2017 Master Electrician Ref. vs Electrical Design Residential

Master Electrician Reference (or MER for short) 2017 is your electronic pocket electrician reference guide. MER is for electrical designers, engineers, installers, contractors, facility managers, inspectors, exam candidates, apprentices, electricians, journeymen, architects, and technicians. MER is for people doing residential, industrial, and commercial work. Simply, if you are a Master Sparky or work with electricity in any way, this reference guide is for you! Have you ever lost pages or had damaged pages in your pocket electricians reference? The solution is here: Use MER to keep the most important information easily accessible on your iPhone, iPod Touch, or iPad. MER will even do calculations for you; something your old pocket reference book can't do. MER is divided into the following sections: * Simple Circuits - Ohm's law, series and parallel circuits, capacitance, inductance, impedance, and reactance. * Distributed Systems - Distribution wiring diagrams for 120, 208, 277, and 480 volts, color codes, breaker sizes, light switches and bells diagrams. * Electrical Formulas - Formulas for kVA, kW, and HP. * Color Codes - Color codes for capacitors and resistors. * Motors and Wiring - Standard motor and motor starter sizes, tables of full-load currents, locked-rotor information, overload units, OCPD, nameplate information, synchronous motor speeds, three-phase STAR and DELTA diagrams, three-wire start-stop diagram, motor frame dimensions, and motor enclosure types. * Transformers - KVA ratings for single- and three-phase current, transformer formulas. * Conductor Properties - Conductor tables, AWG and metric wire sizes, twist-on pressure connectors, and wire combinations. * Ampacities - Ampacities in raceway, cable, earth, and free air, and derating tables. * Conduit Fill table * Grounding Sizes - Equipment grounding conductor (EGC) and grounding electrode conductor (GEC). * Metal Boxes - Images and sizes of metal boxes, junction / device boxes, junction / pull boxes. * Voltage Drop calculations * Dictionary of electrician terms * Insulation Charts - Table of cable and wire types * Electrical Symbols * NEMA - Plugs and wiring diagrams, enclosure types, standard underground boxes, standard fuse and breaker sizes, standard pull box / junction sizes, standard gutter and wire-ways, standard switchboards, standard busway, standard busbar ampacity, standard panelboard sizes, and standard disconnect sizes. * Math and Conversions - Formulas for algebra, geometry, fractions, temperature conversion, trig tables, unit conversions, metric prefixes, and conversions between inches and millimeters. * Conduit Bending - Includes the guide "The Master Bender Way" on how to bend conduit. See the Master Bender app or MasterBender.com website for more information. * Conduit Weights * Copper Wire Cost * Hole Saw Sizes * Material Raceway Support * Lighting - Fluorescent, high-intensity discharge, incandescent, LED, and low-pressure sodium. * Standard Tool List * Torque - Lugs, bolts, and screws, tightening torque. * Dry, Damp, and Wet Locations * Hazardous Locations * Wiring Methods * Safety - Lock-out / tag-out (LOTO), and a safety manual and first aid. Most pages contain a general scientific calculator. It is expression based: Just enter an expression and evaluate it. It understands trig and power functions, can convert between radians and degrees, and has built-in basic constants like pi and e. MER includes key NEC tables from the National Electrical Code (NEC) 2017. We also have MER apps available for NEC 2011 and NEC 2014 code years. Visit our website at MasterSparky.com for more information.

This app is a complete residential electrical design toolkit for electricians, electrical contractors, engineers, and homeowners — built around NEC 2023 Article 220 (Standard Method). Version 2.0 brings three entirely new tools alongside the proven load calculator: a Dashboard home screen with a Quick Service Estimator, a full Wire Sizing Reference table, and a searchable NEC Code Reference Library covering 10 key articles. FOUR-STEP NEC LOAD CALCULATOR This app walks you through the full NEC Article 220 Standard Method calculation: Step 1 – House Information: enter living area, floors, garage, and basement Step 2 – Room Configuration: set up bedrooms, kitchens, bathrooms, laundry, and more Step 3 – Appliances & Loads: add HVAC, range, dryer, EV charger, water heater, and any custom load Step 4 – Results: view service size, demand load, panel layout, circuit list, conductor sizing, and full load worksheet Calculations cover general lighting (3 VA/sq ft), small-appliance circuits, laundry circuits, demand factors (NEC 220.42), range demand (Table 220.55), dryer load (NEC 220.54), non-coincident HVAC loads (NEC 220.60), and fixed-appliance demand factors (NEC 220.53). Export a detailed PDF report directly from the results screen. DASHBOARD (NEW IN V2.0) This app now opens to a Dashboard home screen that is immediately useful without running a calculation. It includes a Quick Service Estimator — enter square footage and instantly see a rough service size — plus a rotating NEC tip card covering Articles 210 through 430, and a quick-reference list of the eight most common residential branch circuits with wire gauge and voltage. WIRE SIZING REFERENCE (NEW IN V2.0) A dedicated Wire Ref tab gives instant access to NEC Table 310.16 ampacity values for every gauge from 14 AWG through 500 kcmil, in both copper and aluminum, across all three temperature ratings (60°C, 75°C, 90°C). Also includes NEC Table 310.15(B)(1) temperature correction factors, conductor bundling derating from Table 310.15(C)(1), and minimum conduit sizing guidance from NEC Annex C. Fully searchable by gauge or application. NEC CODE REFERENCE LIBRARY (NEW IN V2.0) A searchable, expandable library of 10 essential NEC articles for residential work: Articles 210, 220, 225, 230, 240, 250, 310, 314, 334, and 430. Each entry includes a plain-language summary and expandable key requirements pulled directly from the NEC. Filter by category or search across all articles and sections at once. PANEL LAYOUT & CONDUCTOR SIZING This app generates a complete branch circuit schedule, visual panel layout with breaker slot assignments, service entrance conductor sizing (copper and aluminum), neutral conductor sizing, grounding electrode conductor sizing per Table 250.66, and conduit size recommendations. For informational and educational purposes. Always verify designs with a licensed electrician and the authority having jurisdiction (AHJ).