Residential Dedicated Equipment Circuits in Altadena

Yes. The Los Angeles County Department of Public Works, Building and Safety Division, requires electrical permits for new dedicated circuits, including those for workshop tools, kilns, EV chargers, and appliances. Processing typically takes 2-4 weeks including any plan review and permit issuance. We handle all permit applications, respond to reviewer questions, and schedule the final inspection with LA County inspectors.

It depends on your total calculated load. We perform a detailed NEC Article 220 load calculation to determine available capacity. In many cases, we can add specific high-priority circuits or recommend a service upgrade to 200A. Older panels with obsolete or recalled breaker types (Zinsco, Federal Pacific, Pushmatic) may need replacement for safety, code compliance, and compatibility with modern protective devices. We’ll provide a clear cost comparison and timeline before proceeding.

We calculate voltage drop per NEC guidelines and upsize conductors as needed to maintain proper voltage at the load—critical for motor performance and tool operation. For detached structures, we typically run a subpanel feed (often 60A-100A) with proper grounding and bonding, then distribute individual circuits locally. We use RMC or EMT for exposed runs, trench and protect underground conduit properly, and coordinate with your landscaping or hardscape to minimize disruption.

High-load equipment requires careful circuit design. Kilns often need 240V circuits sized to nameplate ratings (commonly 30A-50A), with appropriate receptacles or hardwire connections and nearby disconnects. Welders may have high inrush current requiring specific breaker types. We review manufacturer installation instructions, calculate conductor sizing including demand factors, and ensure proper protection. For any equipment with sustained high loads, we verify panel bus ratings and consider dedicated subpanels if multiple heavy loads are planned.