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An EPR hazard zone could exist in buildings where a HV transformer is located directly next to the building. Remember this potential has no fixed wall barriers and although the transformer can not be viewed by the person located inside their building. That HV transformer maybe located only metres away from him only being separted by a concrete wall.
There are strict distances handed down by the ACMA which installers must abide by. They can all be found in the AS / ACIF S009: 2006 (Appendix H)
These are just a few examples but seek the correct wiring rules for greater guidance.
| Type of HV pole or tower |
Typically looks like this |
Harzard Zone |
| Steel lattice tower (220 kV and higher) |
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40 metres |
| Pole with 3-Phase or SWER transformer, or with underground power cables |
 |
15 metres |
| HV wooden pole without down conductor to earth electrode or any pole that only supports LV power lines |
 |
1 metres |
| This page was last modified on 25 January 2010 and maybe out of date with regards to its information at the time of reading this article. The information above is only intended for use a guide and should not be relied upon as a substitute for technical advice. Quality Electrics disclaims responsibility for any damage, claim, or liability any person may incur, whether caused by negligence or otherwise, as a result of anything contained in our articles. |
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