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A final exam for electrical engineering, focusing on load calculations and electrical code compliance. It includes questions related to determining service and feeder sizes, understanding circuit requirements, and applying demand factors for various appliances. The exam covers essential concepts for electrical installations in residential dwelling units, providing a practical assessment of knowledge in electrical engineering principles. It is useful for students to test their knowledge and understanding of electrical engineering concepts. (404 characters)
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Load||\||\ calculations ||\||\ must||\||\ be||\||\ performed||\||\ in||\||\ order||\||\ to||\||\ determine||\||\ the||\||\ _____________||\||\ - ||\||\ correct||\||\ ||\||\ answer✔✔size||\||\ of||\||\ the||\||\ service ||\||\ and ||\||\ feeders A||\||\ feeder||\||\ is||\||\ defined||\||\ as||\||\ all||\||\ the||\||\ circuit ||\||\ conductors ||\||\ between ||\||\ the||\||\ __________||\||\ containing ||\||\ fuses||\||\ or||\||\ breakers||\||\ that||\||\ feed||\||\ branch||\||\ circuits ||\||\ - ||\||\ correct||\||\ ||\||\ answer✔✔service ||\||\ disconnecting ||\||\ means ||\||\ and ||\||\ the||\||\ panelboard _______________||\||\ are||\||\ included ||\||\ in||\||\ the||\||\ calculated ||\||\ floor ||\||\ area||\||\ of||\||\ dwelling ||\||\ units||\||\ - ||\||\ correct||\||\ ||\||\ answer✔✔Open||\||\ porches A||\||\ scale||\||\ ruler||\||\ is||\||\ used||\||\ in||\||\ - ||\||\ correct||\||\ ||\||\ answer✔✔determining ||\||\ the||\||\ location ||\||\ of||\||\ outlets The||\||\ ___________||\||\ is||\||\ NOT||\||\ an||\||\ important ||\||\ piece||\||\ of||\||\ information ||\||\ to||\||\ gather||\||\ before||\||\ performing||\||\ load||\||\ calculations ||\||\ - ||\||\ correct||\||\ ||\||\ answer✔✔location ||\||\ of||\||\ circuit ||\||\ breakers The||\||\ __________,||\||\ including ||\||\ the||\||\ strip||\||\ heat||\||\ and ||\||\ blower||\||\ motor, ||\||\ is||\||\ necessary ||\||\ information ||\||\ for||\||\ calculating ||\||\ loads ||\||\ - ||\||\ correct||\||\ ||\||\ answer✔✔total||\||\ volt-ampere ||\||\ load The||\||\ lighting ||\||\ load||\||\ for||\||\ residential ||\||\ dwelling ||\||\ units||\||\ is||\||\ _____________||\||\ volt-amperes ||\||\ (VA)||\||\ per||\||\ square ||\||\ foot||\||\ - ||\||\ correct||\||\ ||\||\ answer✔✔ 3 The||\||\ ____________||\||\ for||\||\ each||\||\ floor ||\||\ of||\||\ a||\||\ one-family ||\||\ dwelling ||\||\ shall ||\||\ be||\||\ computed ||\||\ using||\||\ the||\||\ outside ||\||\ dimensions ||\||\ - ||\||\ correct||\||\ ||\||\ answer✔✔floor ||\||\ area
_______________||\||\ must||\||\ be||\||\ included ||\||\ when||\||\ calculating ||\||\ a||\||\ dwelling ||\||\ unit||\||\ service ||\||\ - ||\||\ correct||\||\ ||\||\ answer✔✔Small-appliance ||\||\ branch||\||\ circuits A||\||\ dwelling ||\||\ unit||\||\ must||\||\ have||\||\ at||\||\ least ||\||\ ______________||\||\ small-appliance ||\||\ branch||\||\ circuit(s). ||\||\ - ||\||\ correct||\||\ ||\||\ answer✔✔ 2 Each ||\||\ laundry ||\||\ branch||\||\ circuit ||\||\ is||\||\ calculated ||\||\ at||\||\ _______________||\||\ - ||\||\ correct||\||\ ||\||\ answer✔✔no||\||\ less||\||\ than||\||\ 1500 ||\||\ volt-amperes Individual ||\||\ household ||\||\ cooking ||\||\ appliances ||\||\ rated||\||\ more||\||\ than||\||\ ___________||\||\ watts ||\||\ (volt-amperes) ||\||\ can||\||\ be||\||\ derated ||\||\ by||\||\ using||\||\ Table ||\||\ 220.55||\||\ demand||\||\ factors||\||\ (||\||\ and ||\||\ all||\||\ of||\||\ the||\||\ appliance ||\||\ notes). ||\||\ - ||\||\ correct||\||\ ||\||\ answer✔✔ 1750 No||\||\ derating ||\||\ is||\||\ allowed ||\||\ when||\||\ there||\||\ are||\||\ only ||\||\ one,||\||\ two, ||\||\ or||\||\ three||\||\ ____________||\||\ appliances. ||\||\ - ||\||\ correct||\||\ ||\||\ answer✔✔fastened-in ||\||\ place The||\||\ term||\||\ _______________||\||\ designates ||\||\ utilization ||\||\ equipment ||\||\ commonly ||\||\ built ||\||\ in||\||\ standardized ||\||\ types||\||\ and ||\||\ sizes||\||\ and ||\||\ installed ||\||\ as||\||\ a||\||\ unit||\||\ the||\||\ perform||\||\ specific ||\||\ function(s). ||\||\ - ||\||\ correct||\||\ ||\||\ answer✔✔appliance Multiplying ||\||\ voltage ||\||\ by||\||\ amperage ||\||\ produces ||\||\ ____________.