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In the UK the use of electricity at work is regulated, the HSE guidance on Electricity at Work may be downloaded at this link: [1]

Note: about 8% of fatalities at work are caused by electric shock, (12-16 employee deaths) 210-258 Major Accidents and 500 over three day accidents each year.

Using FE Birds 1969 triangle that is: 5000 minor injuries, 15,000 Damage Accidents & 300,000 near miss accidents every year in the UK due to electricity at work!

Contents 1 I need to make up some single-phase extensions. What cable should I use? 2 I need to make up some three-phase extensions. What cable should I use? 3 What is Three Phase Power 4 What are RCDs

I need to make up some single-phase extensions. What cable should I use?

13A or 15A TRS - 1.5mm²

16A 1P+N+E TRS - 1.5mm² or 2.5mm²

32A 1P+N+E TRS - 6.0mm²

63A 1P+N+E TRS - 10.0mm² or 16.0mm²

125A 1P+N+E TRS - 35.0mm²

I need to make up some three-phase extensions. What cable should I use?

16A 3P+N(+E) TRS - 1.5mm² or 2.5mm²

32A 3P+N(+E) TRS - 6.0mm²

63A 3P+N(+E) TRS - 16.0mm²

125A 3P+N(+E) TRS - 35.0mm²

What is Three Phase Power

See Three Phase

What are RCDs

See RCD

• Discussion