North Carolina Intermediate Electrical Contractor (I)

250.22(1) prohibits grounding of electric crane circuits operating over combustible fibers in Class III locations (per 503.155), while the systems listed in 250.21(A) are merely permitted — not required — to be grounded.

In a supervised industrial installation, conductors protected by a device rated over 800 A may have an ampacity of not less than 95 percent of the device rating when the short-circuit time-current and listed/marked termination conditions are met; outside Part VIII, conductor ampacity must equal or exceed 100 percent of the device rating.

16 AWG copper may be protected at 10 A with continuous load not over 8 A (branch-circuit-rated breaker/fuse listed and marked for 16 AWG, or Class CC, J, or T fuse), while 5.6 A is the continuous-load limit that applies to 18 AWG copper.

Under 240.24(B)(2), where service and maintenance are provided by building management under continuous supervision, branch-circuit OCPDs for guest rooms/suites without permanent cooking provisions may be accessible only to authorized management personnel; units with permanent cooking provisions are not included in that allowance and the occupant must have ready access.

Per 200.6(B)(4), 4 AWG or larger insulated grounded conductors may be field-identified at installation with a distinctive white or gray marking encircling the conductor at terminations, while 6 AWG and smaller must use a factory means listed in 200.6(A) and generally may not be field-marked.

A fuse's continuous ampere rating shall not exceed three times conductor ampacity, whereas the six-times limit applies to a circuit breaker's long-time trip element setting or an electronically actuated fuse's minimum trip setting.

Per 440.64 the flexible cord may not exceed 3.0 m (10 ft) at 120 V, but is limited to 1.8 m (6 ft) at 208 or 240 V.

440.22(A) limits the branch-circuit short-circuit/ground-fault device to 175 percent of rated-load current (or branch-circuit selection current, whichever is greater); only where that setting will not carry the starting current may it be increased, never over 225 percent.

A master alarm box is publicly accessible AND can also be actuated by remote initiating devices or an auxiliary alarm system, while an auxiliary alarm box can only be operated from remote devices/auxiliary system and a publicly accessible alarm box houses only a manually operated transmitter.

In a lump-sum contract the contractor completes the project for a predetermined price and assumes all risk, including added costs from unforeseen circumstances; under cost-plus the owner reimburses actual labor and material costs plus a markup (percentage or fixed fee) for overhead and profit.

Mediation uses an independent third-party mediator to facilitate dialogue while the parties themselves set the terms of any agreement; collaborative law has the parties negotiate through their own advocates (usually lawyers) with no neutral mediator or arbitrator involved.

A C corporation suffers double taxation (corporate profits taxed, then dividends taxed to shareholders), while an S corporation is limited to no more than 100 shareholders who are U.S. citizens or legal residents.

A payment bond guarantees subcontractors and suppliers are paid for work properly performed, while a performance bond guarantees the contractor completes the contract within its time frame and conditions.

Chapter 9, Table 1 allows 31 percent fill when exactly two conductors are installed, but 40 percent when three or more conductors are installed.