||\||\ - ||\||\ correct||\||\ ||\||\ answer✔✔volt-amperes ||\||\ (VA) A||\||\ clothes||\||\ dryer||\||\ neutral||\||\ load||\||\ on||\||\ a||\||\ feeder||\||\ can||\||\ be||\||\ calculated ||\||\ at||\||\ ___________%.||\||\ - ||\||\ correct||\||\ ||\||\ answer✔✔ 70 Horsepower ||\||\ ratings ||\||\ must||\||\ be||\||\ converted||\||\ to||\||\ ______________||\||\ before||\||\ they||\||\ can||\||\ be||\||\ added ||\||\ to||\||\ the||\||\ load||\||\ calculation ||\||\ form.||\||\ - ||\||\ correct||\||\ ||\||\ answer✔✔volt-amperes ||\||\ (VA) The||\||\ smaller ||\||\ of||\||\ two||\||\ (or||\||\ more)||\||\ ____________||\||\ loads ||\||\ can||\||\ be||\||\ omitted, ||\||\ as||\||\ long||\||\ as||\||\ they||\||\ are||\||\ never||\||\ energized ||\||\ simultaneously. ||\||\ - ||\||\ correct||\||\ ||\||\ answer✔✔noncoincedent
The||\||\ radius ||\||\ of||\||\ the||\||\ curve||\||\ of||\||\ the||\||\ inner||\||\ edge||\||\ of||\||\ any||\||\ bend||\||\ in||\||\ service-entrance ||\||\ cable ||\||\ must||\||\ be||\||\ at||\||\ least ||\||\ ___________||\||\ times||\||\ the||\||\ diameter||\||\ of||\||\ the||\||\ cable. ||\||\ - ||\||\ correct||\||\ ||\||\ answer✔✔ 5 Type||\||\ _________||\||\ cable ||\||\ can||\||\ be||\||\ formed||\||\ in||\||\ a||\||\ gooseneck ||\||\ and ||\||\ taped ||\||\ with||\||\ a||\||\ self- sealing ||\||\ weather-resistant ||\||\ thermoplastic. ||\||\ - ||\||\ correct||\||\ ||\||\ answer✔✔SE Entrance||\||\ cables ||\||\ must||\||\ be||\||\ supported||\||\ within ||\||\ ____________||\||\ of||\||\ every||\||\ raceway ||\||\ or||\||\ enclosure||\||\ connection. ||\||\ - ||\||\ correct||\||\ ||\||\ answer✔✔12in.||\||\ (300||\||\ mm) Although||\||\ not||\||\ stipulated ||\||\ in||\||\ the||\||\ NEC,||\||\ some||\||\ local||\||\ jurisdictions ||\||\ have||\||\ adopted ||\||\ _____________||\||\ for||\||\ service ||\||\ conductors. ||\||\ - ||\||\ correct||\||\ ||\||\ answer✔✔specific ||\||\ distance ||\||\ requirements Underground ||\||\ service ||\||\ conductors ||\||\ are||\||\ defined||\||\ as||\||\ the||\||\ underground ||\||\ conductors ||\||\ between ||\||\ the||\||\ service ||\||\ point||\||\ and ||\||\ the||\||\ ____________||\||\ to||\||\ the||\||\ service-entrance ||\||\ conductors ||\||\ in||\||\ a||\||\ terminal ||\||\ box,||\||\ meter,||\||\ or||\||\ other||\||\ enclosure, ||\||\ inside ||\||\ or||\||\ outside ||\||\ the||\||\ building ||\||\ wall. ||\||\ - ||\||\ correct||\||\ ||\||\ answer✔✔first||\||\ point||\||\ of||\||\ connection Type||\||\ USE ||\||\ cable ||\||\ used||\||\ for||\||\ service ||\||\ laterals ||\||\ can||\||\ ___________||\||\ provided ||\||\ 300.5(D)||\||\ protection ||\||\ requirements ||\||\ are||\||\ met.||\||\ - ||\||\ correct||\||\ ||\||\ answer✔✔emerge ||\||\ aboveground ||\||\ at ||\||\ outside ||\||\ terminations Overhead||\||\ service ||\||\ conductors, ||\||\ accessible ||\||\ on||\||\ to||\||\ pedestrian ||\||\ traffic,||\||\ must||\||\ have||\||\ a||\||\ minimum ||\||\ ___________||\||\ vertical ||\||\ clearance ||\||\ above||\||\ finished ||\||\ grade,||\||\ sidewalks, ||\||\ platforms, ||\||\ or||\||\ projections ||\||\ that||\||\ will||\||\ permit||\||\ personal ||\||\ contact.||\||\ - ||\||\ correct||\||\ ||\||\ answer✔✔10-ft||\||\ (3.0-m) Conductors ||\||\ must||\||\ have||\||\ a||\||\ vertical ||\||\ clearance ||\||\ of||\||\ at||\||\ least ||\||\ _________||\||\ above||\||\ the||\||\ roof ||\||\ surface.||\||\ - ||\||\ correct||\||\ ||\||\ answer✔✔8ft||\||\ (2.4||\||\ m)
