Jonathan Marsh's Communities Activities

18th edition devices not shown

Jonathan Marsh — Tue, 26 Nov 2019 12:24:19 GMT

Why can I not view any 18th edition devices? I can only find up to 17th edition. I have the 18th edition showing in the top bar.

Fuse Discrimination Failure Type 2

Jonathan Marsh — Mon, 22 Jul 2019 15:19:11 GMT

I am getting a Failure Type 2 between a 160A BS88 fuse and 63A MCCB, but there is no over lap in the curves (blue and Green). If I change to another manufacturers MCCB it passes. Also if I click estimate fault currents it then passes. the estimated values are different again to the values in cable calculation output.

So am I failing or am I passing? Im a bit confused.

Changes for the 18th Edition - Disconnection times for distribution circuits in a TN system

Yadagani Balakrishna — Wed, 27 Feb 2019 11:38:08 GMT

Hi,

With reference to the post in "Changes for the 18th Edition", what is the reason for considering 1 Sec (see snap below) disconnection time for Other circutis in TN system.

As per BS 7671:2018 Regulation 411.3.2.3 - In a TN system, a disconnection time not exceeding 5 s is permitted for a distribution circuit and for a circuit not covered by Regulation 411.3.2.2.

So is this supposed to be 5 Sec as per the BS 7671?

Print the Discrimination Report

Jonathan Marsh — Mon, 11 Mar 2019 17:44:34 GMT

Is there a way to print of the discrimination report? I have found it in the reports section but the option to click OK is greyed out. My client needs a print out of the earth fault and overload graphs which I can do to PDF.

Ask A Question I

Tue, 06 Mar 2018 06:54:04 GMT

Ask a question in a forum.

Display circuit description on drawing in connect

Jonathan Marsh — Tue, 06 Mar 2018 16:47:17 GMT

How can i show the circuit description above each circuit on a dis board? i.e. Ring main, lighting, pump etc etc