Thhn - Study guides, Class notes & Summaries

Journeyman Electrician Practice Test | Questions with 100% Correct Answers | Latest Update 2024 | Verified Conductors with _____ marked on the insulation are NOT approved for use in a wet location. - THHN conductors with THHN insulation are approved for use in dry and damp locations only and conductors with THWN, THHW, and THW insulation are recognized for use in dry and wet locations. Given: A one-family dwelling unit with a demand load of 200 amperes is supplied with a 120/240 volt, sin...

Journeyman Practice Test Questions and Answers Conductors with _____ marked on the insulation are NOT approved for use in a wet location. -Answer-THHN conductors with THHN insulation are approved for use in dry and damp locations only and conductors with THWN, THHW, and THW insulation are recognized for use in dry and wet locations. Given: A one-family dwelling unit with a demand load of 200 amperes is supplied with a 120/240 volt, single-phase, electrical system from the local utility co...

What is the result if the neutral wire becomes open on a multiwire circuit having unequal loads? a. The load of higher resistance would overheat and probably be damaged. b. The load of lesser resistance would overheat and probably be damaged. c. No effect until one load is turned off or opens. d. No effect. a. The load of higher resistance would overheat and probably be damaged. Circuits 7 and 9 share a neutral. This is a multiwire branch circuit. If Ckt. 7 is drawing 13 amps and ...

Where located above floor (within 2.1m or 7ft.) cables shall be securely fastened at intervals of?Answer - not more than 18 inches Which cable types can be installed in fireproof riser shafts?Answer - FPLP, FPLR, and FPL How many THHN conductors can fit in a 3/4 size Rigid PVC conduit?Answer - 17 This is the defined as the height from the continuous floor of a room to the continuous ceiling of a room or space?Answer - Ceiling height The visible annunciation of the location of ope...

Journeyman Electrician Practice Test Latest Update Graded A+ Conductors with _____ marked on the insulation are NOT approved for use in a wet location. THHN conductors with THHN insulation are approved for use in dry and damp locations only and conductors with THWN, THHW, and THW insulation are recognized for use in dry and wet locations. Given: A one-family dwelling unit with a demand load of 200 amperes is supplied with a 120/240 volt, single-phase, electrical system from the local utility ...

When testing a water level supervisory switch serving a pressure tank a signal shall indicate if the water level _____________from the required level (NFPA 72, Table 14.4.3.2 17 (j) (4) - rises or falls over 3 inches If combination audible/visible appliances are installed the location of the installed appliance shall be determined by the requirements of _______. (Nfpa 72 18.4.8.1) - the visible appliance What is the maximum number of 12 gauge THHN wires that can be installed in 1" EMT? (...

Journeyman Electrician Practice Test | Questions and Correct Answers | Latest Update 2024/2025 Conductors with _____ marked on the insulation are NOT approved for use in a wet location. - Answer -THHN conductors with THHN insulation are approved for use in dry and damp locations only and conductors with THWN, THHW, and THW insulation are recognized for use in dry and wet locations. Given: A one-family dwelling unit with a demand load of 200 amperes is supplied with a 120/240 volt, sing...

. 23.5 V = mV ANS 23,500 2. 512 cubic inches = cubic feet ANS .2963 3. A 20-ampere, 125-volt single receptacle installed in a dwelling garage for a freezer would require GFCI protection. ANS True 4. A 240-volt branch circuit supplies a resistive heating load of 10 amps. The distance from the panel to the heater is 200'. Using 12 AWG THHN copper, what is the voltage drop on the wire? Use K = 12. ANS 7.35 (Vd = 2KIL ÷ cma = (2)(12)(10)(200) ÷ 6530 = 7.35 volts) 5. A GFCI receptacle or c...

There are six conductors in a raceway connected to 75° rated breakers. Each wire has a 70-amp load using THHN conductors. The minimum size conductor used are #__________ AWG. a. 4 b. 6 c. 8 d. 10 - ANSWERa Thermal insulation shall not be installed within __________ inch(es) of recessed fixtures. a. 1⁄2 b. 3⁄4 c. 2 d. 3 - ANSWERd A 1-inch conduit contains three 3-wire circuits. All conductors are #10 TW. Each circuit consist of two phase conductors, one grounded conductor, an...

Thermal insulation shall not be installed within ______ inch(es) of recessed fixtures correct answers3 An AC system of 50 to 1000 volts shall be grounded if maximum voltage to ground does not exceed ____ volts. correct answers150 The underwater light fixture shall be at least ____ inches below water level. correct answers18 A junction box for the 120 volt wet-niche fixture shall be at least ____ inches above the ground correct answers4 A GFCI protected ____ receptacle for the pump mo...