Voltage||\||\ between ||\||\ overhead||\||\ conductors ||\||\ does||\||\ not||\||\ exceed||\||\ __________||\||\ volts. ||\||\ - ||\||\ correct||\||\ ||\||\ answer✔✔ 300 Working ||\||\ space||\||\ illumination ||\||\ shall ||\||\ not||\||\ be||\||\ _____________.||\||\ - ||\||\ correct||\||\ ||\||\ answer✔✔controlled ||\||\ by||\||\ automatic ||\||\ means Wireways||\||\ are||\||\ _____________||\||\ with||\||\ hinged||\||\ or||\||\ removeable ||\||\ covers||\||\ used||\||\ to||\||\ house ||\||\ and ||\||\ protect||\||\ electric||\||\ wires||\||\ and ||\||\ cables. ||\||\ - ||\||\ correct||\||\ ||\||\ answer✔✔troughs Concrete, ||\||\ brick ||\||\ or||\||\ tile||\||\ walls ||\||\ are||\||\ recognized ||\||\ as||\||\ _____________.||\||\ - ||\||\ correct||\||\ ||\||\ answer✔✔grounded All ||\||\ switchboards, ||\||\ switchgear, ||\||\ panelboards, ||\||\ distribution ||\||\ boards,||\||\ and ||\||\ motor||\||\ control ||\||\ centers||\||\ must||\||\ be||\||\ located ||\||\ _____________||\||\ and ||\||\ must||\||\ be||\||\ protected||\||\ from||\||\ damage. ||\||\ - ||\||\ correct||\||\ ||\||\ answer✔✔in||\||\ dedicated ||\||\ crawlspaces Panelboards ||\||\ shall ||\||\ be||\||\ mounted ||\||\ in||\||\ cabinets, ||\||\ cutout||\||\ boxes,||\||\ or||\||\ identified ||\||\ enclosures||\||\ and ||\||\ shall ||\||\ be||\||\ _____________.||\||\ - ||\||\ correct||\||\ ||\||\ answer✔✔dead||\||\ front Panelboards ||\||\ included ||\||\ overcurrent ||\||\ devices||\||\ as||\||\ well||\||\ as||\||\ _____________||\||\ - ||\||\ correct||\||\ ||\||\ answer✔✔buses The||\||\ voltage ||\||\ rating||\||\ of||\||\ circuit ||\||\ breakers||\||\ must||\||\ be||\||\ clearly ||\||\ marked||\||\ and ||\||\ _______________.||\||\ - ||\||\ correct||\||\ ||\||\ answer✔✔no||\||\ less||\||\ than||\||\ the||\||\ nominal ||\||\ system ||\||\ voltage The||\||\ ampere||\||\ rating||\||\ of||\||\ any||\||\ circuit ||\||\ breaker||\||\ at||\||\ __________||\||\ amperes||\||\ or||\||\ less, ||\||\ and ||\||\ 1000 ||\||\ volts ||\||\ or||\||\ less, ||\||\ must||\||\ be||\||\ molded, ||\||\ stamped, ||\||\ etched,||\||\ or||\||\ similarly ||\||\ marked||\||\ into ||\||\ the||\||\ handle ||\||\ or||\||\ escutcheon ||\||\ area.||\||\ - ||\||\ correct||\||\ ||\||\ answer✔✔ 100 Circuit ||\||\ breakers||\||\ and ||\||\ fuses||\||\ can||\||\ be||\||\ connected ||\||\ in||\||\ parallel ||\||\ provided ||\||\ they||\||\ are||\||\ ____________||\||\ - ||\||\ correct||\||\ ||\||\ answer✔✔factor||\||\ assembled ||\||\ and ||\||\ listed ||\||\ as||\||\ a||\||\ unit
Branch ||\||\ circuits ||\||\ recognized ||\||\ by||\||\ Article||\||\ 210 ||\||\ shall ||\||\ be||\||\ rated||\||\ in||\||\ accordance ||\||\ with||\||\ the ||\||\ maximum||\||\ permitted||\||\ ampere||\||\ rating||\||\ or||\||\ setting ||\||\ of||\||\ the||\||\ ______________.||\||\ - ||\||\ correct||\||\ ||\||\ answer✔✔overcurrent ||\||\ device Where||\||\ a||\||\ branch||\||\ circuit ||\||\ supplies ||\||\ continuous ||\||\ loads ||\||\ or||\||\ any||\||\ combination ||\||\ of||\||\ continuous ||\||\ or||\||\ noncontinuous ||\||\ loads, ||\||\ the||\||\ maximum||\||\ branch-circuit ||\||\ conductors ||\||\ size||\||\ shall ||\||\ have||\||\ an||\||\ allowable ||\||\ ampacity ||\||\ not||\||\ less||\||\ than||\||\ the||\||\ noncontinuous ||\||\ load||\||\ plus||\||\ ______________%||\||\ of||\||\ the||\||\ continuous ||\||\ load.||\||\ - ||\||\ correct||\||\ ||\||\ answer✔✔ 125 The||\||\ disconnecting ||\||\ means ||\||\ for||\||\ a||\||\ sign||\||\ in||\||\ a||\||\ commercial ||\||\ or||\||\ industrial ||\||\ building ||\||\ must||\||\ be||\||\ _______________||\||\ or||\||\ outline ||\||\ lighting ||\||\ system ||\||\ that||\||\ it||\||\ controls. ||\||\ - ||\||\ correct||\||\ ||\||\ answer✔✔within ||\||\ sight||\||\ of||\||\ the||\||\ sign Sign||\||\ and ||\||\ outline ||\||\ lighting ||\||\ outlets ||\||\ must||\||\ be||\||\ calculated ||\||\ at||\||\ a||\||\ minimum ||\||\ of||\||\ ____________||\||\ per||\||\ required ||\||\ branch||\||\ circuit. ||\||\ - ||\||\ correct||\||\ ||\||\ answer✔✔ 1200 ||\||\ volt- amperes The||\||\ minimum ||\||\ number ||\||\ of||\||\ branch||\||\ circuits ||\||\ is||\||\ determined ||\||\ from||\||\ ______________||\||\ load||\||\ and ||\||\ the||\||\ size||\||\ (or||\||\ rating) ||\||\ of||\||\ the||\||\ circuits ||\||\ used.