what is the largest size overcurrent protection device (fuse or breaker) allowed to protect the circuit ?
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If (4) 3/0 THHN/THWN wires are run in a conduit and the conduit is run inside a building, what is the largest size overcurrent protection device (fuse or breaker) allowed to protect the circuit ?
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- QUESTION 3 We are running 3 wires and a ground in a RMC to a control panel with a 60 amp circuit breaker disconnect in the control panel. The conduit is run along the ceiling where the ambient air temperature is 100 degrees. The control panel feeds our secondary cooling pump. What size are the ungrounded conductors? All conductors have typeTHHN insulation.What's the maximum number of 400 kcmil THHN conductors that can be installed in a 6 in. x 6 in. wireway?If three #10 AWG THHN/THWN wires were run in a conduit inside a building the MAXIMUM size fuse or circuit breaker you could use to protect these wires would be
- If the NEC provides a requirement to grounding equipment, it generally implies that there will be a direct connection to Earth of connection through a/an A. Equipment grounding conductor B. Bonding conductor C. Grounding electrode conductor D. Equipotential bonding conductor4.A. If a bonding jumper is installed from a grounded metal box to a grounding-type receptacle, the length ofthe bonding jumper will be betweenA. 2 and 4 feet.B. 2 and 4 inches.C. 6 and 10 feet.D. 6 and 10 inches.4.B. Why isn't solder permitted to be relied on for grounding electrode connections?A. The solder increases the chances of a ground-fault event occurring.B. The heat from the solder weakens the connection and exposes it to physical damage.C. The use of solder doesn't meet the requirements for corrosive influences.D. The connection's integrity can be negatively affected by heat during a ground-fault event.4>c. Which of the following statements about bonding is true?A. The strike terminals of a lightning protection system must be bonded to the building or structure grounding electrode system.B. Bonding requirements on the supply side of the service disconnect are less restrictive.C. Wire-type supply-side bonding jumpers are usually short in length and installed from the…In the conduit diagram shown in Figure 1–3, determine how many wires are in each conduit between each piece of equipment. Identify each wire terminal connection and the quantity of wires, as shown in the example, above the disconnect switch.
- Multiple Choice. Refers to a point in a circuit where three or more wires are connected. A. Conductor B. Junction C. Loop D. ResistorWhat is the branch circuit protective device?QUESTION 12 What is the minimum sized IMC conduit we should use for the above wire run if it is 24 inches long? a 1/2" b 3/4" c 1" d 1 1/4"
- What type of conduit that should be used where corrosion is a factor?Two #12 THW copper conductors and one # 12 grounding conductor are pulled in a 49'-9" run of 3/4"conduit which is available in 10' lengths. How many pieces of conduit are required?what are the three types of conduit that can be bent with a hand bender? list code article associated with them.