Aico Carbon Monoxide Detectors
This official sponsor may provide discounts for members

Discuss 2392 Question - Balanced prospective short circuit current between lines in the Electrical Courses and Electrical NVQ's area at ElectriciansForums.net

Welcome to ElectriciansForums.net - The American Electrical Advice Forum
Head straight to the main forums to chat by click here:  American Electrical Advice Forum

The prospective short-circuit current between line and neutral is measured at 900A. The maximum balanced prospective short-circuit current level between lines, as a rule of thumb, can be assumed to be approximately:

A: 0.9 kA
B: 9 kA
C: 90 kA
D: 1.8 kA

:banghead:
 
Test Meter - Forum Sponsors since 2007!
This official sponsor may provide discounts for members
its 1.8kA

In reality, between 2 phases it will be the PSCC between L&N x 1.732

The reason we are taught to multiply by 2 is to account for a possible short between all three phases at once.
 

Strima

-
Arms
Esteemed
A= Amps
kA= Kiloamps

So convert amps to kiloamps and if you have GN3 there's a hint about three phase PSSC in there.
 

Reply to 2392 Question - Balanced prospective short circuit current between lines in the Electrical Courses and Electrical NVQ's area at ElectriciansForums.net

Electrical2Go - Online Electrical Supplier
This official sponsor may provide discounts for members

Select the ways in which you gain online business

  • MyBuilder.com

  • Federation of Master Builders

  • CheckaTrade.com

  • RatedPeople.com

  • TrustaTrader.com

  • Which? (TrustedTraders.Which.co.uk)

  • MyJobQuote.co.uk

  • Yell.com

  • Google Paid Advertising

  • Own Website with Natural Ranking (SEO'd website)

  • Social Media (Facebook Twitter Instagram etc)

  • Word of Mouth Only for me


Results are only viewable after voting.
Bulk Workwear - Clothing Suppliers for the Whole Forum Network
This official sponsor may provide discounts for members
Top Bottom