||\||\ - ||\||\ correct||\||\ ||\||\ answer✔✔the||\||\ total||\||\ computed The||\||\ 6-foot ||\||\ rule||\||\ applies ||\||\ to||\||\ _________________.||\||\ - ||\||\ correct||\||\ ||\||\ answer✔✔dwelling ||\||\ units||\||\ only Individual ||\||\ moveable ||\||\ showcases ||\||\ can||\||\ be||\||\ connected ||\||\ by||\||\ _____________.||\||\ - ||\||\ correct||\||\ ||\||\ answer✔✔flexible||\||\ cord ||\||\ to||\||\ permanently ||\||\ installed ||\||\ receptacles In||\||\ cord-connected ||\||\ showcases, ||\||\ the||\||\ secondary ||\||\ circuit(s) ||\||\ of||\||\ each||\||\ electric- discharge ||\||\ lighting ||\||\ ballast ||\||\ is||\||\ (are)||\||\ _____________.||\||\ - ||\||\ correct||\||\ ||\||\ answer✔✔limited ||\||\ to||\||\ one||\||\ showcase
Receptacles, ||\||\ connectors, ||\||\ and ||\||\ attachments ||\||\ plugs ||\||\ for||\||\ showcases ||\||\ must||\||\ be||\||\ of||\||\ a||\||\ listed ||\||\ grounding ||\||\ type,||\||\ rated||\||\ __________.||\||\ - ||\||\ correct||\||\ ||\||\ answer✔✔ 15 ||\||\ or||\||\ 20 ||\||\ amperes For||\||\ circuits ||\||\ supplying ||\||\ loads ||\||\ consisting ||\||\ of||\||\ motor-operated ||\||\ utilization ||\||\ equipment ||\||\ (||\||\ fastened||\||\ in||\||\ place ||\||\ with||\||\ a||\||\ motor||\||\ larger ||\||\ than||\||\ 1.8||\||\ hp)||\||\ in||\||\ combination ||\||\ with||\||\ other||\||\ loads, ||\||\ the||\||\ total||\||\ combined ||\||\ load||\||\ must||\||\ be||\||\ calculated ||\||\ based||\||\ on||\||\ _____________%||\||\ of||\||\ the||\||\ largest||\||\ motor||\||\ load||\||\ plus||\||\ the||\||\ sum||\||\ of||\||\ the||\||\ other||\||\ loads. ||\||\ - ||\||\ correct||\||\ ||\||\ answer✔✔ 125 ________________||\||\ receptacles ||\||\ are||\||\ permitted||\||\ on||\||\ a||\||\ 15-ampere||\||\ overcurrent ||\||\ protective ||\||\ device. ||\||\ - ||\||\ correct||\||\ ||\||\ answer✔✔Ten Receptacles ||\||\ on||\||\ a||\||\ branch||\||\ circuit ||\||\ are||\||\ calculated ||\||\ at||\||\ __________||\||\ per||\||\ strap. ||\||\ - ||\||\ correct ||\||\ ||\||\ answer✔✔ 180 ||\||\ volt-amperes A||\||\ continuous ||\||\ load||\||\ is||\||\ defined||\||\ as||\||\ a||\||\ load||\||\ ____________.||\||\ - ||\||\ correct||\||\ ||\||\ answer✔✔having ||\||\ the||\||\ maximum||\||\ level ||\||\ of||\||\ current||\||\ sustained ||\||\ for||\||\ three||\||\ hours ||\||\ or||\||\ more. In||\||\ hotel||\||\ and ||\||\ motel||\||\ guest||\||\ rooms||\||\ and ||\||\ suites, ||\||\ _____________||\||\ do||\||\ not||\||\ require||\||\ a||\||\ receptacle. ||\||\ - ||\||\ correct||\||\ ||\||\ answer✔✔hallways Where||\||\ appliances ||\||\ are||\||\ unlikely||\||\ to||\||\ be||\||\ used||\||\ simultaneously, ||\||\ each||\||\ ____________||\||\ or ||\||\ fraction ||\||\ thereof||\||\ (of||\||\ separate ||\||\ and ||\||\ continuous ||\||\ length) ||\||\ shall ||\||\ be||\||\ considered ||\||\ one||\||\ outlet||\||\ of||\||\ not||\||\ less||\||\ than||\||\ 180 ||\||\ volt-amperes. ||\||\ - ||\||\ correct||\||\ ||\||\ answer✔✔ 5 ||\||\ ft||\||\ (1.5||\||\ m) When||\||\ considering ||\||\ receptacle||\||\ volt-ampere ||\||\ rating,||\||\ a||\||\ single ||\||\ piece||\||\ of||\||\ equipment ||\||\ (||\||\ consisting ||\||\ of||\||\ four||\||\ or||\||\ more||\||\ receptacles) ||\||\ must||\||\ be||\||\ calculated ||\||\ at||\||\ not||\||\ less||\||\ than||\||\ _____________||\||\ volt-amperes ||\||\ per||\||\ receptacle. ||\||\ - ||\||\ correct||\||\ ||\||\ answer✔✔ 90 show-window ||\||\ branch-circuit ||\||\ loads ||\||\ must||\||\ be||\||\ calculated ||\||\ either||\||\ by||\||\ (a)||\||\ unit||\||\ load||\||\ per||\||\ outlet||\||\ as||\||\ required ||\||\ by||\||\ other||\||\ provisions ||\||\ of||\||\ 220.14||\||\ or||\||\ (b)||\||\ at||\||\ _____________||\||\ volt-amperes ||\||\ per||\||\ linear ||\||\ foot. ||\||\ - ||\||\ correct||\||\ ||\||\ answer✔✔ 200
