Where the Box Goes: Internal Wiring Decisions That Last Years
Installation and equipment

Where the Box Goes: Internal Wiring Decisions That Last Years

8 min readJun 6, 2026

The engineer asks where the router should go, and the household says by the television, because that is where the old one was. Two years later, every device that matters is in a room at the other end of the house, and the Wi-Fi reaches it through three walls and a chimney breast.

Internal wiring is decided in five minutes and lived with for years. A little preparation before the visit produces a layout that suits how the household actually uses the connection rather than where the old equipment happened to sit.

What determines where the box can go?

The entry point, which is fixed by the network, and the cable run, which is not. The termination box goes where the cable enters, and the router can be placed elsewhere if a cable or a suitable link connects the two. That distinction is the key to the whole decision.

Households often conflate the two and accept the router beside the entry point. Where the entry point is a hallway cupboard, that is the worst possible position.

Why does the router’s position matter so much?

Because radio coverage is determined by distance and obstruction, and a metre matters more than a plan tier. A router in a central hallway at chest height serves a house better than one in a corner behind a television, regardless of the hardware.

Moving a router two metres can change the experience more than doubling the broadband speed. It is the cheapest improvement available and the one most often skipped.

Should a cable be run to a better position?

Yes, where it is possible. A length of ethernet from the termination box to a central position gives the router a good location and keeps the fiber unit where the network put it. The cable is cheap and the benefit is immediate.

Running it during the install is easier than afterwards, because the engineer is already drilling. Asking for a longer run may be chargeable, and it is usually worth the charge.

What about a cupboard?

A cupboard is the worst place for a router and a common place for a termination box. The compromise is to keep the box in the cupboard and run a cable out to a router elsewhere, leaving the cupboard door for the fiber unit alone.

If the box must serve as the router position, a cupboard with a vented door and no metal shelving is the least bad option. Wireless in a metal enclosure is close to no wireless at all.

How many ethernet points are worth having?

Two or three, in the places where a device stays put: a television, a desk, and a mesh node. Wired connections for fixed devices free the wireless spectrum for the devices that move, which improves everything else without any change to the plan.

Running them during the install is the cheapest moment. Afterwards, it is a small renovation project with a drill and a lot of dust.

Does cable quality matter?

For a domestic run, modestly. The category of the cable determines the maximum speed it can carry, and older cable in a wall may cap a modern connection. New cable should be current-generation, which is inexpensive.

The more common problem is the connector rather than the cable. A poorly terminated plug produces intermittent faults that are maddening to diagnose and cheap to fix.

Can the entry point be moved?

Sometimes, at a cost, and the cost is usually significant because it involves the external cable. Where the existing entry is in an awkward place, a conversation during the survey is far cheaper than a request afterwards.

Providers vary in flexibility. Some will agree a preferred entry point at order, and some will only follow the existing infrastructure. Asking at the point of ordering is the right moment.

What about a flat with a shared riser?

The entry point is wherever the riser reaches the flat, which may be a hallway or a cupboard near the front door. The same principle applies: keep the termination there and route a cable to a better position for the router.

A flat with a long, narrow plan benefits disproportionately from a wired node at the far end. Wireless alone often cannot cover it, whatever the router.

Is power a constraint?

Yes, and it is frequently forgotten. The termination unit and the router both need sockets, and a hallway with one socket used by a lamp is a problem. Asking for a socket to be added is outside the engineer’s scope, and the household needs a plan.

A short extension is the usual solution and it is worth having one ready on the day. The alternative is a router on the floor, which is worse for coverage.

How should the decision be made before the visit?

Walk the property and identify where the devices are: the desk, the television, the bedroom where calls happen. Then pick a position that is central to those and near a socket. Then decide whether a cable is needed to reach it.

Ten minutes with a floor plan produces a better decision than five minutes with an engineer at the door. The engineer can advise, and only the household knows how the rooms are used.

Does the decision affect cooling and ventilation?

Marginally, and more than people expect. Equipment in a closed cupboard runs hot, which shortens its life and can reduce performance. A ventilated position is better, particularly for a router doing routing work for a fast line.

Where the only option is a cupboard, leaving the door off or fitting a vent is worth doing. Heat is a quiet cause of intermittent faults.

What about the television position?

It is often where the old router was, because the old router served a set-top box. With streaming, the television needs a good connection, and a wired point is the most reliable way to provide one, leaving the wireless for phones and laptops.

Putting the router beside the television is a habit rather than a requirement. A cable to the television and a router in the hallway is usually the better arrangement.

Can the cable be hidden?

Usually, with trunking, or by running it under a floor or along a skirting. A visible cable is a cosmetic problem, and trunking solves it for a small cost. Internal walls make the job easier than solid external ones.

Agreeing the route with the engineer before the drilling starts prevents a cable across a doorway. It is a two-minute conversation with a permanent result.

What if the household rents?

Then internal alterations need consent, and the safest approach is the least invasive: use an existing entry point, run cable along skirting with trunking, and avoid drilling new holes. The deposit is a real consideration.

A removable trunking solution is a reasonable compromise between a neat installation and a landlord’s wall. It is also something a tenant can take down at the end of a tenancy.

Does the internal layout affect the plan choice?

Sometimes, and in one direction: a large or awkward property may need a lower tier and better distribution rather than a higher tier and one central router. A plan is only as good as the network inside the house.

That reframing is useful for households considering an upgrade. Fixing distribution often delivers more than adding capacity, and it costs less.

What should be written down on the day?

Where the box is, where the cable runs, what was drilled and what was tested. A photograph of the finished work and a note of the measured speed is enough, and it takes a minute.

That record is useful in two years when something changes and nobody remembers how the house was wired. It is also useful at the end of a tenancy.

What is the single best decision?

Separate the termination point from the router position, and put the router where the household lives rather than where the cable enters. That one distinction avoids the most common and most expensive regret in home networking.

Everything else is a detail. This is the decision that determines whether the connection feels fast in the rooms that matter.

How should the position be tested after the visit?

Walk the property with a phone and check the signal in each room, then test throughput in the two worst spots. That five-minute survey either confirms the decision or reveals a room that needs a cable before the household settles in.

Doing it on the day is easier than afterwards, because the engineer is still on site and can adjust a run. A week later, the same adjustment is a new appointment.

Five minutes of drilling decides two years of coverage, and the choice is usually made by default. Where would you put the router if you were starting from an empty house?