons are required in a temporary operating station? - ✔✔Up,down,run and stop How do you verify that the main electrical supply voltage is correct? - ✔✔Check at the controller terminals What type of fuse is designed to be used in reactive circuits where the inrush current is much higher than the steady state current? - ✔✔Time delay At what speed should the gov switch contact be set to open? - ✔✔90 to 95 percent of gov tripping speed How should you seat generator brushes? - ✔✔With sandpaper in the direction of rotation What is the purpose of the suicide circuit? - ✔✔Prevents generator voltage buildup If the DC output of a three phase rectifier is lower that specified, what would the most likely cause? - ✔✔One input phase is missing At what point is the main motor field voltage highest? - ✔✔When the elevator is running When might you place jumpers on the overloads? - ✔✔Never jump out the overloads If the generator is rotating and you apply voltage to the field but no armature voltage is produced, what is most likely wrong? - ✔✔Generator field is open
You are installing a door frame, which of the following statements applies? - ✔✔Use plumb lines hanging from magnets to plumb the side frames After installing entrances frames are prior to the blocks being installed, what is the next step in the procedure? - ✔✔Place a spreader board with cloth or paper on the ends halfway up the frame between side jams