The||\||\ load||\||\ calculation ||\||\ form||\||\ results||\||\ (||\||\ overcurrent ||\||\ protection ||\||\ and ||\||\ conductors) ||\||\ represent||\||\ _____________||\||\ requirement.||\||\ - ||\||\ correct||\||\ ||\||\ answer✔✔only ||\||\ a||\||\ minimum General ||\||\ purpose ||\||\ receptacles ||\||\ are||\||\ _____________.||\||\ - ||\||\ correct||\||\ ||\||\ answer✔✔not||\||\ continuous ||\||\ loads Receptacle ||\||\ outlets ||\||\ are||\||\ calculated ||\||\ at||\||\ a||\||\ minimum ||\||\ of||\||\ _____________||\||\ volt-amperes ||\||\ for||\||\ each||\||\ single ||\||\ (or||\||\ multiple) ||\||\ receptacle||\||\ on||\||\ one||\||\ yoke||\||\ (or||\||\ strap).||\||\ - ||\||\ correct||\||\ ||\||\ answer✔✔ 180 In||\||\ office||\||\ buildings, ||\||\ the||\||\ receptacle||\||\ load||\||\ shall ||\||\ be||\||\ calculated ||\||\ to||\||\ be||\||\ the||\||\ larger ||\||\ of||\||\ (1)||\||\ the||\||\ calculated ||\||\ load||\||\ from||\||\ 220.14(I), ||\||\ or||\||\ (2)||\||\ _______________||\||\ volt-ampere(s) ||\||\ per||\||\ square ||\||\ foot. ||\||\ - ||\||\ correct||\||\ ||\||\ answer✔✔ 1 In||\||\ calculating ||\||\ general||\||\ lighting ||\||\ load,||\||\ each||\||\ floor's ||\||\ area||\||\ shall ||\||\ be||\||\ calculated ||\||\ using||\||\ the||\||\ building's ||\||\ (or||\||\ area's) ||\||\ _____________.||\||\ - ||\||\ correct||\||\ ||\||\ answer✔✔outside ||\||\ dimensions Sign||\||\ and ||\||\ outline ||\||\ lightning ||\||\ outlets ||\||\ in||\||\ commercial ||\||\ buildings ||\||\ are||\||\ computed ||\||\ at||\||\ a||\||\ minimum ||\||\ of||\||\ _______________||\||\ volt-amperes. ||\||\ - ||\||\ correct||\||\ ||\||\ answer✔✔ 1200 A||\||\ load||\||\ where||\||\ the||\||\ maximum||\||\ current||\||\ is||\||\ expected ||\||\ to||\||\ continue ||\||\ for||\||\ _________||\||\ or||\||\ more||\||\ is||\||\ a||\||\ continuous ||\||\ load.||\||\ - ||\||\ correct||\||\ ||\||\ answer✔✔three||\||\ hours Feeder||\||\ conductors ||\||\ and ||\||\ overcurrent ||\||\ protection ||\||\ shall ||\||\ be||\||\ sized ||\||\ at||\||\ 100%||\||\ of||\||\ noncontinuous ||\||\ loads ||\||\ plus||\||\ ___________%||\||\ of||\||\ continuous ||\||\ loads. ||\||\ - ||\||\ correct||\||\ ||\||\ answer✔✔125To
To||\||\ calculate ||\||\ multiple ||\||\ noncontinuous ||\||\ loads ||\||\ used||\||\ simultaneously, ||\||\ the||\||\ _____________||\||\ load(s)||\||\ that||\||\ will||\||\ be||\||\ used||\||\ at||\||\ one||\||\ time||\||\ is||\||\ (are)||\||\ used||\||\ in||\||\ calculating ||\||\ the||\||\ total||\||\ foot||\||\ feeder/service. ||\||\ - ||\||\ correct||\||\ ||\||\ answer✔✔largest The||\||\ demand||\||\ factor||\||\ for||\||\ three||\||\ pieces||\||\ of||\||\ equipment ||\||\ is||\||\ 90%,||\||\ for||\||\ four||\||\ pieces, ||\||\ ____________%,||\||\ for||\||\ five||\||\ pieces, ||\||\ 70%,||\||\ and ||\||\ for||\||\ more||\||\ than||\||\ five||\||\ pieces, ||\||\ 65%.||\||\ - ||\||\ correct||\||\ ||\||\ answer✔✔ 80 In||\||\ determining ||\||\ the||\||\ load||\||\ of||\||\ the||\||\ highest-rated ||\||\ motor, ||\||\ the||\||\ greater||\||\ of||\||\ either||\||\ ampere||\||\ rating||\||\ from||\||\ 430.22(E) ||\||\ or||\||\ the||\||\ largest||\||\ continuous-duty ||\||\ motor||\||\ full-load ||\||\ current||\||\ multiplied ||\||\ by||\||\ ____________||\||\ shall ||\||\ be||\||\ used||\||\ in||\||\ the||\||\ summation. ||\||\ - ||\||\ correct||\||\ ||\||\ answer✔✔1. Conductors ||\||\ ____________||\||\ AWG||\||\ and ||\||\ larger ||\||\ can||\||\ be||\||\ connected ||\||\ in||\||\ parallel ||\||\ (electrically ||\||\ joined||\||\ at||\||\ both||\||\ ends||\||\ to||\||\ form||\||\ a||\||\ single ||\||\ conductor). ||\||\ - ||\||\ correct||\||\ ||\||\ answer✔✔1/ Three-phase ||\||\ voltage ||\||\ is||\||\ found ||\||\ by||\||\ multiplying ||\||\ the||\||\ voltage ||\||\ (single-phase) ||\||\ by||\||\ _________.