| A | B |
|---|
| school general lighting load | 3va |
| minimum size overhead service drop | #8 or larger |
| circuit breaker ON is | UP position |
| smallest grounding electrode | #8 |
| minimum size for grounding instrument transformers | #12 CU. #10 AL. |
| circuit breaker as a switch | SWD |
| copper buss bar | 1000 amperes per Sq. In. |
| aluminum buss bar | 700 amperes per Sq. In. |
| bushing fiber or plastic | #4 or larger conductor |
| air conditioner hard wired | over 250 volts |
| air conditioner room 120 volts | 10' cord max |
| air space in a wet location | 1/4" |
| NM ampacity | 60c |
| fixture over bath tub | 8' |
| no overcurrent devices | bathroom |
| no overcurrent devices | clothes closet |
| binding screw or stud | #10 or smaller |
| bonding jumper TV, communication | #6 |
| combustible wall set back | 0" |
| non-combustible wall set back | 1/4" |
| length of conductor in a box | 6" |
| dwelling unit outlets | 12' spacing no more than 6' from an outlet |
| non dwelling unit outlet rating | 180 va |
| angle pull | 6 times |
| straight pull | 8 times |
| branch ckt. outdoor overhead | min #10 50' or less |
| continuous loads | 125% |
| fixture socket maximum weight | 6 lbs. |
| direct buried cable | protected not more than 18" below grade |
| Class 1 locations | Flammable gases, vapors, liquids |
| Class 2 locations | combustible dust |
| Class 3 locations | ignitible fibers, flyings |
| Class 1 remote control and signaling ckts. | not over 600 volts |
| Class 1 sealing compound | 5/8" thick min. |
| not standard fuse | 55 amperes |
| not standard circuit breaker | 550 amperes |
| co-ax cable voltage | 60 volts max |
| bonding grid for pool | #8 solid |
| CATV bonding jumper | #6 |
| Commercial garage floor area | Class 1 Division 2 |
| communication drop over flat roof | 8' |
| conductors considered outside of the building | 2" concrete |
| conductors in plenums | not NM (Romex) |
| conduit bodies (LBs) | accessible |
| conduit on washed walls | 1/4" air space |
| conduit nipples 24" or less | 60% fill |
| # of conductors in pipe 1 | 53% |
| # of conductors in pipe 2 | 31% |
| # of conductors in pipe over 2 | 40% |
| AC disconnect | within sight or lockable |
| motor disconnect | within sight or lockable |
| bare copper concentric | USE cable |
| outlet in crawl space | GFCI protected |
| outdoor outlets | GFCI protected |
| within 6' of a sink | GFCI protected |
| within 3' of bathroom basin | GFCI protected |
| garage outlets dwelling unit | GFCI protected |
| kitchen counter top outlets | GFCI protected |
| boat houses | GFCI protected |
| commercial kitchens 15, 20a outlets | GFCI protected |
| outdoors | GFCI protected |
| bathroom commercial | GFCI protected |
| rooftops | GFCI protected |
| nurse call system | critical branch circuit |
| physical damage | schedule 80 PVC |
| transformer vault damper | 1 1/2 hrs. rated |
| holiday lighting | 90 days |
| damp location | protected from the weather |
| heater elements sub divided | 48 amps/ 60 OCP |
| OCP | over current protection |
| elevator lighting | separate circuit |
| dwelling unit outlet load | 0 va included in general lighting |
| #18 ga fixture wire | 6 amperes |
| #16 ga fixture wire | 8 amperes |
| #14 ga fixture wire | 17 amperes |
| #12 ga fixture wire | 23 amperes |
| #10 ga fixture wire | 28 amperes |
| emergency back up | 10 seconds |
| legally required back up | 60 seconds |
| optional back up | no time limit |
| elevator parallel conductor | smallest #20 ga |
| parallel conductor building wire | 1/0 smallest |
| equipment terminal 100 amperes or more | 75c rated |
| equipment terminals less than 100 amperes | 60c rated |
| ceiling outlet box | up to 50 lbs. |
| #8 FEPB Cu. | 80 amperes |
| volume allowance #18 | 1.5 Cu. In. |
| volume allowance #16 | 1.75 Cu. In. |
| volume allowance #14 | 2.00 Cu. In. |
| volume allowance #12 | 2.25 Cu. In. |
| volume allowance #10 | 2.5 Cu. In. |
| volume allowance #8 | 3.00 Cu. In. |
| volume allowance #6 | 5.00 Cu. In. |
| festoon lighting | outdoor |
| bathroom floor heated | GFCI protected |
| ground rod length | 8' |
