Overhead vs Underground Service: Drop, Lateral and Meter

What separates a pole drop from a buried lateral, where ownership splits, what a conversion involves, and how each behaves in a New York storm.

Overhead vs Underground Service: Drop, Lateral and Meter

The service is the last stretch of the grid: the conductors that leave the
utility’s distribution line and arrive at your meter. In New York it comes
one of two ways. An overhead service is a drop from a pole to a mast on the
house. An underground service is a lateral from a pole riser or a
pad-mounted transformer, through a buried conduit, to the meter base. Most
homes got whichever the street had when they were built and never think
about it again, until a heat pump or an EV charger prompts a service upgrade,
a storm takes the drop down, or a tree grows into it. Then the difference
becomes a decision.

What Each One Is Made Of

An overhead service starts at the pole, where the utility’s conductors
leave the transformer. The drop runs through the air to a point of
attachment on the house, then through a weatherhead into a mast or conduit,
and down as service entrance conductors to the meter socket. From the meter
it continues to the main panel. The drop is the utility’s; the mast, the
weatherhead, the entrance conductors and the socket are generally the
homeowner’s, though where the line of ownership sits is written in each
utility’s own service requirements book rather than in any statewide
rule.

An underground service starts at either a riser on a pole, where the
utility’s conductors come down the pole into a conduit, or at a pad-mounted
transformer on the ground. From there a lateral runs through buried conduit
to the house, up into the meter base, and on to the panel. Who owns the
lateral conductors, who supplies the conduit, and who digs the trench varies
by utility and by whether the street is already served underground. In a
subdivision built with underground distribution the lateral is usually the
utility’s; where a single house converts on an overhead street, the homeowner
commonly provides the trench and the conduit to the utility’s specification
and the utility pulls or supplies the conductor. Ask before assuming.

Ice, Wind, Trees and Water

The case for underground is a New York winter. An overhead drop carries
ice, catches wind, and lives under whatever trees line the street. An ice
storm that brings down limbs takes drops with it, and a drop torn off the
house often takes the mast and the meter socket too, which turns a utility
repair into a homeowner’s electrical job before power can be restored. The
ice storm outage that stops a rooftop solar array is
the same event; the array cannot run without the grid to lean on, and the
drop is where the grid most often breaks.

The case for overhead is repair. A failed drop is visible from the street
and replaced in an hour from a bucket truck. A failed lateral has to be
located and dug, and a lateral that was direct-buried decades ago rather
than run in conduit means a trench across the lawn or the driveway, for the
same reasons that apply to any buried run on the
customer side.

Water is the third factor, and it cuts the other way from ice. On the
South Shore of Long Island, in the Rockaways, along the Hudson in flood-prone
stretches, underground service equipment sits at or below the level a storm
surge reaches. A flooded meter base or a submerged pad transformer is out of
service until it dries or is replaced, and a house in a mapped flood zone
should treat the elevation of the meter and the transformer as part of the
overhead-versus-underground question, not an afterthought.

Converting Overhead to Underground

A conversion is a homeowner-initiated project, and in the ordinary case
the homeowner pays for the work on the property. The sequence is fairly
fixed across New York’s utilities:

1. Application to the utility. The utility confirms it can
   serve the address underground, identifies where the lateral will originate,
   and issues its specification: trench depth, conduit size and type, bend
   radius, pull rope, where the conduit surfaces at the pole or transformer,
   and where the meter base has to be.
2. Trench and conduit. Dug to the utility’s spec, which is
   often deeper and larger than what the electrical code asks of a customer-side
   run, because the utility expects to pull its own conductor through it for
   decades. Dig Safely New York is notified first, as it is for any
   excavation.
3. The new meter position. An underground service arrives
   low, so the meter base usually moves or is replaced, which is the job the
   meter socket article describes. The service entrance
   conductors from the base to the panel are sized the same way as any
   service entrance cable, and the cable type changes
   because an underground service uses a different construction from the
   overhead entrance cable it replaces.
4. Inspection, then cutover. The customer-side work is
   inspected under whichever code path the address falls under. Then the
   utility schedules a planned outage, disconnects the drop, energises the
   lateral, and removes the old attachment and mast.

The conversion pays off in a way that has nothing to do with the service
itself: it is the moment the mast, the weatherhead and the old drop’s
attachment come off the house, which frees a roof face for solar or removes
the clearance problem a new deck or pool was going to have with the drop.

