What is an electrical load calculation?
A load calculation reviews the electrical demand of a property based on existing and planned equipment, occupancy, building use, and applicable code methods. It helps guide service size, panel planning, utility coordination, and safe equipment selection.
- Existing connected loads
- Planned future loads
- Code-aware demand factors
- Service and panel planning
Why square footage alone is not enough
Square footage does not show electric ranges, EV chargers, heat pumps, dryers, tenant equipment, commercial kitchens, or future renovations. A real load review must consider actual and planned loads.
- Equipment matters
- Usage matters
- Future improvements matter
- Building type matters
Existing loads vs planned future loads
Service planning should include what is installed now and what the owner intends to add later. This helps avoid undersized work and unnecessary repeat upgrades.
- Current panels and circuits
- Appliance and HVAC schedules
- EV chargers
- Commercial or tenant loads
EV chargers, heat pumps and mini-splits
Electrification loads can change the service calculation. Not every EV charger or heat pump requires a service upgrade, but the existing capacity must be reviewed before installation.
- Charger rating and use pattern
- Heat pump and mini-split load
- Load management possibilities
- Future expansion
Electric ranges, dryers and kitchen equipment
Kitchen and laundry equipment can add significant load. Renovation planning should review service capacity before equipment purchases or final design decisions.
- Electric cooking
- Dryers and laundry rooms
- Basement or accessory kitchens
- Commercial kitchen equipment
Residential load calculations
Residential load calculations support service upgrade, panel, renovation, EV charger, and heat pump planning for NYC homes, brownstones, row houses, condos, and multifamily dwelling units.
- Dwelling unit loads
- Appliance and HVAC loads
- Renovation planning
- Future electrification
Commercial load calculations
Commercial spaces may need equipment schedules, tenant plans, refrigeration, HVAC, lighting, kitchen equipment, or production equipment reviewed before a service upgrade recommendation is made.
- Restaurant and retail equipment
- Office and warehouse loads
- Tenant improvement plans
- Mixed-use building needs
How load calculations affect service size
The load calculation informs whether existing service can remain, whether a panel correction is enough, or whether a service upgrade should be considered. It does not replace field verification or utility review.
- Panel planning
- Service size recommendation
- Utility coordination support
- Future capacity planning
Why guessing service size is unsafe
Guessing can lead to undersized equipment, unnecessary work, failed inspection, capacity problems, or unsafe conditions. LED Electricians does not recommend 200 amp or 400 amp service without checking the load and field conditions.
- No square-footage guessing
- No universal service size recommendation
- No approval promises
- Licensed contractor review required
Trust proof for NYC service upgrade work
- Licensed and insured NYC electrical contractor
- General liability and workers compensation coverage where applicable
- DOB permit filing experience
- Con Edison coordination experience
- Property management and commercial electrical experience
- Emergency electrical service availability
- Real project photos and before/after equipment review can be provided where available
What We Check Before Recommending a Service Upgrade
Every NYC property has different field conditions. LED Electricians reviews the electrical system before recommending a service size or equipment scope.
- Existing service amperage
- Existing panel condition
- Meter pan condition
- Service entrance conductors
- Grounding and bonding
- Main disconnect condition
- Planned future electrical loads
- Existing DOB or electrical violations
- Con Edison service availability
- DOB permit requirements
- Space for new equipment
- Tenant or business downtime concerns
- EV charger or HVAC plans
- Commercial equipment loads
What We Do Not Guess
Service work affects safety, utility coordination, permits, inspections, and future property use. We do not shortcut the review process.
- We do not guess service size from square footage alone.
- We do not promise Con Edison approval before review.
- We do not promise DOB approval before filing and inspection.
- We do not recommend 200 amp or 400 amp service without checking the load.
- We do not treat meter or service equipment like a simple panel swap.
- We do not ignore grounding and bonding.
- We do not reuse damaged, corroded, unsafe or undersized equipment where replacement is required.
- We do not perform unsafe shortcuts to avoid permits or utility coordination.
Our NYC Service Upgrade Process
- Site assessment
- Existing service review
- Load calculation
- Scope recommendation
- DOB electrical filing where required
- Con Edison coordination where required
- Equipment installation
- Grounding and bonding verification
- Inspection
- Final closeout
Code and utility context
This page reflects general planning considerations from NYC DOB electrical filing workflows, the 2025 NYC Electrical Code, NEC / NFPA 70 as adopted and amended by NYC, Con Edison Electric Blue Book requirements, and Con Edison Project Center or Work Request coordination. Requirements must be confirmed for the specific property and scope.
Electrical Load Calculation NYC FAQs
Do I need a load calculation for an EV charger?
The existing panel and service capacity should be reviewed before installing EV charging equipment.
Can a load calculation prove I need 200 amp service?
It can support service-size planning, but field conditions and utility requirements also matter.
Is commercial load calculation different from residential?
Yes. Commercial equipment, occupancy, usage, and demand patterns can be different.
Can I use an online calculator instead?
Online tools can be educational, but they do not replace licensed contractor review for a real project.
Does load calculation guarantee DOB or utility approval?
No. DOB and utility review are separate steps where applicable.
Request a service upgrade estimate from LED Electricians
Call 646-836-2735 or send the property address, building type, current service size if known, planned electrical loads, and any DOB or Con Edison documents. We serve Brooklyn, Queens, Manhattan, the Bronx, and Staten Island.
Do not perform unpermitted or unsafe service work. If there are downed wires, smoke, fire, burning smell, shock hazard, or immediate danger, call 911 and/or Con Edison emergency service first.