Sparks Electrical News August 2015

people on the move 24

Bright Spark

JB Switchgear

WPI

Chopping the chocolate

Leon Solomon , regional business unit manager, Carletonville.

Daphne Archer , creditors.

Kehilwe Salobodiwe , office assistant.

Sulayman Ally, senior estimator.

Veronica Ntshiba , receptionist

BARRY was the happy owner of a giant chocolate bar, which he wanted to break up into 35 small squares. However, he couldn't decide how to do it. He thought of breaking it into five strips and then breaking up the strips, but then he wondered whether he should break it instead into two large rectangles, and break up each of those separately; Naturally, he wanted to make as few breaks as pos- sible. Can you say what was the smallest number of breaks needed?

July solution

Amatch puzzle In any knockout tournament, each match knocks out one player. Therefore, if there are 35 players there will have to be 34 matches to leave one winner. This will be so however the matches are arranged, and however the byes are organised.

SEPTEMBER FEATURES

Editor: Erika van Zyl Advertising: Carin Hannay Production & layout: Colin Mazibuko Consultant: Ian Jandrell PrEng, BSc(Eng), GDE, PhD, FSAIEE, MIEEE Director: Jenny Warwick Publisher: Karen Grant Earthing, lightning and surge protection, earthing systems, surge protective devices, fuses, protection of structures and electronic equipment against lightning and surge, internal and external lightning protection systems, correct cabling strategies, earth electrode testing, impedance measure- ment and insurance. DISTRIBUTIONBOARDS, SWITCHES, SOCKETS ANDPROTECTION Enclosures, earth leakage devices, circuit breakers, fuses, surge and lightning protection, metering switches, dimmers, sockets, disconnectors, Certificate of Compli- ance, testing andmeasuring instruments, tools and accessories, cabling glands, flameproof. EARTHING, LIGHTNINGAND SURGE PROTECTION

Published monthly by: Crown Publications cc P O Box 140

Bedfordview, 2008 Tel: (011) 622-4770 Fax: (011) 615-6108

e-mail: sparks@crown.co.za Website: www.crown.co.za Printed by: Tandym Print

The views expressed in this publication are not necessarily those of the editor or the publisher .

This publication is distributed to electrical contractors, wholesalers, distributors, OEMs, panel builders, Eskom, mining electricians and consulting engineers (electrical) as well as libraries, members of IESSA and public utilities.

Total 6 779 per month.

august 2015

sparks

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