||\||\ - ||\||\ correct||\||\ ||\||\ answer✔✔1. Fractions ||\||\ of||\||\ an||\||\ ampere||\||\ 0.5||\||\ and ||\||\ higher ||\||\ are||\||\ _______________,||\||\ while||\||\ fractions ||\||\ less||\||\ than||\||\ 0.5||\||\ are||\||\ dropped. ||\||\ - ||\||\ correct||\||\ ||\||\ answer✔✔rounded ||\||\ up The||\||\ feeder||\||\ (or||\||\ service)||\||\ neutral||\||\ load||\||\ is||\||\ the||\||\ _______________||\||\ of||\||\ the||\||\ load||\||\ determined ||\||\ by||\||\ Article||\||\ 220.||\||\ - ||\||\ correct||\||\ ||\||\ answer✔✔maximum||\||\ unbalance Where||\||\ the||\||\ grounding ||\||\ electrode||\||\ conductor ||\||\ or||\||\ bonding ||\||\ jumper||\||\ connects ||\||\ to||\||\ a||\||\ single ||\||\ or||\||\ multiple ||\||\ rod,||\||\ pipe,||\||\ or||\||\ plate||\||\ electrode(s) ||\||\ or||\||\ any||\||\ combination ||\||\ thereof, ||\||\ or||\||\ does||\||\ not||\||\ extend ||\||\ on||\||\ to||\||\ other||\||\ types||\||\ of||\||\ electrodes||\||\ that||\||\ require||\||\ a||\||\ larger ||\||\ size||\||\ conductor, ||\||\ the||\||\ grounding ||\||\ electrode||\||\ conductor ||\||\ shall ||\||\ not||\||\ be||\||\ required ||\||\ larger ||\||\ than||\||\ ______________.||\||\ - ||\||\ correct||\||\ ||\||\ answer✔✔ 6 ||\||\ AWG||\||\ copper ||\||\ wire||\||\ or||\||\ 4 ||\||\ AWG||\||\ aluminum
According ||\||\ to||\||\ the||\||\ NEC,||\||\ live||\||\ parts||\||\ of||\||\ electrical ||\||\ equipment ||\||\ operating ||\||\ at||\||\ 50 ||\||\ to||\||\ 1000 ||\||\ volts, ||\||\ nominal, ||\||\ shall ||\||\ be||\||\ guarded||\||\ against||\||\ _____________||\||\ by||\||\ approved ||\||\ enclosures. ||\||\ - ||\||\ correct||\||\ ||\||\ answer✔✔accidental ||\||\ contact The||\||\ alternating ||\||\ current||\||\ phase||\||\ arrangement ||\||\ on||\||\ 3-phase ||\||\ busses ||\||\ are||\||\ ___________ ||\||\ from||\||\ front||\||\ to||\||\ back, ||\||\ top||\||\ to||\||\ bottom,||\||\ or||\||\ left||\||\ to||\||\ right,||\||\ as||\||\ viewed ||\||\ from||\||\ the||\||\ front||\||\ of||\||\ the||\||\ switchboard, ||\||\ switchgear, ||\||\ or||\||\ panelboard. ||\||\ - ||\||\ correct||\||\ ||\||\ answer✔✔A,B,C The||\||\ ____________||\||\ phase||\||\ must||\||\ be||\||\ that||\||\ phase||\||\ having||\||\ the||\||\ higher ||\||\ voltage ||\||\ to||\||\ ground||\||\ on||\||\ 3-phase, ||\||\ 4-wire, ||\||\ delta-connected ||\||\ systems. ||\||\ - ||\||\ correct||\||\ ||\||\ answer✔✔B A||\||\ ____________||\||\ is||\||\ a||\||\ large||\||\ single ||\||\ panel, ||\||\ frame,||\||\ or||\||\ assembly ||\||\ of||\||\ panels ||\||\ with||\||\ front- to-rear-mounted ||\||\ switches, ||\||\ protective ||\||\ devices||\||\ (overcurrent, ||\||\ etc.),||\||\ buses,||\||\ and ||\||\ usually, ||\||\ instruments. ||\||\ - ||\||\ correct||\||\ ||\||\ answer✔✔switchboard Service ||\||\ equipment ||\||\ in||\||\ other||\||\ than||\||\ dwelling ||\||\ units||\||\ shall ||\||\ be||\||\ legibly||\||\ marked||\||\ in||\||\ the||\||\ field||\||\ with||\||\ the||\||\ ____________.||\||\ - ||\||\ correct||\||\ ||\||\ answer✔✔maximum||\||\ available ||\||\ fault||\||\ current All ||\||\ panelboards ||\||\ shall ||\||\ have||\||\ a||\||\ rating||\||\ not||\||\ less||\||\ than||\||\ the||\||\ _____________||\||\ required ||\||\ for||\||\ the||\||\ load||\||\ calculated ||\||\ in||\||\ accordance ||\||\ with||\||\ Part||\||\ III, ||\||\ IV,||\||\ or||\||\ V||\||\ of||\||\ Article||\||\ 220.||\||\ - ||\||\ correct||\||\ ||\||\ answer✔✔minimum ||\||\ feeder||\||\ capacity According ||\||\ to||\||\ the||\||\ NEC,||\||\ where||\||\ a||\||\ panelboard ||\||\ is||\||\ supplied ||\||\ through||\||\ a||\||\ transformer, ||\||\ the||\||\ overcurrent ||\||\ protection ||\||\ required ||\||\ by||\||\ 408.36||\||\ shall ||\||\ be||\||\ located ||\||\ on||\||\ the||\||\ ___________||\||\ side ||\||\ of||\||\ the||\||\ transformer. ||\||\ - ||\||\ correct||\||\ ||\||\ answer✔✔secondary The||\||\ connection ||\||\ between ||\||\ the||\||\ grounded ||\||\ circuit ||\||\ conductor ||\||\ (neutral) ||\||\ and ||\||\ the||\||\ equipment ||\||\ grounding ||\||\ conductor ||\||\ at||\||\ the||\||\ service ||\||\ is||\||\ the||\||\ __________.||\||\ - ||\||\ correct||\||\ ||\||\ answer✔✔main ||\||\ bonding ||\||\ jumper
