Technical Archives

Overvoltage protection & commercial installations

|Date: 20 September, 2019

Overvoltage protection & commercial installations

The technical team at Crabtree clears up the requirements for overvoltage protection in commercial sites, ...

The technical team at Crabtree clears up the requirements for overvoltage protection in commercial sites, as stated in the 18th Edition regulations. Electrical installations in commercial premises are ...

20 September, 2019
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Changes to domestic fire alarm standards

|Date: 17 September, 2019

Changes to domestic fire alarm standards

Andy Speake, National Technical Manager at Aico, explores the recently revised British Standard for domes ...

Andy Speake, National Technical Manager at Aico, explores the recently revised British Standard for domestic fire alarms and what this means for contractors. BS 5839-6 is the code of practice for the ...

17 September, 2019
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Made 2 Measure: Making tests at socket outlets

|Date: 12 September, 2019

Made 2 Measure: Making tests at socket outlets

The Megger team answer your questions about accessing terminals. You ask: When I’m testing installations, ...

The Megger team answer your questions about accessing terminals. You ask: When I’m testing installations, making tests at socket outlets is a pain. Removing the socket from the wall to access the term ...

12 September, 2019
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Learning Lounge: Converting a TN-C-S to TT for an EV Charging Point

|Date: 9 September, 2019

Learning Lounge: Converting a TN-C-S to TT for an EV Charging Point

18th Edition Amendment One to bring vital updates to Electric Vehicle Charging – this video might help ex ...

18th Edition Amendment One to bring vital updates to Electric Vehicle Charging – this video might help explain why! Following on from their last video which looked at the use of Earth Electrodes to pr ...

9 September, 2019
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Low-voltage switchgear: making a sound selection

|Date: 4 September, 2019

Low-voltage switchgear: making a sound selection

Gary Parker, ECA Senior Technical Engineer talks to PE about the different types of protective devices an ...

Gary Parker, ECA Senior Technical Engineer talks to PE about the different types of protective devices and the main considerations when selecting and specifying low voltage switchgear. Low voltage swi ...

4 September, 2019
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EV Charging: Why Are Isolation Transformers Important?

|Date: 1 August, 2019

EV Charging: Why Are Isolation Transformers Important?

The experts at Electro-Wind tell us more. As a specialist in isolation transformers for EV charging insta ...

The experts at Electro-Wind tell us more. As a specialist in isolation transformers for EV charging installers, Electro-Wind is offering advice to electricians regarding the requirements of the 18th E ...

1 August, 2019
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High Protective Conductor Currents

|Date: 30 July, 2019

High Protective Conductor Currents

More essential technical advice from the team at ELECSA. As part of their normal operation many electroni ...

More essential technical advice from the team at ELECSA. As part of their normal operation many electronic items, such as computers, printers, games consoles and the like, can cause a current to ﬂow i ...

30 July, 2019
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18th Edition: A Year of Changes & Challenges

|Date: 24 July, 2019

18th Edition: A Year of Changes & Challenges

Remarkably, it’s now a year since the publication of the 18th Edition wiring regulations. ECA’s Senior Te ...

Remarkably, it’s now a year since the publication of the 18th Edition wiring regulations. ECA’s Senior Technical Support Engineer Gary Parker highlights some of the more challenging changes, and those ...

24 July, 2019
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Made2Measure: Should You Be Using The Stakeless Method?

|Date: 23 July, 2019

Made2Measure: Should You Be Using The Stakeless Method?

Megger offer their technical advice regarding the stakeless method. You ask: I’ve just finished testing a ...

Megger offer their technical advice regarding the stakeless method. You ask: I’ve just finished testing a lightning protection system using the traditional three-wire system for checking the resistanc ...

23 July, 2019
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Which Maximum Earth Fault Loop Impedance Values Should You Use?

|Date: 18 July, 2019

Which Maximum Earth Fault Loop Impedance Values Should You Use?

NAPIT’s Don Holmes provides us with more essential technical information. ...

NAPIT’s Don Holmes provides us with more essential technical information. The maximum earth fault loop impedance values (Zs) in BS 7671 – or the equivalent tables in th ...

18 July, 2019
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