| GFI | not in bedroom |
| 240v exposed live parts both sides | 3' |
| service not over 300v | 12' above driveway |
| free conductor at boxes | 6" |
| insulation high heat wet location | THHW |
| insulation high heat wet nylon cover | THWN |
| Aluminum rigid sizes | 1/2" thru 6" |
| rigid conduit maximum bends | 4 quarter bends |
| runnung threads | not allowed |
| CO/ALR | for Aluminum connections |
| Code letter "P" | motors marked 12.5 Kva |
| three phase overloads | one for each phase |
| seal offs | minimize passage of gases, vapors and flames |
| sign in wet location | 1/4" drain holes |
| communication wire separated from building wires | 4" |
| 1/0 bare | .109 sq in |
| #12 | 6530 cm |
| #2 XHHW-2 | 66360 |
| #2 bare | .067 sq in |
| transformer with askarel | 6" to combustible materials |
| service conductors 30" down | warning tape 12" above |
| #14s in a 3X2X2 box | 5 |
| #12s in a 3X2X2 box | 4 |
| 4X4X1-1/2" box | 21 cu in |
| #12s in a 100X54X48 box | 5 |
| Control circuit devices with screw-type pressure terminals used with 14 AWG or smaller copper conductors shall be torqued to a minimum of | 7 lb-in |
| Capable of being removed or exposed without damaging the building structure or finish or not permanently closed in by the structure or finish of the building. | Accessible (as applied to wiring methods) |
| An organization, office, or individual responsible for enforcing the requirements of a code or standard, or for approving equipment, materials, an installation, or a procedure. | Authority Having Jurisdiction (AHJ) |
| All circuit conductors between the service equipment, the source of a separately derived system, or other power supply source and the final branch-circuit overcurrent device. ( | Feeder |
| The circuit conductors between the final overcurrent device protecting the circuit and the outlet(s). | Branch Circuit |
| A system or circuit conductor that is intentionally grounded. | Grounded Conductor |
| Where this Code specifies that one equipment shall be “in sight from,” “within sight from,” or “within sight of,” and so forth, another equipment, the specified equipment is to be visible and not more than 15 m (50 ft) distant from the other. | In Sight From (Within Sight From, Within Sight) |
| A location not normally subject to dampness or wetness. A location classified as dry may be temporarily subject to dampness or wetness, as in the case of a building under construction. | Location, Dry |
| Installations underground or in concrete slabs or masonry in direct contact with the earth; in locations subject to saturation with water or other liquids, such as vehicle washing areas; and in unprotected locations exposed to weather. | Location, Wet |
| Locations protected from weather and not subject to saturation with water or other liquids but subject to moderate degrees of moisture. | Location, Damp |
| A point on the wiring system at which current is taken to supply utilization equipment. | Outlet |
| One who has skills and knowledge related to the construction and operation of the electrical equipment and installations and has received safety training to recognize and avoid the hazards involved. | Qualified Person |
| Constructed or protected so that exposure to a beating rain will not result in the entrance of water under specified test conditions. | Raintight |
| Rainproof | Constructed, protected, or treated so as to prevent rain from interfering with the successful operation of the apparatus under specified test conditions. |
| The written consent of the authority having jurisdiction. | Special Permission. |
| Constructed so that moisture will not enter the enclosure under specified test conditions. | Watertight |
| Constructed or protected so that exposure to the weather will not interfere with successful operation. | Weatherproof |
| Enclosures constructed so that dust will not enter under specified test conditions. | Dusttight |
| Type of protection where any spark or thermal effect is incapable of causing ignition of a mixture of flammable or combustible material in air under prescribed test conditions | Intrinsic Safety “i”. |
