Re: [RE-wrenches] AFCI tripping on SB 4000US-12

Comment below - -- Martin Herzfeld, Interstate Renewable Energy Council (IREC) Certified Master Trainer™ Emeritus California Solar & Electrical Contractor License #00833782 C-46, C-10, C-7, C-61 - D-56, D-31 Solar, Electr

Re: [RE-wrenches] Cable Tray Marking

signal word. By the way, NEC 392.18(H) refers to 110.21(B). BTW, more information ANSI Z535 is found here: https://webstore.ansi.org/standards/nema/ansiz5352011r2017-1668874 All the best, Martin Herzfeld, Interstate Renewable Energy Council (IREC) Certified Master Trainer ™ for Photovoltai

Re: [RE-wrenches] IAEI Online Articles

FYI - I've been using the IAEI App found here: http://bit.ly/IAEIApp1 with access to past issues. All the best, Martin Herzfeld, Interstate Renewable Energy Council (IREC) Certified Master Trainer ™ for Photovoltaics (PV) Installation Professional #IREC 10037 Contract Training Provider

Re: [RE-wrenches] protecting wire below 8'

Simply, the '2.5 m' (8 ft) has been inferred from Article 110.27(A)(4). It's interesting now that the distance in the 2019 CEC/2017 NEC has increased based on voltage. In other words, if the voltage is greater than 301 volts the minimum would be 8 ft 6 in. :) All the best,

Re: [RE-wrenches] Rapid Shutdown Compliance

gt; shows accidents from gas explosions, falls, health problems and industrial > injuries. None of these incidents could have been prevented by module level > power electronics. This is typical of the data that I've seen so far. > --- > > > > On 2020-05-06 17:22, Marti

Re: [RE-wrenches] Rapid Shutdown Compliance

are the #1 reason for incidents in the construction industry. All the best, Martin Herzfeld, Interstate Renewable Energy Council (IREC) Certified Master Trainer ™ for Photovoltaics (PV) Installation Professional #IREC 10037 Contract Training Provider (CTP) Adjunct Professor, Energy California Solar

Re: [RE-wrenches] Rapid Shutdown Compliance

30KUS,SE33.3KUS, SE43.2KUS, SE66.6KUS and SE100KUS inverters)" https://www.solaredge.com/sites/default/files/string_sizing_na.pdf All the best, Martin Herzfeld, Interstate Renewable Energy Council (IREC) Certified Master Trainer ™ for Photovoltaics (PV) Installation Professional #IREC 10037 Contrac

Re: [RE-wrenches] Industry Publications

I'd suggest IAEI magazine found here: https://iaeimagazine.org/magazine/ All the best, Martin Herzfeld, Interstate Renewable Energy Council (IREC) Certified Master Trainer ™ for Photovoltaics (PV) Installation Professional #IREC 10037 Contract Training Provider (CTP) Adjunct Professor, E

Re: [RE-wrenches] Ground mount fire code clarifications

stance requirements determined by the local jurisdiction." 5. Gravel and the various types is also my goto soil amendment. In California, I'd also suggest working with a C27 Landscaping Contractor on what type of blue flowers would be okay. What do you think? All the best, Mart

Re: [RE-wrenches] Solar set backs

-environment-sacramento.html#meetingagenda All the best, Martin Herzfeld, Interstate Renewable Energy Council (IREC) Certified Master Trainer ™ for Photovoltaics (PV) Installation Professional #IREC 10037 https://www.youracclaim.com/badges/a54a49a9-31cb-4f52-b35f-9d7c90630bb9/public_url Adjunct Professor

Re: [RE-wrenches] NEC in PDF format not availaible for 2020

FYI Only - In California, the Codes are found here: https://www.dgs.ca.gov/BSC/Codes#@ViewBag.JumpTo All the best, Martin Herzfeld, Interstate Renewable Energy Council (IREC) Certified Master Trainer ™ for Photovoltaics (PV) Installation Professional #IREC 10037 Adjunct Professor, Energy

Re: [RE-wrenches] NEC 2020 not available as a portable PDF?

use only the portable "paper copy," I'd rather receive it for free with other IAEI member benefits. All the best, Martin Herzfeld, Interstate Renewable Energy Council (IREC) Certified Master Trainer ™ for Photovoltaics (PV) Installation Professional #IREC 10037 https://www.your

Re: [RE-wrenches] Good Tablets for the Solar Installer

converter equipment configuration, FLIR attachment for third party inspections, irradiance, quick augmented reality survey, online meeting, email and other things. I have a Suface as secondary, I do most everything needed and a lot less as well. All the best, Martin Herzfeld, Interstate Renewable

Re: [RE-wrenches] SolarEdge reliability declining...???

