Electrical Analysis Tools

Electrical analysis tools.

 

 

 

Wire Sizing ...

Ampacity and voltage drop tables

Ampacity table common gages and insulations...

Voltage drop for 12, 24, 48 and 120 volt systems...

The two main things in picking wire size are: 1) don't exceed the maximum current carrying (ampacity) of the wire, and 2) don't have an excessive voltage drop along the wire.

I find these two tables helpful in a lot of cases to check for ampacity and for voltage drop.

Voltage Drop Calculator,
Nick Degaggis

Wire Size Calculator ...

Another similar one from cerrowire...

Very handy wire size calculator.


It calculates the minimum wire size for 3% or less voltage drop.

Another good voltage drop calculator

http://www.csgnetwork.com/voltagedropcalc.html

 

Another very nice calculator.
Various wire sizing and maximum amperage tools, tables, calculators, and wire application data:

cerrowire Technical Information -- lots helpful design information on wires and wiring
http://www.cerrowire.com/default.aspx?id=8

Maximum allowable current in wires as a function of insulation type.
http://www.teicontrols.com/ampacity.html                

 Maximum number of conductors in conduit as a function of wire gauge and conduit size.
http://www.teicontrols.com/conduit.html             

Another wire table for AWG that includes resistance per 100 ft and much more.
Wire Table            

 And another from Northern Arizona Wind & Sun
www.windsun.com/Hardware/Wire_Table.htm  

PV Array Sizing
PVWatts  -- A Performance Calculator for Grid-Connected PV Systems
From NREL

http://rredc.nrel.gov/solar/calculators/PVWATTS/

This is a really useful tool.

An easy calculator you can use to find out how much power you will get from a PV installation in your area.

It calculates PV system performance based on hour by hour records for sun in your area.

Version 1 is very easy to use, and works worldwide.
Version 2 allows more detailed inputs, but seems rather complex and puzzling at times to me.

PV wiring recommended distances and currents chart.

PV Wire Chart

 

Recommended distances and currents for 2% voltage drop in low voltage PV circuits.
Electric Motor Tools
http://www.teicontrols.com/motoramp.html

 

Approximate motor current draw at full load.