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Solar Inspections by Drew Johnson and John Dalton Burnham Energy, Inc. Introduction Background Burnham’s Role Inspection Methodology Dirty Dozen Burnham’s Services. Introduction.
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Solar Inspections • by • Drew Johnson and John Dalton • Burnham Energy, Inc.
Introduction Background Burnham’s Role Inspection Methodology Dirty Dozen Burnham’s Services
Introduction • Burnham Energy, Inc. is a subsidiary of Burnham Nationwide, the nation’s premier permitting, code compliance and sustainability consulting services company. • 3,000 cities across the United States • Fortune 500 companies • 20 years of experience • 100,000 permits nationwide • Burnham Energy, Inc. focuses primarily on providing solar services, particularly PV inspection services. • Inspected in over 25 states • Network of 20+ inspectors • 3,000+ inspections • NABCEP certified or equivalent
Burnham Inspection Methodology • Our inspectors are trained to look at an • entire system and document all aspects • of the system. • We have an in-house staff that reviews • the inspections and makes additional • commentary ensuring that NEC • guidelines are met and manufactures • specifications have been followed • Once all of the documentation is • reviewed reports are produced • accompanied by any other data • pertinent to the system. • Link to report example: Click here • Inspect components on the roof: • Modules • Racking • Stand off • Flashing • Wire Management • Grounding • Junction Boxes • Conduit • Roof Condition/Damages • Inspect components at ground level: • Main Service Panel • Wire Sizing • Breaker Size • Interconnection • Monitoring System • Inverter • Disconnects
Solar Dirty Dozen • Burnham conducted a study – Sample size of 100 reports • 2010 released our first issued of Solar Dirty Dozen • 2014 Part 2 of Solar Dirty Dozen released • Findings: • Same issues • No improvement with quality.
Solar Dirty Dozen • 1. Manufacturer’s specifications violations • 2. Shared raceways with high and low voltage wires • 3. In appropriate roofing methodology use for attachments and penetrations • 4. Poor wire management; resulting in “hangers,” pinched wires and unprotected conductors • 5. Improper grounding methods • 6. Inappropriate use of wire nuts • 7. Incorrect installation and/or inappropriate installation of a junction box • 8. Non-compliance with NEC Code 705.12 Point of Connection that addresses the Opposite End Rule (NEC Code 705.12(D)(2)) and the 100% Rule Violation (NEC Code 705.12(D)(2)) • 9. Conduit not properly supported or attached • 10. Incorrect installation of an end clamp and/or mid clamp • 11. Incorrect labeling of wire and color coding • 12. Warning Labels and Signage
Solar Dirty Dozen 100% Center Fed Violation Exposed Conductors
Solar Dirty Dozen Mid Clamp installed incorrectly End Clamp installed incorrectly
Solar Dirty Dozen Opposite End Rule Improper flashing
Solar Dirty Dozen L3, used for 208v 3 phase, of an Enphase trunk cable incorrectly installed to a neutral on a 240v system
Solar Dirty Dozen Main breaker severely downsized. Floating box.
Services • Inspection Services • QA Inspection • Vetting Inspection • Compliance Inspection • BurnhamEYE inspection Application • System documentation • Quality Review • Permitting Services
Contact Information & Resources • John Dalton • 408-418-1880 • jdalton@burnhamnationwide.com • Drew Johnson • 408-418-1839 • djohnson@burnhamnationwide.com • Lyleen Dauz • 408-418-1883 • ldauz@burnhamnationwide.com • Resources: • Brooks Engineering • www.brooksolar.com • John Wiles • New Mexico, Southwest Technology Dev. • Institute • www.nmsu.edu • International Renewable Energy Council • www.irecusa.org • North American Board of Certified Energy • Practitioners (NABCEP) • www.nabcep.org • National Electrical Code