Max Zs Values vs The Voltage Drop Calc

Calculate and look up the maximum permitted Zs value ( earth loop impedance ). Max Zs Values also includes the 80% temperature adjusted values and a some MCCB 60947-2 manufacture Zs charts. - 100% BS 7671 Zs Values - 80% On Site Guide Zs Values - 0.4 (s) second disconnection times - 0.2 (s) second disconnection times - 5 (s) second disconnection times - Common BS EN Devices: Scroll through the list of protective devices and select the device rating to calculate the maximum permitted Zs value for your selected protective device and rating combination. - 60947-2 MCCB's Zs Tables: Look up the maximum permitted Zs tables for a selection of MCCB manufacture devices (some). - Maximum Zs Features: + Maximum Disconnection Times + BS 7671 18th Edition Zs Tables + Fuse's + MCB's + RCBO's + RCD's in TT earthing systems + Max REC Ze values + 100% values + 80% values + 0.4 second disconnection times + 0.2 second disconnection times + 5 second disconnection times + Uo 55v (U 110v) single phase and Uo 63.5v (three phase) Zs values + BS EN 60947-2 MCCB manufacture device charts (some) There is now a new "Zs Converter" to convert old Zs values to the new 18th edition 230v Cmin Zs values. Check out our collection of electrical apps such as the "Pro Certs" Electrical Certification App for iPad.

Voltage Drop Calculator A simple, practical voltage drop calculator for electricians and engineers. Quickly calculate voltage drop, cable size, and load voltage for single-phase and three-phase systems. Designed to be easy to use on site, with advanced tools available for professionals. Free Features • Basic voltage drop calculation • Single-phase and three-phase systems • Copper or aluminium conductors • Adjustable cable length and load current • Power factor support • Clear voltage drop and percentage results Pro Features • UK BS 7671 (18th Edition) voltage drop calculations • mV/A/m tables for common cable types • Cable size finder to meet % voltage drop limits • Advanced calculation options • Ad-free experience Built for Electricians Whether you’re checking a quick voltage drop or designing a circuit to standards, this app keeps calculations fast, clear, and reliable. Notes Voltage drop results are intended as guidance. Always verify final designs against current wiring regulations and manufacturer data. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/