As everyone knows, plumbing and electrical work have always been the key priorities in any renovation project. If these aspects are overlooked during construction, even the slightest problem that arises later can turn into a full-blown disaster—requiring not only time-consuming repairs but potentially even demolition and reinstallation. Below, we’ll walk you through… Plumbing and electrical installation What are the key points?

　　A crucial aspect of plumbing and electrical installation is thorough planning and design, including the preparation of detailed plumbing and electrical drawings. Do not arbitrarily cut grooves in the floor to route conduit or drill holes to secure piping; always ensure that such work avoids existing service lines. It is strictly prohibited to run electrical wires directly inside walls, underground, beneath floors, or on ceilings without proper protective measures. Conduit for electrical circuits must be routed separately, and it is absolutely forbidden to place conductors carrying different voltages, belonging to different circuits, or transmitting different types of signals within the same conduit. In addition to these requirements, Plumbing and electrical installation Another important point is that the installation of plumbing and electrical systems inevitably involves cutting grooves and drilling holes; however, care must be taken during these operations to avoid damaging existing wiring and piping. When laying electrical cables, always use conduit to protect the wires. It is never acceptable to bury electrical wires directly in walls or on the floor, as this is highly unsafe and makes future repairs extremely difficult should problems arise. Plumbing pipes are generally divided into cold-water pipes and hot-water pipes. After installing the hot-water pipes, a pressure test must be conducted and documented; only after confirming that the system passes the test should the next step be carried out, to prevent losses caused by pipe leaks.

　　During plumbing and electrical installation, trenches must be laid level and plumb, with uniform depth, and bends should have a radius of 20–30 cm. When cutting trenches that encounter reinforcing bars, care must be taken to avoid breaking the reinforcement; long horizontal trenches for conduit routing are not permitted, as they can easily damage load-bearing structural walls. In addition, for PVC electrical conduits with a diameter less than 25 mm, bending machines designed for hot-bending should not be used to create sharp bends; during conduit routing, sharp right-angle bends should be avoided as much as possible. Conduit should never be routed inside plaster moldings, as this can lead to severe kinks and trapped air pockets. A water-tightness test is essential. In areas with high water usage, such as bathrooms and kitchens, waterproofing must be carried out, followed by a thorough water-tightness test. This test effectively verifies the success of the waterproofing and helps prevent leaks during later use. If a leak does occur after occupancy, not only will all floor coverings need to be removed and the waterproofing redone, but damage may also be inflicted on the occupants below. Another critical point is proper treatment of wire splices: electrical connection points must be securely wrapped and insulated. As is well known, multiple wires within a room often create numerous junctions, which are typically taped with electrical insulation tape. However, due to poor workmanship, these joints are frequently not properly sealed, which is a common mistake. Therefore, during plumbing and electrical installation, all splice points must be meticulously treated; in particular, wire splices in kitchens and bathrooms should be thoroughly waterproofed to ensure they remain protected from moisture.

　　The above article provides an introduction to… by the editor. Plumbing and electrical installation Here’s some relevant information on the key points. If you weren’t familiar with them before, now’s your chance to take a look. In the next episode, we’ll cover more related knowledge—don’t forget to tune in!