Q:Power cable in the cable tray is a single layer of laying, or can be stacked together with multi-layer laying?

N power supply is not enough, two methods. 1 for a separate power supply hub2 with a usb extension cable directly into the chassis behind, trick: your mobile hard disk should have two usb mouth and then, find a high-power charger on the line, that is, with usb That kind of mouth of the charger, remember is a high power, or give you burn the charger

Q:Seeking: cable tray 100cmx10cm bracket installation spacing requirements

cable bridge and electrical equipment cross, the gap between the distance of not less than 0

Q:How many meters to make a fixed bracket bracket

1 square millimeter of wire allows current through 5A. So you can use 2.5 square millimeters or 4 square millimeters of wire on it.

Q:I am mainly doing street lighting project (including street-powered box-type substation installation), if any specific details of the other prizes, thank you! Question added: Please do my project sub-division, sub-items, inspection batch Tell, must re-thank more

1-2008 Mining rubber flexible cables Part 1: General provisions GB / T

Q:Do not use fire blocking material? Question added: commonly used models of fire pack specifications which ah more

General municipal engineering of the weak cable pipe, refers to the radio and television systems, communications systems, closed-circuit television, monitoring systems, fire linkage system, video intercom systems and other wiring and pipeline

Q:How to practice climbing and how to climb the bridge

Information outlet with wall type, ground type, sitting on a variety of types

Q:There is no fireproof bridge in the cable tray

The trough is closed; the tray is the bottom of the bridge there are many waist-shaped hole to facilitate the heat; ladder of the bottom like a staircase, the side of the baffle, dusty places with ladder, not fouling. The trough and tray are different from the bottom, with holes and no holes. Trough is not conducive to heat, tray heat slightly better.

Q:Whether it can be in the bridge under a layer of 60mm polystyrene board, at home 20mm asbestos insulation, insulation layer wide out of the edge of the bridge 200mm? The The Hurriedly ... can you? More

Viewing star - set-top box companion one. To achieve free to watch radio and television digital TV function sluggish rough end Nao stubble full length households two. To achieve two (multiple) TV viewing function three. Free to see the function of value-added program package

Q:What is the profit of the cable tray?

Cable bridge profit and many factors, such as steel prices, processing means, cutting technology, market demand, staff salaries, but the current general manufacturers profits can reach more than 15%. Profit is also called net profit or net income. From the narrow income, the cost, the profit includes the difference between the income and the expense, as well as other directly included in the profit and loss gains, losses. From the broad sense of income, cost, profit is the difference between income and cost. Profits according to its formation process, divided into pre-tax profits and after-tax profits. Pre-tax profit is also called the total profit; pre-tax profits minus income tax costs, that is, after-tax profits, also known as net profit.

Q:Shaft bridge 400 * 200 bracket should be how many meters a

It should be cable terminal processing, they can be processed ah