THREADED TYPE EMT ENTRANCE CAPS-ALUMINUM,Service entrance caps

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$0.05 - 2.50 / pc
Loading Port:
Ningbo
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TT or LC
Min Order Qty:
1000 pc
Supply Capability:
300000 pc/month

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Product Description:

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.

 

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Q:How to solve the computer connected to the TV audio problem, how to set the computer and TV audio separation
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: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: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: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 25mm² copper cable 35mm² 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 = 1558mm² aluminum cable S = PL / CS = U06 / 46X5 = / 230 = 2307mm² 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 (mm²) (quoted from "electrical entrance permit test low pressure Class theory "" electrical engineering basis ")
Q:5 air conditioning can be used 4 square cable
You do not use the 9V power supply, a long time will burn the router.You'd better measure the original adapter voltage, if you want to extend the power cord, it is best to use a thick line of reliable connection, you can not start now, you can not start Depending on whether the extension line is too thin, causing the voltage drop too much.It is necessary to extend the front end of the adapter can extend the 220V power cord.
Q:Apple 6 Charging Why always show this cable has not yet been certified
Is the power directly out of the CPU power supply line or on this basis and added the extension line
Q:Is the cable head made of every building?
Building in accordance with the floor or unit configuration distribution box, there are office buildings using a total box. Where there is a cable out of the situation, must be wrapped to make the cable head, according to the choice of distribution box circuit breaker wiring crimp or not crimp the cable terminal. In other words, the cable head must be made, but not necessarily crimp the cable terminal.
Q:25 square copper cable how much money one meter?
Copper should be more than 2.7 flat. Aluminum to 4.5 or more.
Q:Decoration doubt, what kind of wall can not open the horizontal groove?
Excretion training is the use of positive reinforcement, that is, a variety of food, toys, the best time to reward
Q:How to distinguish how many pairs of cable with a large heat shrink tubing
As long as the line connected to the corresponding location, that is, audio cable audio and video cable, video cable can be used with the video line.

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