PEC CHAPTER 6 SPECIAL EQUIPMENT Flashcards
ELECTRIC SIGNS AND OUTLINE LIGHTINGS
Markings
- shall be marked with the manufacturer’s name, trademark, or other means of identification; and, input voltage and current rating.
Signs and Outline Lighting Systems
ELECTRIC SIGNS AND OUTLINE LIGHTINGS
Markings
- shall be marked to indicate the maximum allowable wattage of lamps. The markings shall be at least 6.00 mm high, and shall be visible during relamping.
With Incandescent Lamp Holders
ELECTRIC SIGNS AND OUTLINE LIGHTINGS
Branch Circuit
Incandescent and Fluorescent Lamps - Shall be rated not to exceed __ amperes.
b) Neon Lamps - Shall be rated not to exceed 30 amperes.
20
ELECTRIC SIGNS AND OUTLINE LIGHTINGS
Branch Circuit.
Neon Lamps - Shall be rated not to exceed __ amperes.
30
ELECTRIC SIGNS AND OUTLINE LIGHTINGS
Disconnects
Within the ___ of the sign or outline lighting system that it controls.
Within sight of the electronic or mechanical controllers located _____ to the sign.
sight
external
ELECTRIC SIGNS AND OUTLINE LIGHTINGS
Groundings
- Signs and metal equipment of outline lighting systems shall be ______.
grounded
ELECTRIC SIGNS AND OUTLINE LIGHTINGS
Groundings
Shall be permitted as a bonding means in lengths not exceeding 30 m
Flexible Metal Conduit
ELECTRIC SIGNS AND OUTLINE LIGHTINGS
Groundings
The parts not exceeding 50 mm in any dimension, not likely to be energized and spaced at least 19 mm from neon tubing shall not require bonding.
Small Metal Parts
ELECTRIC SIGNS AND OUTLINE LIGHTINGS
Groundings
Shall be installed separate and remote, spaced at least 40 mm from the system for 100 Hz or less or 45 mm for systems 100 Hz and over.
Nonmetallic Conduit
ELECTRIC SIGNS AND OUTLINE LIGHTINGS
Groundings
Shall be made of copper and not smaller than 2.0 mm2 (1.6 mm dia.).
Bonding Conductors
ELECTRIC SIGNS AND OUTLINE LIGHTINGS
Groundings
_________- Shall have all metal parts and equipment grounding conductors bonded.
Signs in Fountains
ELECTRIC SIGNS AND OUTLINE LIGHTINGS
Enclosure
The enclosure shall be a sheet_______ at least _____ thick. Using of sheet steel for the enclosure shall be at least _______ thick.
copper or aluminum
- 50 mm
- 40 mm
ELECTRIC SIGNS AND OUTLINE LIGHTINGS
Location
Vehicles - Shall be least _______(mm) above areas with access to vehicles unless protected from damage
4300 mm
ELECTRIC SIGNS AND OUTLINE LIGHTINGS
Location
Pedestrians - Neon tubing installed in pedestrians shall be protected from ________
physical damage
ELECTRIC SIGNS AND OUTLINE LIGHTINGS
Location
Adjacent to Combustible Materials - The materials shall not be subjected to temperatures in excess of ____C. The spacing between wood or other combustible materials shall not be less than _____ohm.
90ºC
50 mm
ELECTRIC SIGNS AND OUTLINE LIGHTINGS
Location
Wet Location - Shall be listed _____ type or ______ and have ______.
• Drain holes shall not be larger than___(mm)
or smaller than ____(mm).
• Every low point or isolated section of the equipment shall have at least _ drain hole.
watertight
weatherproof
drain holes
13 mm
6.0 mm
1
ELECTRIC SIGNS AND OUTLINE LIGHTINGS
_____________Shall be an integral part of the attachment plug or shall be located in the power-supply cord within 300 mm.
Ground-Fault Circuit Interrupter
ELECTRIC SIGNS AND OUTLINE LIGHTINGS
Ballast, Transformers, and Electronic Power Supplies
Located where _____ and shall be securely fastened in place.
Wet Location - _____type or of the____ type.
Working Space - At least ,__________(LXWXH mm) deep shall be provided.
d) Attic & Soffit Locations - Permitted to be located provided there is an access door at least _______(mm x mm) of passageway with a walkway of _______(mm).
accessible
Weatherproof / outdoor
900 mm high / 900m wide / by 900 mm
900 mm by 600 mm
300 mm wide
CRANES AND HOISTS
Contact Conductors
Locating or Guarding Contact Conductors - The runway contact conductors shall be guarded, and bridge contact conductors shall be located or guarded in a manner that person cannot _______________
inadvertently touch energized current-carrying parts.
CRANES AND HOISTS
Contact Conductors
Contact Wires - The extreme limit of displacement of the wire is within less than ____(mm)
40 mm
CRANES AND HOISTS
Contact Conductors
c) Supports along Runways - Shall be supported at intervals not exceeding ___(mm)
6000 mm.