When the Service Upgrade Forces the Question

Most homeowners meet this decision inside a different one. A heat pump, a
heat pump water heater, an EV charger and an induction range together can
push a house past what its existing service delivers, and
a panel upgrade that raises the service size touches
everything from the panel back to the pole. On an overhead service the
utility may need to replace the drop with heavier conductors, which is its
side of the job, while the mast and the entrance conductors are yours. On an
underground service the question is whether the existing conduit is big
enough for the larger lateral. If it was sized to the old service with no
margin, the upgrade may mean a new trench, which is the argument for spare
capacity that every buried run shares.

That is the point at which a conversion is worth pricing alongside the
upgrade rather than after it. The mast is coming down or being rebuilt
anyway, the meter base is being replaced anyway, and the inspection is
happening anyway. Doing the trench in the same season means the house is
opened up once. The wider case for the panel
upgrade already includes the service; whether that service stays in the
air is a question to settle in the same conversation.

Solar, Storage and the Service Type

Neither service type prevents solar or a battery. What changes is the
mechanics of interconnection. The utility’s disconnect and the production
meter, where one is required, sit near the service meter, so their placement
follows the service. An overhead service with the mast on the roof face that
also happens to be the best solar exposure is a conflict the conversion
resolves. A second meter for EV charging, where a
utility offers that arrangement, is easier to add to a service that has room
for another base, which is a question of the meter position rather than of
overhead or underground as such.

Side by Side

Three Documents, Not One

Any question about the service in New York has three sources of rules,
and they do not overlap neatly. Outside the five boroughs the New York State
Uniform Code adopts a national electrical code edition and governs the
customer-side work, enforced by the local building department, often through
a third-party electrical inspector. Inside the city the NYC Electrical Code
is a separate document, enforced by the Department of Buildings. And every
utility, Con Edison, National Grid, NYSEG, RG&E, Central Hudson, Orange
and Rockland, PSEG Long Island, publishes its own service requirements,
which set the meter height, the conduit, the point of attachment and the
ownership split for its territory.

The utility’s book is the one homeowners never read, and it is the one
that decides the parts of this question that matter most: who digs, who
pulls, who pays for what, and where the meter goes. None of it says whether
a given installation is acceptable; it says what the inspector and the
utility’s service planner will each be looking at, and they will be looking
at different things.

Frequently Asked Questions

What is the difference between a service drop and a service lateral?

A drop is the overhead conductor from the pole to a point of attachment on the house, feeding a mast and weatherhead. A lateral is the underground conductor from a pole riser or a pad-mounted transformer, through buried conduit, into the meter base. Both end at the meter; they differ in everything before it.

Who owns the overhead service drop in New York?

In the ordinary case the utility owns the drop to the point of attachment, and the homeowner owns the mast, weatherhead, service entrance conductors and meter socket. The exact line is set by each utility’s own service requirements book, not by a statewide rule, so check the one for your territory.

Can I convert my overhead service to underground?

Usually, if the utility can serve the address underground. It is a homeowner-initiated project: an application, a trench and conduit dug to the utility’s specification, a new or relocated meter base, inspection of the customer side, and a planned outage for the cutover. Expect the cost of the work on the property to be yours.

Is underground service more reliable?

Against ice, wind and trees, yes; those are the usual causes of a New York outage at the drop. Against a fault in the conductor it is slower to repair, because it has to be located and dug. Against flooding it can be worse, if the meter base or transformer sits low in a surge zone.

Does a service upgrade for a heat pump change the drop?

It can. A larger service may need heavier drop conductors, which is the utility’s side of the job, while the mast and entrance conductors are yours. On an underground service the question is whether the existing conduit has room for the larger lateral; if not, a new trench is part of the upgrade.

Why do a conversion at the same time as a panel upgrade?

Because the mast, the meter base and the inspection are all being touched anyway. Pricing the trench into the same season opens the house up once, and the removal of the mast frees a roof face or clears a deck or pool that the drop would otherwise need clearance over.

Does overhead or underground service affect a solar installation?

Neither prevents it. The utility disconnect and any production meter sit near the service meter, so their placement follows the service. An overhead mast on the best solar roof face is the common conflict, and a conversion is one way to resolve it.

Which rules apply to the service, the code or the utility?

Both, and they cover different things. The code path for your address, the State Uniform Code outside New York City or the NYC Electrical Code inside it, governs the customer-side work. The utility’s service requirements book sets the meter height, the conduit, the attachment point and who owns what. Neither one alone answers the whole question.