San Jose Electrical Service

30-Day Load Study NEC 220.87

Verify real electrical demand before adding new loads, upgrading equipment or submitting for permit approval. HAXX performs 30-day load studies in San Jose to document actual service capacity and support cleaner project decisions without jumping straight to an unnecessary panel or service upgrade.

NEC 220.87 San Jose PG&E Support Permit-Focused

Real Usage Data We monitor actual demand over 30 days instead of relying only on theoretical connected-load calculations.

Permit Support The resulting report helps support submittals for added equipment, service changes and inspection-driven approvals.

Avoid Unneeded Upgrades In the right scenario, a load study can show enough remaining capacity and prevent avoidable upgrade costs.

Book Online

Submit your project details to request a 30-day load study in San Jose.

For projects involving EV chargers, HVAC upgrades, tenant improvements, added equipment or service-capacity review, submit your request directly here.

When It’s Needed

Projects that commonly trigger a load study.

A 30-day load study is most useful when a property owner, engineer, contractor, city reviewer or utility needs proof that existing service capacity can support new electrical demand.

Commercial

Buildings adding equipment

Useful for offices, retail, restaurants, warehouses and other facilities adding load to an existing electrical service.

Commercial kitchen equipment
Rooftop HVAC additions
Machinery and process loads

Large Residential

Homes with bigger service

Often relevant for larger homes, higher-amp residential services and properties where added loads need formal capacity review.

400A+ residential service
ADUs and expanded living space
Multi-load upgrade planning

Added Load

Electrification and upgrades

A strong fit when the next project adds meaningful electrical demand and capacity needs to be documented before moving forward.

EV charger installations
Heat pump and HVAC upgrades
Tenant improvements

Permit Review

Jurisdiction-driven requests

In many cases, the study is driven by city or utility review when they want hard demand data before approving work.

Permit application support
PG&E-related capacity review
Building department questions

What You Get

A technical service built around documentation, not guesswork.

This service is not just temporary monitoring. It is a permit-support and capacity-verification workflow that helps the project team understand what the service is truly carrying over time.

Capacity Decision

Why owners and contractors request it.

The central question is simple: can the existing service safely support the new equipment? A properly executed NEC 220.87 load study provides real demand data to answer that question more accurately.

San Jose Context

Prepared for permit and utility-facing review.

HAXX positions this service for local jurisdiction review, PG&E-related support and permit-driven projects where documentation quality matters as much as installation work.

Logger

Data logger installation

We identify monitoring points and install professional equipment to track amps, voltage and demand under real operating conditions.

30 Days

Continuous demand monitoring

The service records usage over a full 30-day period so the report reflects actual demand patterns instead of a one-time snapshot.

Report

NEC 220.87 documentation

After monitoring, the data is reviewed and organized into a report intended to support capacity verification and submittal needs.

Support

Permit and approval readiness

The report is designed to help owners, engineers and contractors communicate existing service capacity to local reviewers and utilities.

Process

How the load study is completed.

The workflow is straightforward: evaluate the site, install monitoring equipment, collect demand data, prepare the report and support the next approval step.

Site review

We review the service, panel or switchboard configuration and determine the right monitoring setup.

Logger setup

Certified monitoring equipment is installed to capture current demand and operating data over time.

Monitoring period

The system records real usage continuously over 30 days during normal building operation.

Report preparation

The collected demand data is analyzed and documented in a structured NEC 220.87 load study report.

Permit support

The finished report can then be used to support review by jurisdictions, utilities and project teams.

Why It Matters

The value is often in what you avoid.

A load study can prevent overloaded assumptions, rejected permit packages and oversized upgrade decisions when the actual service demand is lower than expected.

Before

Project team assumes a service upgrade is required.

A property is planning to add significant new equipment, and the city asks for proof that the existing service can handle the added load. Without real demand data, the default assumption may be that a larger panel or service upgrade is needed.

Higher Cost Risk Permit Delay Risk Capacity Unclear

After

The study documents remaining capacity and clarifies the path.

After 30 days of monitoring, the report shows actual peak demand and whether enough capacity remains for the new equipment. In the right case, that can support approval without forcing an unnecessary upgrade.

NEC 220.87 Support Permit-Ready Report No Unneeded Upgrade

FAQ

Common questions about 30-day load studies.

This service usually comes up when a project is already moving toward permit review, added load or capacity verification, so the main questions tend to be practical and project-specific.

What is a 30-day load study?

It is a documented monitoring period that measures actual electrical demand over 30 days using a data logger. The goal is to verify whether the existing service can safely support added equipment or additional circuits under NEC 220.87.

When is a load study required?

It is commonly requested when a project adds significant new load, when a city reviewer or utility wants proof of available capacity, or when a property owner wants to confirm whether an expensive service upgrade is truly necessary.

Is this only for commercial properties?

No. It is especially common on commercial projects, but it can also apply to larger residential properties, high-amp services, ADUs and homes adding meaningful new electrical loads.

Will power be interrupted during monitoring?

The service is positioned around accurate monitoring without normal operational downtime. The monitoring period is meant to capture real building demand while the property continues running as usual.

Can this help avoid a panel upgrade?

In the right scenario, yes. One of the main reasons to perform a load study is to determine whether the existing service already has enough remaining capacity, which can help avoid an unnecessary upgrade.

San Jose Service

Permit-focused electrical support.

HAXX presents this service as part of its higher-trust electrical scope: licensed C-10 contractor work, NEC-oriented documentation and support for jurisdiction- and utility-facing project needs.

Phone (408) 901-8315

Email support@haxxservice.com

Address 1462 Merry Ln San Jose, CA 95128

License LIC #1081990

Coverage San Jose and nearby Bay Area communities

Book Load Study Call Now