Where||\||\ the||\||\ ungrounded ||\||\ supply ||\||\ conductors ||\||\ are||\||\ larger ||\||\ than||\||\ 1100 ||\||\ kcmil||\||\ copper ||\||\ or||\||\ 1750 ||\||\ kcmil||\||\ aluminum, ||\||\ the||\||\ supply-side ||\||\ bonding ||\||\ jumper||\||\ shall ||\||\ have||\||\ an||\||\ area||\||\ not||\||\ less||\||\ than||\||\ ___________||\||\ of||\||\ the||\||\ area||\||\ of||\||\ the||\||\ largest||\||\ ungrounded ||\||\ supply ||\||\ conductor ||\||\ or||\||\ equivalent ||\||\ area||\||\ for||\||\ parallel ||\||\ supply ||\||\ conductors. ||\||\ - ||\||\ correct||\||\ ||\||\ answer✔✔ 12 ||\||\ 1/2% Where||\||\ ungrounded ||\||\ conductors ||\||\ are||\||\ increased ||\||\ in||\||\ size||\||\ for||\||\ any||\||\ reason||\||\ other||\||\ than ||\||\ as||\||\ required ||\||\ in||\||\ 310.15(B) ||\||\ or||\||\ 310.15(C), ||\||\ wire-type ||\||\ equipment ||\||\ grounding ||\||\ conductors ||\||\ (where||\||\ installed) ||\||\ shall ||\||\ be||\||\ increased ||\||\ in||\||\ size||\||\ _____________,||\||\ according ||\||\ to||\||\ the||\||\ circular ||\||\ mil||\||\ area||\||\ of||\||\ the||\||\ ungrounded ||\||\ conductors. ||\||\ - ||\||\ correct||\||\ ||\||\ answer✔✔proportionately Ground-fault ||\||\ protection ||\||\ that||\||\ functions ||\||\ to||\||\ open||\||\ the||\||\ service ||\||\ disconnect ||\||\ will||\||\ afford||\||\ no||\||\ protection ||\||\ from||\||\ faults||\||\ on||\||\ the||\||\ __________||\||\ of||\||\ the||\||\ protective ||\||\ element. ||\||\ - ||\||\ correct||\||\ ||\||\ answer✔✔line||\||\ side Overcurrent ||\||\ protection ||\||\ for||\||\ transformers ||\||\ over||\||\ ____________-||\||\ volts, ||\||\ nominal, ||\||\ is||\||\ required. ||\||\ - ||\||\ correct||\||\ ||\||\ answer✔✔ 1000 No||\||\ secondary ||\||\ overcurrent ||\||\ protection ||\||\ is||\||\ required ||\||\ for||\||\ certain||\||\ transformers ||\||\ 1000 ||\||\ volts, ||\||\ nominal, ||\||\ or||\||\ less||\||\ with||\||\ currents ||\||\ of||\||\ at||\||\ least ||\||\ 9 ||\||\ amperes||\||\ and ||\||\ a||\||\ maximum||\||\ primary||\||\ overcurrent ||\||\ protection ||\||\ of||\||\ ______________.||\||\ - ||\||\ correct||\||\ ||\||\ answer✔✔125% The||\||\ maximum||\||\ rating||\||\ for||\||\ overcurrent ||\||\ protection ||\||\ on||\||\ a||\||\ primary||\||\ unit||\||\ is||\||\ ___________.||\||\ - ||\||\ correct||\||\ ||\||\ answer✔✔250% A||\||\ system ||\||\ that||\||\ supplies ||\||\ a||\||\ _____________||\||\ and ||\||\ is||\||\ derived||\||\ from||\||\ a||\||\ transformer ||\||\ rated ||\||\ no||\||\ more||\||\ than||\||\ 1000 ||\||\ volt-amperes ||\||\ does||\||\ not||\||\ require||\||\ a||\||\ grounding ||\||\ electrode||\||\ conductor. ||\||\ - ||\||\ correct||\||\ ||\||\ answer✔✔Class||\||\ 1,2||\||\ or||\||\ 3 ||\||\ circuit Premises ||\||\ wiring ||\||\ (system) ||\||\ is||\||\ defined||\||\ as||\||\ _______________,||\||\ including ||\||\ power,||\||\ lighting, ||\||\ control, ||\||\ and ||\||\ signal ||\||\ circuit ||\||\ wiring ||\||\ together||\||\ with||\||\ all||\||\ their||\||\ associated ||\||\
