THREADED TYPE EMT ENTRANCE CAPS-ALUMINUM,Service entrance caps

THREADED TYPE EMT ENTRANCE CAPS-ALUMINUM,Service entrance caps System 1

THREADED TYPE EMT ENTRANCE CAPS-ALUMINUM,Service entrance caps

Ref Price:: $0.05 - 2.50 / pc

Loading Port:: Ningbo

Payment Terms:: TT or LC

Min Order Qty:: 1000 pc

Supply Capability:: 300000 pc/month

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Service Entrance Cap
1 Material: Aluminum
2 Type: Threaded type or Clamp type
3 Size: 1/2 inch—4inch
4 Apply: connecting EMT conduit / IMC conduit
Field Names: Service entrance caps, weather heads, service entrance heads, service entrance kits,
cobra heads, weather caps, utility service caps, meter heads, service heads.

Application:

These service entrance caps attach to the end of plain EMT conduits that are being used to bring over-head
power to buildings or homes. Their clamp-on design and large insulator yoke allows the cables from meers to be hung outside of service heads without the fear of abrasion while waiting fro the utility power connections. 1/2" to 4" sizes are available.

THREADED TYPE EMT ENTRANCE CAPS-ALUMINUM,Service entrance caps

Q: 1000 kW 600 m cable to use much: Such a large load so far away, can only be transported with 10KY, near the installation of the transformer Caixing, if the 380V transmission, cross-sectional area, high cost, loss of large, not worthwhile. 10KV high-pressure delivery, current 55A, with 25mm? copper cable 35mm? aluminum cable delivery on it. If the 380V transmission, according to the line voltage loss simple calculation formula △ U% = PL / CS take △ U% = 5 copper cable S = PL / CS △ U% = 1000X600 / 77X5 = / 385 = 1558mm? aluminum cable S = PL / CS = U06 / 46X5 = / 230 = 2307mm? Line voltage loss △ U Simple calculation formula △ U% = PL / CS △ U% - Percentage of voltage loss P - Active power of conveying (Kw) Distance of L- M) C-constant, aluminum single-phase 8.. aluminum three-phase four-wire 46; copper single-phase 12.. copper three-phase four-wire 77S-conductor cross section (mm?) (quoted from "electrical entrance permit test low pressure Class theory "" electrical engineering basis ")

Q: Is the cable head made of every building?: Generally have every building floor wiring closet must be connected to the big cable. The big cable comes in to do the cable head

Q: What is the meaning of PG + digital markings for electrical wiring?: The best cement and other dry in the closing, because the wet cement contains moisture, can be conductive, dry the probability of conduction less. Pay attention to the wire to maintain integrity, no broken skin, it is best to protect the casing.

Q: How much of the cable with the switch?: The switch is not selected according to the cable and is selected according to the current. The cable is determined by the size of the power (converted to current) and the distance from which the distance is far. The greater the power distance, the greater the cross-sectional area of the required cable. For example: 15KW motor selection cable current I = P / 1.732UcosΦ = 15 / 1.732 / 0.38 / 0.8 = 28A if it is close (within tens of meters), copper cable 6 square millimeters, aluminum cable 10 square millimeters. If it is in the distance (a few hundred meters), copper cable 10 square millimeters, aluminum cable 16 square millimeters. If it is long distance (close to kilometers), copper cable 16 square millimeters, aluminum cable 25 square millimeters. The switch is regardless of distance, completely based on the load current to choose, generally according to the load current of 1.5 times to 2 times to choose.

Q: Does anyone know the "line buckle" classification (including shape / size / material / has been some commonly used size!) Line deduction is a hardware products! For daily necessities!: heat shrinkable casing (MRSG) is a new environmentally friendly halogen-free flame retardant casing, inexpensive products, for wire, cable and wire terminals to provide insulation protection

Q: Can the main cable be aluminum cable? And explain why, thank you!: Power board problem cost 10 less than the general maintenance received you 150

Q: 5 air conditioning can be used 4 square cable: Such as the extension line added to the adapter primary (city side) certainly easy to use. Extended by two meters, the router does not start, may be extended wire diameter is too thin, bold wire try. If not, choose 6V2A adapter try, the voltage is too high will burn the router. Increase the current is no problem, just like the computer's power, 300-watt power can be replaced, and small is not OK.

Q: The difference between nylon balls and geese and ducks: If the 2.5 square copper wire for the output extension cable, 20 meters distance, the total resistance of about 2 * 1.7 * 0.2 / 2.5 = 0.272 (ohms), the current maximum 1.8A, the voltage drop is 0.272 * 1.8 = ), The charging voltage is 55-0.5 = 54.5 (volts), a difference of about 1% will not have any impact on the battery. However, the third floor, said Ye Hao, you can put the charger put the debris room, from your house put a 220V power cord down, home and then engage in a switch control. It is best to design a light at home, can intuitively see if the electricity is full. That's better. Design light, teach you a way: to find a bad leakless protector, open there is a coil-like ring-shaped stuff, called zero sequence current transformer, it will be down, be careful, do not put Transformers inside the coil hurt, get down, in the transformer two thin lines connected to a light-emitting diode. And then your 220V power cord line of fire from the center of the sensor through, around 3-5 turns. In this way, as long as there is current flow, the light-emitting diode will be bright, when the charge is over, the charging current is close to zero, the light-emitting diode will be extinguished. You can from the light-emitting diode is lit to determine whether the electric has been filled. I also have an electric bike that is so charged.

Q: 6 square cable up to how many air conditioning (1.5P): 7 kilowatts of electricity with what specifications of the wire if it is single-phase 220V, then 7 kilowatts of current is 7000 × 220V = 31.8A, check the electrical manual 4 square copper wire interception is 33A, to meet the requirements.