Journal | Moein Sherafatmand https://moeinsherafatmand.ir/en/blog Building electrical, solar power and smart home systems en Thu, 02 Jul 2026 12:00:00 GMT Telling a good electrician from a cheap one https://moeinsherafatmand.ir/en/blog/choosing-an-electrician-in-gilan https://moeinsherafatmand.ir/en/blog/choosing-an-electrician-in-gilan Seven questions to ask before handing over an electrical job, and the signals that should worry you. Client guide Moein Sherafatmand Thu, 02 Jul 2026 12:00:00 GMT Your RCD keeps tripping: the causes, and the one thing not to do https://moeinsherafatmand.ir/en/blog/why-your-rcd-keeps-tripping https://moeinsherafatmand.ir/en/blog/why-your-rcd-keeps-tripping Why an RCD trips, how to narrow it down to one circuit yourself, and why bypassing it is the most dangerous thing you can do. Building electrical Moein Sherafatmand Thu, 14 May 2026 12:00:00 GMT CCTV that is actually any use https://moeinsherafatmand.ir/en/blog/cctv-that-actually-helps https://moeinsherafatmand.ir/en/blog/cctv-that-actually-helps Why most camera systems produce nothing usable on the day it matters, and the six decisions that change that. CCTV Moein Sherafatmand Tue, 09 Sep 2025 12:00:00 GMT Wired or wireless? An honest comparison of KNX and Zigbee https://moeinsherafatmand.ir/en/blog/knx-vs-wireless-smart-home https://moeinsherafatmand.ir/en/blog/knx-vs-wireless-smart-home Which automation approach suits your house: cost, reliability, installation and lifespan compared, without brand loyalty. Smart home Moein Sherafatmand Tue, 03 Jun 2025 12:00:00 GMT How to size a home solar system properly https://moeinsherafatmand.ir/en/blog/sizing-a-home-solar-system https://moeinsherafatmand.ir/en/blog/sizing-a-home-solar-system A practical guide to sizing a solar array from your own bills rather than a sales pitch, with a worked example and notes for the Gilan climate. Solar Moein Sherafatmand Sat, 12 Apr 2025 12:00:00 GMT