CRANES AND HOISTS
Contact Conductors
Supports on Bridges - Bridge wire contact conductors shall be kept at least ________(mm), and, where the span exceeds ____m, insulating saddles shall be placed at intervals not exceeding ____m
65 mm apart
25 m
15 m
CRANES AND HOISTS
Contact Conductors
Supports for Rigid Conductors - Shall be carried on insulating supports spaced at intervals of not more than _______ the vertical dimension of the conductor, but in no case greater than ____(mm), and spaced apart sufficiently to give a clear electrical separation of conductors or adjacent collectors of not less than ______(mm)
80 times
4 500 mm
25 mm
CRANES AND HOISTS
Clearance
Shall have a minimum of___(mm) to access to live parts where the controls are enclosed in cabinets, the door(s) shall either open at least_____ or be removable.
750 mm
90 degrees
SWIMMING POOLS, FOUNTAINS, AND SIMILAR LOCATIONS
Grounding
The following equipment shall be grounded: (7)
- Through-wall lighting assemblies and underwater luminaries (lighting fixtures), other than those low-voltage systems listed for the application without a grounding conductor.
- All electrical equipment located within 1 500 mm of the inside wall of the specified body of water.
- All electrical equipment associated with the recirculation system of the specified body of water.
- Junction boxes
- Transformer enclosures
- Ground-fault circuit interrupters
- Panelboards that are not part of the service equipment and that supply any electrical equipment associated with the specified body of water.
SWIMMING POOLS, FOUNTAINS, AND SIMILAR LOCATIONS
Cord-and-Plug Connected Equipment
a) Length - For other than storable pools, the flexible cord shall not exceed _____(mm) in length.
b) Equipment Grounding - flexible cord shall be made of copper not smaller than _______(mm2).
900 mm
3.5 mm2
SWIMMING POOLS, FOUNTAINS, AND SIMILAR LOCATIONS
Overhead Conductor Clearances
a) Communication Systems - shall be permitted at a height of not less than ____(mm) above
b) Other Clearance Parameters:
3000 mm
SWIMMING POOLS, FOUNTAINS, AND SIMILAR LOCATIONS
Underground Wiring Locations
Wirings shall not be permitted under the pool or within area extending _____(mm) horizontally form the inside wall of the pool unless the wiring is necessary for the pool equipment. Wirings shall be permitted only if installed in _________(3) which is corrosion resistant.
1500 mm
RMC, IMC, or a nonmetallic raceway
SWIMMING POOLS, FOUNTAINS, AND SIMILAR LOCATIONS
Receptacles
Circulation and Sanitation System, Location - Receptacles for water-pump motors or for other loads directly related to the circulation and sanitation system shall be located at least _____(mm) from the inside wall of the pool, or not less than_____(mm) if the conditions of the following are met:
- Consist of single receptacle
- Employ a locking configuration
- Are of the grounding type
- Have GFCI protection
3000 mm
1500 mm
SWIMMING POOLS, FOUNTAINS, AND SIMILAR LOCATIONS
Receptacles
Other Receptacles, Location - Shall be not less than _______(mm) from the inside walls of the pool.
3000 mm
SWIMMING POOLS, FOUNTAINS, AND SIMILAR LOCATIONS
Receptacles
Dwelling Units - A 230V 15 to 20-ampere receptacle on a general purpose shall be located not less than ________(mm) and not more than ______(mm). And, not more than 2000 mm above the floor, or grade level serving the pool.
3000 mm,
6000 mm
SWIMMING POOLS, FOUNTAINS, AND SIMILAR LOCATIONS
Receptacles
GFCI Protection - All______(2) ampere, single-phase, 230V receptacles located within______ of the inside walls of a pool shall be of GFCI type. Also receptacles that supply pool pump motors and that are rated 15 or 20 amperes, 125 to 250 V, single phase
15 and 20
6000 mm
SWIMMING POOLS, FOUNTAINS, AND SIMILAR LOCATIONS
Luminaires (Lighting Fixtures), Lighting Outlets, and Ceiling-Suspended (Paddle) Fans
New Outdoor Installation Clearances - Shall be _______(mm) horizontally from the pool and of height not less than _______(mm) above the maximum water level of the pool.
1500 mm
3600 mm
SWIMMING POOLS, FOUNTAINS, AND SIMILAR LOCATIONS
Luminaires (Lighting Fixtures), Lighting Outlets, and Ceiling-Suspended (Paddle) Fans
Indoor Clearances - Shall be protected by GFCI and of height not less than _______(mm)
- Totally enclosed luminaires (fixtures)
- Ceiling-suspended (paddle) fans identified for use beneath ceiling structures.
2300 mm
SWIMMING POOLS, FOUNTAINS, AND SIMILAR LOCATIONS
Luminaires (Lighting Fixtures), Lighting Outlets, and Ceiling-Suspended (Paddle) Fans
Existing Installations - Luminaires located less than ______(mm) or less horizontally from the pool shall have a height of_____(mm), rigidly attached, and GFCI protected.
