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Like Tricable systems, Aerial Trams are supported by two track ropes and a third rope is used for propulsion. 2010: 3D televisions start hitting the market, spurred by popular 3D blockbusters like Avatar. There are some additional maintenance costs associated with the electrical equipment around the track, such as power sub-stations and the catenary wire itself, but, if there is sufficient traffic, the reduced track and especially the lower engine maintenance and running costs exceed the costs of this maintenance significantly. The faster acceleration clears lines more quickly to run more trains on the track in urban rail uses. Another aspect that can raise the cost of electrification are the alterations or upgrades to railway signalling needed for new traffic characteristics, and to protect signalling circuitry and track circuits from interference by traction current. This is mostly an issue for long-distance trips, but many lines come to be dominated by through traffic from long-haul freight trains (usually running coal, ore, or containers to or from ports).

Some electrifications have subsequently been removed because of the through traffic to non-electrified lines. Appearance: the overhead line structures and cabling can have a significant landscape impact compared with a non-electrified or third rail electrified line that has only occasional signalling equipment above ground level. These duties include the use of ropes, knots, and lifting equipment. Electrification typically requires line closures while new equipment is being installed. Electrification cost: electrification requires an entire new infrastructure to be built around the existing tracks at a significant cost. If the entire network is electrified, diesel infrastructure such as fueling stations, maintenance yards and indeed the diesel locomotive fleet can be retired or put to other uses - this is often the business case in favor of electrifying the last few lines in a network where otherwise costs would be too high. The overhead wires make the service "visible" even in no bus is running and the existence of the infrastructure gives some long-term expectations of the line being in operation. In 2014, progress is being made in the use of large capacitors to power electric vehicles between stations, and so avoid the need for overhead wires between those stations. Large fossil fuel power stations operate at high efficiency, and can be used for district heating or to produce district cooling, leading to a higher total efficiency.

Network effects are a large factor with electrification. As of 2023, the Swiss rail network is the largest fully electrified network in the world and one of only eleven countries or territories to achieve this, as listed in List of countries by rail transport network size. Fiber owned by CATV companies is usually lashed to the same strand that supports the coaxial trunk cable; at this particular pole, the fiber bypasses the amplifier to feed other portions of the network. The secondary distribution wiring appears to be a duplex bundle in which the MGN serves as both neutral and mechanical supporting strand. 7-30 is a larger diameter connector, with an L-shaped neutral, while the 7-50 has an enlarged neutral pin, compared with the hot. The hot and neutral blades are angled at 45° from vertical and 90° to each other, unlike NEMA 10 devices (where the angles are 30° and 60° respectively), also the plug is slightly smaller than a NEMA 10 and larger than ordinary 5-15P plugs. NEMA L12 series devices are three-pole, three-wire, non-grounding devices for three-phase 480-volt devices. All NEMA 1 devices are two-wire non-grounding devices (hot-neutral) rated for 125 V maximum. NEMA 10s are classified as 125/250 V non-grounding (hot-hot-neutral), and were designed to be used in a manner that indirectly grounds the appliance frame to the neutral, which was common before the requirement of a separate safety ground was incorporated in the National Electrical Code.

The dimensional standard for electrical connectors is ANSI/NEMA WD-6 and is available from the NEMA website. In Europe, this is the standard plug, which is a triple phase design. Some Wylex standard models were made with an RCD instead of the main switch, but (for consumer units supplying the entire installation) this is no longer compliant with the wiring regulations as alarm systems should not be RCD-protected. The damage is often not limited to the supply to one track, but extends to those for adjacent tracks as well, causing the entire route to be blocked for a considerable time. Additional protection such as NM cable inside raceway is needed if the installation method is subjected to physical damage as determined by the authority having jurisdiction. However, an AHJ, under the National Electrical Code provisions, has the authority to deny approval for even listed and labeled products. However, this limitation is being overcome by railways in India, China and African countries by laying new tracks with increased catenary height. However, due to ventilation issues, diesel trains may have to be banned from certain tunnels and underground train stations mitigating the advantage of diesel trains somewhat. Electric locomotives may easily be constructed with greater power output than most diesel locomotives.

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