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Pipe N Wire vs 2017 Master Electrician Ref. Usage & Stats
From the creator of iBend Pipe — trusted by pros for over a decade.
PipeNWire is your fast, reliable, and NEC-compliant conduit fill calculator, rebuilt from the ground up for today’s electricians. Whether you’re in the field or planning ahead, PipeNWire makes it easy to determine the right conduit size based on your selected wires, pipe material, and desired fill percentage.
Accurate. Intuitive. Built for the trade.
FEATURES:
• Conduit Fill Calculations Made Easy
Choose your conduit material (EMT, IMC, etc.), select wire types and gauges, and pick your target fill percentage (e.g., 40%, 53%). PipeNWire instantly shows the smallest compliant conduit size based on NEC tables.
• Supports All Standard Wire Types
THHN, XHHW, RHH, and more—each with available gauges and accurate area values. We’ve preloaded everything you need.
• Smart Conduit Selector
Quickly scroll through available conduit sizes. PipeNWire centers on the first size that meets your fill criteria and lets you explore other options easily.
• Save & Load Calculations
Save your work with a custom name and reopen calculations later.
• Override the Recommendation
Need to upsize for future pull capacity or job specs? You’re in control—select any size and still see detailed fill data.
• Remembers Your Last Setup
PipeNWire remembers your most recent selections so you can pick up right where you left off.
Why PipeNWire?
• Built specifically for electricians by the developer of the widely-used iBend Pipe app
• Lightning-fast interface with no fluff—just what you need
• Code-aware logic based on National Electrical Code tables
• Made for real-world use: at the job site, in the truck, or during planning
Whether you’re sizing EMT for a quick pull or planning a complex wire run, PipeNWire takes the guesswork out of conduit sizing and helps you work with confidence.
Download PipeNWire today and streamline your workflow with the conduit fill calculator made for pros.
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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.
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January 13, 2026