Guides
Guides 18/10/2026 INVENTĀRS
Distribution board bill of materials
The distribution board (consumer unit, fuse board) is where the whole installation meets: the incomer, protection, circuits, neutral and protective conductors. A specification error usually means one of three things: the enclosure is too small, an item is forgotten (busbar, N/PE terminals, surge protection), or the devices are not compatible. This guide helps you compile a complete bill of materials and check it before ordering. This is not a board design method. Protective device ratings, conductor sizes and selectivity are set by the designer. LBN 261-15 point 55: electrical installation is ..
Guides 18/10/2026 INVENTĀRS
Residual current protection under LBN 261-15
Residual current protection (RCD, RCCB, RCBO) is one of the few electrical installation topics where the Latvian building code is very specific. Amendments to LBN 261-15 came into force in July 2025, and many websites still carry old or simplified information. This guide covers three things: what the regulation requires, what standards and manufacturers recommend, and how to turn it into a list of devices. Important: this is information, not a design. Electrical installations are designed, installed and tested by certified specialists. We use three labels: LBN — mandatory requirement, standard..
Guides 05/10/2026 INVENTĀRS
Angle grinder for metal
Cutting metal, rust, welds — angle grinder. Overview: how to choose a sander. Scheppach. BC-AG125P-X SET S — brushless kit. BC-AG125P-X bare C-AG125-X Set L — with 4.0 Ah; compare the card, not only “125 mm”. Angle grinders · Sanding. PPE: glasses, gloves, PPE. Wood finishing → belt vs orbital. FAQ Is cordless enough for metal? For many DIY/short site jobs — yes within honest limits on the card. Before you buy Cutting/cleaning, 125 mm discs, kit vs bare, protection → angle grinders.
Guides 05/10/2026 INVENTĀRS
Work gloves by job type
Work gloves by risk. Eyes: safety glasses. Full kit: PPE. Delta Plus · hand protection · cut-resistant gloves. CT402 size 9, CT402 size 10, CT402 size 11 Nitrile-coated gloves Cut-resistant gloves, class 3 With grinders mind rotating tools — angle grinder for metal. Before you buy Risk → type → size → work gloves / cut-resistant.
Guides 05/10/2026 INVENTĀRS
Bits for wood, metal and concrete
How to choose bits · SDS vs cylindrical. IRWIN · bits · hole saws. Metal: HSS PRO 3.0 mm, HSS PRO 10.0 mm Large holes: BI-METAL 51 mm Concrete volume → rotary hammer / rotary hammers. Machine: cordless drill. Eyes: glasses. Before you buy Material → type → diameter → shank → bits.
Guides 05/10/2026 INVENTĀRS
Flood lights for the site
Flood lights when a headlamp is too narrow. Basics: work lighting. Compare: headlamp vs work light. Cordless on site Rapid The Portable (Rapid) — built-in battery: 1000 lm, 100/50 %, ~3 h, USB-C, stand tilts 180°, IP65. EMOS COB floodlight — 600/300 lm, 3000 mAh, power bank, IP44. DeWalt DCL043-XJ (DeWalt) — 18 V platform, 120–1000 lm, ~10 h; battery and charger not included; not Scheppach/Worx 20 V. Painting and finishing Rapid The Painter — 2000 lm, 6000 K, frosted glass, IP65; Rapid The Painter+ — 5000 lm, 50 W, IP65. Both fit a tripod (not included); check the power source on the card. A..
Guides 04/10/2026 INVENTĀRS
230 V or 400 V generator?
Many buyers think 400 V is “more powerful and therefore better”. But it is not a question of power; it is a question of voltage and number of phases. If you have no three-phase load, a 400 V output can be an unnecessary complication — and sometimes a misleading number on the box. The main guide: how to choose a generator. Here — one question: 230 V or 400 V. Range: Generators, brand Scheppach. Check prices and availability on the card. 230 V and 400 V in plain terms 230 V (single phase). This is the same voltage as in ordinary home sockets. Most appliances run on it: lighting, fridge, kettle,..
Guides 04/10/2026 INVENTĀRS
Inverter generator — when do you need one?
If you are buying a generator to keep home electronics running — a computer, router, boiler controls, chargers — sooner or later you will run into the word “inverter”. For some it is a must, for others an unnecessary extra. This article helps you see which one you are. The basic logic: how to choose a generator. Range: Generators, brand Scheppach. What is different about an inverter generator In a conventional (AVR) generator the engine turns the alternator at a speed that sets the AC frequency. In an inverter generator the current is converted electronically, so the output voltage is usually..
Guides 04/10/2026 INVENTĀRS
How to calculate generator power?
“How many kilowatts do I need?” — the question we hear most often. The answer is not one universal number. You can calculate it in a few steps if you know what you will connect to the generator and how those appliances behave at start-up. This article supplements the main guide how to choose a generator. We do not promise specific appliance wattages here: they depend on model, age and mode. Always check the label on the appliance or its manual. Which appliances belong in a home backup kit is a different page — generator for home. This page is only the method for adding up a load you have alrea..
Guides 04/10/2026 INVENTĀRS
Compressor bar, l/min, W and tank
A compressor card almost always shows four big numbers: bar, l/min, W (or kW) and tank litres. People mash them into one pile: “bigger is better”. They are not the same measurement — and mixing them up is why people buy the wrong unit. Choice basics: how to choose. Range: Compressors. Bar — pressure, not “power” Max bar is how far you may fill the tank. Tools run at working pressure, often below max. Extra bar without flow does not make a gun stronger. l/min — air over time Intake — often the larger catalogue number. Delivery / FAD at a stated bar — what the tool actually breathes...