1500 mm
1500 mm
SWIMMING POOLS, FOUNTAINS, AND SIMILAR LOCATIONS
________Shall be located at least _____(mm) from the pool and separated by a solid fence, wall, or permanent barriers.
Switching Devices
1500 mm
SWIMMING POOLS, FOUNTAINS, AND SIMILAR LOCATIONS
Junction Boxes and other Enclosures
A junction box or an enclosure connected to a conduit, a transformer, a GFCI, or of similar device that extends directly to a forming shell or mounting bracket of a no-niche luminaire (fixture) shall meet the following requirements:
a) Construction
1. Be equipped with threaded entries or hubs or a nonmetallic hub.
2. Be compromised of copper, brass, suitable plastic or other approved corrosion resistant material.
3. Be provided with electrical continuity between every connected metal conduit and the grounding terminals by means of copper, brass, or other approved corrosion-resistant metal that is integral with the box.
b) Installation
1. Vertical Spacing - Shall be located not less than _____(mm)_ measured from the inside of the bottom of the box, above the ground level, or pool deck, or not less than _____(mm) above the maximum pool water level, whichever provides the greater elevation.
2. Horizontal Spacing - The junction box shall be located not less than ________(mm) from the inside wall of the pool, unless separated from the pool by a solid fence, wall, or other permanent barrier.
3. Flush Deck Box - If used on a lighting system operating at ___V or less, a flush deck box shall be permitted if both of the following apply:
An approved potting compound is used to fill the box to prevent moisture.
The flush deck box is located not less than ____mm from the inside wall of the pool.
100 mm,
200 mm
1200 mm
15 volts
1200
SOLAR PHOTOVOLTAIC SYSTEMS
Ground-Fault Protection
Roof-mounted dc photovoltaic arrays located on dwellings shall be provided with ________ to reduce fire hazards
dc ground-fault protection
SOLAR PHOTOVOLTAIC SYSTEMS
Unbalanced Interconnections
Single Phase - Single-phase inverters for photovoltaic systems and ac modules in interactive solar photovoltaic systems shall not be connected to ________ unless the interconnected system is designed so that significant unbalanced voltages cannot result.
3-phase power systems
SOLAR PHOTOVOLTAIC SYSTEMS
Unbalanced Interconnections
Three Phase - Three-phase inverters and 3-phase ac modules in interactive systems shall have all phases _________ upon loss of, or unbalanced, voltage in one or more phases unless the interconnected system is designed so that significant unbalanced voltages will not result.
automatically de-energized
SOLAR PHOTOVOLTAIC SYSTEMS
Markings
Modules - Shall be marked with identification of terminals or leads as to polarity, maximum overcurrent device rating for module protection, and with the following ratings: (6)
- Open-circuit voltage
- Operating voltage
- Maximum permissible system voltage
- Operating current
- Short-circuit current
- Maximum power
SOLAR PHOTOVOLTAIC SYSTEMS
Markings
Alternating-Current Photovoltaic Modules - Shall be marked with identification of terminals or leads, and with identification of the following rating:
- Nominal operating ac voltage
- Nominal operating ac frequency
- Maximum ac power
- Maximum ac current
- Maximum overcurrent device rating for ac module protection
SOLAR PHOTOVOLTAIC SYSTEMS
Markings
Direct-Current Photovoltaic Power Source -Shall be provided by the installer at an accessible location at the disconnecting means for this power source:
- Operating current
- Operating voltage
- Maximum system voltage
- Short-circuit current
SOLAR PHOTOVOLTAIC SYSTEMS
Storage Batteries
Operating Voltage (Dwelling Units) - Shall have the cells connected to operate at less than ___V nominal. Lead-acid storage batteries shall have no more than___________vc connected in _____ (48-volts nominal)
50 volts
twenty-four 2-volt cells
series
SOLAR PHOTOVOLTAIC SYSTEMS
Storage Batteries
Battery Nonconductive Cases and Conductive Cracks - Flooded, vented, lead-acid batteries with more than ___________vc shall not use conductive cases or shall not be installed in ________. Conductive racks used to support the nonconductive cases shall be permitted where no rack material is located within _____(mm) of the tops of the nonconductive cases.
twenty-four 2-volt cells connected in series (48 volts, nominal)
conductive cases
150 mm
SOLAR PHOTOVOLTAIC SYSTEMS
Storage Batteries
Battery Systems of More Than 48 Volts - The battery system shall be permitted to operate with ungrounded conductors, provided the following conditions are met:
- The dc and ac load circuits shall be solidly grounded.
- All main ungrounded battery input/output circuit conductors shall be provided with switched disconnects and overcurrent protection.
- A ground-fault detector and indicator shall be installed to monitor for ground faults in the battery bank
SOLAR PHOTOVOLTAIC SYSTEMS
Charge Control
Shall be provided to control the charging process of the battery. Charge control is not required where the design of the photovoltaic source circuit is matched to the voltage rating and charge requirements of the interconnected batteries. Maximum charging current multiplied by___hr must be less than __% of the rated battery capacity in ampere hour
1 houR
3%
.
.
