June Flashcards
What is the minimum size Intersystem Grounding Conductor?
6 AWG
250
Grounding and Bonding
- 94(1)(2)(3)
- 94 Bonding for Other Systems.
(1) A set of terminals securely mounted to the meter enclo-
sure and electrically connected to the meter enclosure.
The terminals shall be listed as grounding and bonding
equipment.
(2) A bonding bar near the service equipment enclosure,
meter enclosure, or raceway for service conductors.
The bonding bar shall be connected with a minimum
6 AWG copper conductor to an equipment grounding
conductor(s) in the service equipment enclosure, meter
enclosure, or exposed nonflexible metallic raceway.
(3) A bonding bar near the grounding electrode conductor.
The bonding bar shall be connected to the grounding
electrode conductor with a minimum 6 AWG copper
conductor.
In a Class 1 Hazardous location, what type of cables can be installed in cable trays, raceways, and or supported by messenger wire?
PLTC ( Power Limited Tray Cable )
511
Commercial Garages, Repair and Storage
- 7(A)(1)
- 7 Wiring and Equipment Installed Above Class 1 Locations.
(A) Wiring in spaces above Class 1 Locations
(1) Fixed Wiring Above Class I Locations. All fixed wir- ing above Class I locations shall be in metal raceways, rigid nonmetallic conduit, electrical nonmetallic tubing, flexible metal conduit, liquidtight flexible metal conduit, or liq- uidtight flexible nonmetallic conduit, or shall be Type MC, AC, MI, manufactured wiring systems, or PLTC cable in accordance with Article 725, or Type TC cable or Type ITC cable in accordance with Article 727. Cellular metal floor raceways or cellular concrete floor raceways shall be per- mitted to be used only for supplying ceiling outlets or ex- tensions to the area below the floor, but such raceways shall have no connections leading into or through any Class I location above the floor.
What is the maximum Voltage allowed for lighting in a Water Fountain
150 Volts between conductors
680
Swimming Pools, Fountains, and Similar Locations
- 51(B)
- 51 Luminaires, Submersible Pumps, and Other Submersible Equipment
(B) Operating Voltage.
No luminaires shall be installed for operation on supply circuits over 150 volts between conductors. Submersible pumps and other submersible equipment shall operate at 300 Volts or less between conductors.
Lighting systems operating at 30 Volts or less shall be installed not less than _____ horizontally from the nearest edge of the water.
10 feet
411
Lighting systems operating at 30 Volts or less
- 4(B)
- 4 Specific Location Requirements.
(B) Pools, Spas, Fountains, Similar Locations.
Lighting systems shall be installed not less than 10 feet horizontally from the nearest edge of the water, unless permitte by Article 680.
When you have the following conductors, White, Black, Blue, Orange, Purple, and Yellow with 3 Grey Stripes. How many systems do you have.
Two
A 125-volt, Single-phase, 15-20 ampere rated receptacle outle shall be installed at an accesible location for the servicing of heating, air-conditioning, and refrigeration equipment. The receptacle shall be located on the same level within _____ of the heating air-conditionting.
25 Feet
210
Branch Circuits.
210.63 Heating, Air-Conditioning, and Refrigeration Equipment Outlet.
A 125-Volt, single-phase, 15-20 ampere rated receptacle outlet shall be installed at an accesible location for the servicing of heating, air-conditioning, and refrigeration equipment. The receptacle shall be located at the same level and within 25 feet of the HACR equipment. The receptacle outle shall not be connected to the load side of the equipment disconnecting means.
If you have 2 sets of Parallel conduits, each conduit has a set of 3/0 conductors and there is a 400 amp fuse. What size equipment grounding conductor do you have to put in each conduit.
3 AWG copper/ #1 AWG aluminium
Table 250.122
Rating or Setting of Automatic Overcurrent Device in Circuit Ahead of Equipment, Conduit, etc. Not Exceeding
(Amperes)
400 Amp Fuse
Size (AWG or kcmil)
Copper- 3AWG Aluminum- 1AWG
In a Garage, the requirement for a switch controlled luminaires location would be?
A Garage door for main entrance
In a multi-unit dwelling of four stories, romex has been used for branch circuit wiring, SE cable encased in RMC was used for the service and emt runs through return air plenums extends outside to feed outside lights. According to NYC code which wiring method is excepted?
Service Entrance Conductors in RMC
338
Service Entrance Cables, SE and USE
- 10(A) NYC AMENDMENT
- 10 Uses Permitted
(A)Where installed as service entrance conductors, Type SE cable shall be enclosed in a threaded metallic conduit.
What is the spacing for CATV wiring over lightning conductors?
6 Feet
820
Community Antenna Television and Radio Distribution Systems
- 44(F)(1)
- 44 Overhead Coaxial Cables
(F) On Buildings
(3) Lightning Conductors
Where practicable, a seperation of at least 6 feet shall be maintained between coaxial cable and lightning conductors
An HVAC unit is to be connected and contains an ignitor coil. How man circuits does that require?
ONE
A Stationary X-Ray machine will be connected to a 30A Circuit. What type of connection is ok?
Hard service cable and attachment plug
660
X-Ray Equipment
- 4(A)
- 4
Connection to supply circuit.
(A) …. Equipment properly supplied by a branch circuit rated at not over 30 amps shall be permitted ot be supplied through a suitable attachment plug can and hard-service cable or cord.
Supply Service drops of 0-750 volts running above and parallel to communication service drops shall have a seperation of
12 Inches
800
Communications Circuits
- 44(A)(4)
- 44 Overhead Communications Wires and Cables.
(A) On poles and In-Span
(4) Clearance
Supply service drops of 0-750 volts running above and parallel to communication service dropos shall have a minimum seperation of 12 inches at anhy point in span, including the point of and at their attachment to the building, provided that nongrounded conductors are insulated and that a clearance of not less than 40 inches is maintained between the two services on the pole.
