While pulsed discharges are thought to be less damaging to cable than a steady dc voltage, utilities have concern that thumping can damage the unfailed sections of cable. When a thumper pulse breaks down the cable, the incoming surge shoots past the fault. When it reaches the open point, th...
Here’s how to landscape safely around buried cable lines: plan ahead, mark the utility lines, keep power tools away from the tolerance zone, learn what you can install above utility lines, and know where the trees fit in. Why do you need to take precautions? Underground utility lines are...
Splices are required in underground cable for a variety of reasons. They are required if digging equipment accidently hits a wire, or if the wire connection fails during the original installation. Regardless of why a splice is needed, the repair process is the same, and uses something called a...
Intermittent faults are notoriously hard to find. If you don’t know when they’ll occur, you need some form of data logging. But to track them down they have to be correlated to the events that cause them. You may also need to transfer the data remotely
If necessary, you can refer to If it helps, don't forget to likeit❥ The WeChat public account has been opened,Cai Nong said, students who didn't pay attention remember to pay attention! What I bring today is the reading notesof "How the Internet is Connected" ...
Q: How do I know which plastic material to choose? A: This depends on application specifics. PVC is common for indoor use, while HDPE may be preferred for outdoor and underground applications due to its strength and flexibility. Q: What maintenance is required fo...
The floor sections included preassembled ducts forphone linesand electrical cable, to make things easier for the electricians who would come in later. After the steel structure was in place, the crew attached the outer "skin" to the perimeter — anodized aluminum, precut into large panels. ...
Any lines carrying signals into your home can also carry a power surge, due to lightning or a number of other factors. If you have a coaxial cable line hooked up to expensive equipment, consider a cable surge protector. Surges on these lines can do just as much damage as surges over ...
Step 3:Check the wiring diagram. In the usual master station-substation installation, only the master station connects to the household's electrical system. Multiwire cable links the substations to the master station. If such cable is not supplied with your kit, or if you need additional cable...
The Underground (the Tube) is often the best way to get around London © David Prado Perucha / Shutterstock The Tube (the London Underground) is the quickest and easiest The London Underground, or "the Tube," is the city's subway running across 11 different color-coded lines, with only...