science

On-premises wiring

On-premises wiring is a science topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand On-premises wiring rather than just read about it. In short: On-premises wiring (customer premises wiring) is customer-owned transmission or distribution lines. The transmission lines may be metallic (copper) or optical fiber, and may be installed within or between buildings.

Key takeaways

On-premises wiring belongs to science; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect On-premises wiring to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of On-premises wiring from memory before moving on to harder problems.

Reference excerpt

On-premises wiring (customer premises wiring) is customer-owned transmission or distribution lines. The transmission lines may be metallic (copper) or optical fiber, and may be installed within or between buildings. Premises wiring may consist of horizontal wiring, vertical wiring, and backbone cabling. It may extend from the point-of-entry to user work areas. Any type of telecommunications or data wiring is considered premises wiring, including telephone, computer/data, intercom, closed-circuit television. Premises networks are wired worldwide, across every industry, in both small and large-scale applications. Any type or number of topologies may be used – star, bus, ring, etc. In 1989, the United States Federal Communications Commission (FCC) deregulated charges for maintaining at home inside wiring; the corresponding monthly charge was dropped January 1990.

Ownership The ownership of on-premises wiring varies between jurisdictions: It depends on the location of the demarcation point. The location determines ownership and responsibility for maintenance and repair. In the United States and Canada, most premises wiring is owned by the customer. There generally is a demarcation point "as close to the poles" as possible. For many installations, this is a network interface device mounted on the outside of the building. In some cases, it is a minimum-point-of-entry (MPOE) location inside the building. In the United Kingdom, the demarcation point is the wall jack, and hence most of the on-premises wiring is the property of the telephone company.

See also Customer-premises equipment Demarc extension Riser cable Structured cabling

References

This article incorporates public domain material from Federal Standard 1037C. General Services Administration. Archived from the original on January 22, 2022.

Worked examples

Example 1 — a first encounter with On-premises wiring

Start with the simplest possible case. Write down what On-premises wiring claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In science, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to On-premises wiring before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about On-premises wiring ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of On-premises wiring

In research: On-premises wiring appears in science research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses On-premises wiring in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: On-premises wiring is common in secondary-school and first-year university syllabi. It links to neighbouring topics Fiber to the premises, Local loop, Signal cables, so understanding it makes those chapters shorter.
In everyday life: Look for On-premises wiring outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study On-premises wiring in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what On-premises wiring means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain On-premises wiring out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is On-premises wiring in simple terms?

Why does On-premises wiring matter?

Because it connects several science ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study On-premises wiring?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on On-premises wiring.