Instruction Manual

PowerOptimal Elon® 100 Installation Manual
Version date: 2022/05/23
Page 31 of 37
Version number: 2.20
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City
Lightning strike
density Ng
(strikes/km²/yr)
Lcrit (m)
Individual residential
premises
Service / industrial /
agricultural buildings
Upington
6 to 15
8
30
Pietermaritzburg
15 to 21
5
21
Greytown
15 to 21
5
21
Polokwane
15 to 21
5
21
Bloemfontein
15 to 21
5
21
Queenstown
15 to 21
5
21
Vryburg
15 to 21
5
21
Mahikeng
15 to 21
5
21
Mbombela (Nelspruit)
15 to 21
5
21
Kimberley
21 to 27
4
16
Pretoria
21 to 27
4
16
Vereeniging
21 to 27
4
16
Welkom
21 to 27
4
16
Johannesburg
27 to 33
3.5
13
Ermelo
33 to 42
2.5
10
Newcastle
33 to 42
2.5
10
From Evert & Gijben (2017).