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: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.

Q:Can the main cable be aluminum cable? And explain why, thank you!

Reply to the landlord: I read a part of the literature, more Google is aware of the following part may be your reference weak construction specifications 1

Q:The difference between nylon balls and geese and ducks

As long as the cable is thick enough, 20 meters of the basic loss can be ignored.

Q:1000 kW 600 m cable to use much

1000kw ah that with three groups of 400-ping line should be no problem

Q:How do I ask for cable prices? How many tons is one or more?

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.

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:25 square copper cable how much money one meter?

Copper should be more than 2.7 flat. Aluminum to 4.5 or more.

Q:3 by 16 cable is a few flat? How? That 5 by 16?

Is the power directly out of the CPU power supply line or on this basis and added the extension line

Q:What is the meaning of PG + digital markings for electrical wiring?

Will the general power cable control cable can do the largest square...