Would the inverter in an indoor or outdoor location be a factor in the failures? All the best, Martin Herzfeld, Interstate Renewable Energy Council (IREC) Certified Master Trainer ™ for Photovoltaics (PV) Installation Professional #IREC 10037 https://www.youracclaim.com/badges/a54a49a9-31cb

Re: [RE-wrenches] High altitude off-grid systems

one module manufacture "The installation place should be less than 1,000m (3280ft) above sea level." And higher altitude installations are allowed only if wind pressure is a factor. BTW, manufactures may not specifically follow NEC 90.9(B) and the dual system of units :) All the be

Re: [RE-wrenches] Ibew is working to exclude C-46 contractor’s from installing Batteries.

pplication/Experience_For_Exam.aspx 3. For example, I also have a C-7 (Instrumentation - Monitoring), D31(Pole Mounts) and D56 (Trenching - Ground-Mounts) In other words, bump cap, hard hat (helmet), or feather? Martin Herzfeld, Interstate Renewable Energy Council (IREC) Certified Master Tra

Re: [RE-wrenches] Covering modules

everything as if it were hot." Martin Herzfeld, Interstate Renewable Energy Council (IREC) Certified Master Trainer ™ for Photovoltaics (PV) Installation Professional #IREC 10037 https://www.youracclaim.com/badges/a54a49a9-31cb-4f52-b35f-9 d7c90630bb9/public_url Adjunct Professor California

Re: [RE-wrenches] Aquion Batteries

Has anyone worked with them with a Sunny Island? Space is not an issue for this client. Martin Herzfeld, IREC Certified Master Trainer ™ for PV Installation Professional #IREC 10037 California Solar Contractor License #00833782 C46, D56, D31, C-7 Solar, Trenching, Pole Installation

Re: [RE-wrenches] SMA 40 series DC disconnect

2014 NEC 690.18 is now removed in NEC 2017? Martin Herzfeld, IREC Certified Master Trainer ™ for PV Installation Professional #IREC 10037 Contract Training Provider (CTP) California Solar Contractor License #00833782 C46, D56, D31, C-7 Solar, Trenching, Pole Installation & Mainten

Re: [RE-wrenches] traveling with digital meters

itted with knitting needles. All the best, Martin Herzfeld, IREC Certified Master Trainer ™ for PV Installation Professional #IREC 10037 California Solar Contractor License #833782 C46, D56, D31, C-7 Solar, Trenching, Pole Installation & Maintenance, Instrumentation Roof & Ground Mounte

Re: [RE-wrenches] UL 1703 coming to California

FYI - Also additional information is here too ... : http://productspec.ul.com/ <http://productspec.ul.com/index.php> Martin Herzfeld California Solar Contractor License #833782 C46, C-7, D31, D56 Trenching Contractor, Pole Installation & Maintenance, Instrumentation UL Certified PV

Re: [RE-wrenches] PV panel backing

I concur with Dan. Unless a controlled environment, a patch job on a module with a customer is wrong on so many levels. Martin Herzfeld California Solar Contractor License #833782 Trenching Contractor, Pole Installation & Maintenance, Instrumentation UL Certified PV Installer #17, OSH

Re: [RE-wrenches] Rapid shutdown for pole mounts

In other words, for ground-mounts, in accordance with 2014 NEC 690.12(1), would it be okay to run the DC conductors not inside, but on the side of the building "5" feet directly to the inverter? Martin Herzfeld California Solar Contractors License #833782 Trenching Contractor, Pole In

Re: [RE-wrenches] CA Fire code

ions/reports/flammability-testing/index.html 4. Wildland Hazard/Building Codes http://www.fire.ca.gov/fire_prevention/fire_prevention_wildland_zones.php We'll check it out on an install, if in the area ... Martin Herzfeld California Contractor License #833782 UL Certified PV Installer #1

Re: [RE-wrenches] Advanced PV Training Recommendations

just that I prefer fusion > to fission. And it just so happens that there's an enormous fusion reactor > safely banked a few million miles from us. It delivers more than we could > ever use in just about 8 minutes. And it's wireless!" > > ~William McDonough > &

Re: [RE-wrenches] Advanced PV Training Recommendations

"But, as you all know, there are always more details to master, code issues to be clarified, and new technologies coming down the pike." 1. Specifically, not only practical safeguarding code issues, but also the I codes and standards, - CEC, CBC, ... there are courses with the ICC 2013 TriChapter

Re: [RE-wrenches] AHJ's & NABCEP

They are different. 1. The license distinguishes the qualified from the unqualified and the license qualifier is allowed to practice in the jurisdiction. A qualified person is also defined in NEC Article 100. The definition of AHJ may not be as many think as defined in NEC Article 100. 2. As an e