Group ||\||\ G||\||\ is||\||\ the||\||\ catchall ||\||\ group||\||\ whose||\||\ atmosphere ||\||\ contain ||\||\ combustible ||\||\ dusts ||\||\ not||\||\ included ||\||\ in||\||\ Group ||\||\ E||\||\ or||\||\ F,||\||\ including ||\||\ _____________.||\||\ - ||\||\ correct||\||\ ||\||\ answer✔✔flour, ||\||\ grain,||\||\ wood, ||\||\ plastic, ||\||\ and ||\||\ chemicals The||\||\ simultaneous ||\||\ presence ||\||\ of||\||\ flammable ||\||\ gases,||\||\ flammable ||\||\ liquid-produced ||\||\ vapors, ||\||\ or||\||\ combustible ||\||\ dusts ||\||\ shall ||\||\ be||\||\ considered ||\||\ when||\||\ determining ||\||\ the||\||\ __________||\||\ of||\||\ the||\||\ electrical ||\||\ equipment. ||\||\ - ||\||\ correct||\||\ ||\||\ answer✔✔safe||\||\ operating ||\||\ temperature Unless ||\||\ otherwise ||\||\ specified ||\||\ in||\||\ 500.8(C)(6),||\||\ equipment ||\||\ markings ||\||\ shall ||\||\ include: ||\||\ (1)||\||\ class, ||\||\ (2)||\||\ division, ||\||\ (3)||\||\ material ||\||\ classification ||\||\ group,||\||\ (4)||\||\ equipment ||\||\ temperature, ||\||\ and ||\||\ (5)||\||\ ___________.||\||\ - ||\||\ correct||\||\ ||\||\ answer✔✔ambient ||\||\ temperature ||\||\ range Tensile ||\||\ stress||\||\ at||\||\ Type||\||\ MI||\||\ cable ||\||\ termination ||\||\ fitting ||\||\ can||\||\ be||\||\ avoided ||\||\ by||\||\ ____________.||\||\ - ||\||\ correct||\||\ ||\||\ answer✔✔proper||\||\ installation ||\||\ and ||\||\ support||\||\ methods Type||\||\ PVC||\||\ conduit, ||\||\ Type||\||\ RTRC||\||\ conduit, ||\||\ and ||\||\ Type||\||\ HDPE||\||\ conduit ||\||\ can||\||\ be||\||\ used||\||\ when||\||\ first||\||\ surrounded ||\||\ by||\||\ at||\||\ least ||\||\ ______________||\||\ of||\||\ concrete, ||\||\ followed ||\||\ by||\||\ a||\||\ minimum ||\||\ cover||\||\ of||\||\ 24 ||\||\ in.||\||\ (600||\||\ mm)||\||\ (top||\||\ of||\||\ conduit ||\||\ to||\||\ grade). ||\||\ - ||\||\ correct||\||\ ||\||\ answer✔✔ 2 ||\||\ in.||\||\ (50||\||\ mm) Conduit/cable ||\||\ system ||\||\ seals||\||\ minimize||\||\ the||\||\ passage ||\||\ of||\||\ ___________||\||\ and ||\||\ present||\||\ the||\||\ passage ||\||\ of||\||\ flames ||\||\ from||\||\ one||\||\ portion ||\||\ of||\||\ the||\||\ electrical ||\||\ installation ||\||\ to||\||\ another ||\||\ through||\||\ the||\||\ conduit. ||\||\ - ||\||\ correct||\||\ ||\||\ answer✔✔gas/vapors Sealing ||\||\ compound ||\||\ shall ||\||\ _________.||\||\ - ||\||\ correct||\||\ ||\||\ answer✔✔not||\||\ affected||\||\ by||\||\ surrounding ||\||\ atmosphere ||\||\ or||\||\ liquids Areas||\||\ in||\||\ a||\||\ garage||\||\ adjacent ||\||\ to||\||\ classified ||\||\ locations ||\||\ in||\||\ which||\||\ flammable ||\||\ vapor||\||\ release||\||\ is||\||\ unlikely||\||\ (such ||\||\ as||\||\ a||\||\ storeroom) ||\||\ shall ||\||\ be||\||\ unclassified ||\||\ where||\||\ ___________.||\||\ - ||\||\ correct||\||\ ||\||\ answer✔✔mechanically ||\||\ ventilated ||\||\ at||\||\ a||\||\ rate||\||\ of||\||\ four||\||\ (or||\||\ more)||\||\ air||\||\ changes ||\||\ per||\||\ hour
Additional ||\||\ seals||\||\ apply||\||\ to||\||\ the||\||\ __________||\||\ of||\||\ the||\||\ Class||\||\ I||\||\ locations. ||\||\ - ||\||\ correct||\||\ ||\||\ answer✔✔horizontal ||\||\ as||\||\ well||\||\ as||\||\ vertical ||\||\ boundaries Article||\||\ 515 ||\||\ covers||\||\ a||\||\ property||\||\ or||\||\ portion ||\||\ of||\||\ a||\||\ property||\||\ where||\||\ ____________||\||\ are||\||\ received||\||\ by||\||\ tank||\||\ vessel,||\||\ pipelines, ||\||\ tank||\||\ car,||\||\ or||\||\ tank||\||\ vehicle ||\||\ and ||\||\ are||\||\ stored||\||\ or||\||\ blended ||\||\ in||\||\ bulk||\||\ for||\||\ the||\||\ purpose ||\||\ of||\||\ distribution. ||\||\ - ||\||\ correct||\||\ ||\||\ answer✔✔flammable ||\||\ liquids Electrical ||\||\ wiring ||\||\ and ||\||\ electrical ||\||\ utilization ||\||\ equipment ||\||\ located ||\||\ within ||\||\ 5 ||\||\ ft||\||\ (1525||\||\ mm)||\||\ of||\||\ a||\||\ vapor||\||\ source ||\||\ shall ||\||\ be||\||\ suitable ||\||\ for||\||\ ______________||\||\ locations. ||\||\ - ||\||\ correct||\||\ ||\||\ answer✔✔Class||\||\ I The||\||\ temperature ||\||\ marking ||\||\ for||\||\ organic||\||\ dusts ||\||\ that||\||\ may||\||\ dehydrate ||\||\ or||\||\ carbonize ||\||\ shall ||\||\ not||\||\ exceed||\||\ the||\||\ lower||\||\ of||\||\ either||\||\ the||\||\ ignition ||\||\ temperature ||\||\ or||\||\ _____________.||\||\