Figure, if it is KVV-5 * 2.5 control cable, then the amount of engineering is 3.5 + 2.8 +3 3.1 (temporarily consider the reservation). Is this right? If this is the case, how is the control cable triangular connection? What normative. Ask one or two. Questions added: more
Detailed information you can refer to 08X101-3 integrated wiring system engineering design and construction, "power engineering cable design specifications" GB-. 10kv and below substation design specifications GB-. general power distribution design specifications GB-. etc. These specifications, because you do not give detailed drawings, I do not know how many control terminals on your left and right sides, according to my understanding 3.5 meters should be a 5 * 2.5 cable, and 2.8 meters and 3.1 meters Paragraph should be separated from the 3.5-meter section of the loose line, if so you should be the amount of engineering is 3.5 + 3.1 (if it is 3.5 meters out of the line, then meet the requirements of the short, the short section is bound to meet).
According to your algorithm, if it is more formal boundaries, in the sub-cable where to add a junction box. If it is home improvement inside, the docking junction box as long as a 80 empty box if it is used in industry, I suggest you install a 10-point of 3.5 meters at the exit where the junction box (there are 8n 10n or terminal . or why should 8n 10n it? 6n 2.5 line as long as you can, but you have to be here at the terminal two wire connection, which is compliant, so large dot may be used, the terminals shorted 6n), and a cable with a 3.5 + 2.. 3.5 + 3.1 a, respectively, to the two devices. such when you check the line after a good check some up and down the line terminal cover small bald (that is, the plastic casing, the industry often used for identification), where the white head to write up the device. this approach is the best. intermediate cable is not allowed to joints, forxy answered a bunch of norms cited the name, but in fact he is wrong, in which the formal connection, and then cut the cable conduit is not allowed to go. in the light on the control cabinet or box only allowed in the application. in addition to the ground wire. I specialized in plant instrumentation and control I do 10 years.
Mainly to see what equipment, if the bus system, at the intersection of the wiring even read, your algorithm is completed. Wiring specifications consistent color on the line ah.
