Coming April 2026
Guidance Note 5: Protection Against Electric Shock - 18th Edition Amendment 4, 10th Edition
IET PIETGN5184
Guidance Note 5: Protection Against Electric Shock provides a core element of safety for specifiers, designers, contractors and inspectors. It includes clear guidance on how to apply the safety requirements of BS 7671 concerning electric shock and has been fully updated to BS 7671:2018+A4:2026.
Introducing the IET Guidance Note 5: Protection Against Electric Shock - 18th Edition Amendment 4, a game-changing resource designed to ensure the utmost safety and protection against electric shock in electrical installations. Developed by the prestigious Institution of Engineering and Technology (IET), this comprehensive guide is an essential tool for electrical professionals committed to maintaining the highest standards of safety and compliance.
With the 18th Edition Amendment 4, the IET Guidance Note 5 sets the industry benchmark for protecting against electric shock. Stay up to date with the latest regulations and requirements outlined in the IET Wiring Regulations. This edition provides in-depth insights into various protective measures, including the selection and installation of equipment, bonding and earthing techniques, and the implementation of effective residual current devices (RCDs).
The IET Guidance Note 5 is tailored to meet the needs of professionals at all levels of expertise. Its user-friendly format, clear language, and practical examples make it accessible and applicable in real-world scenarios. Whether you're an experienced electrical engineer or a novice in the field, this guide empowers you to confidently implement measures that mitigate the risk of electric shock and ensure the utmost safety for users of electrical systems.
Investing in the IET Guidance Note 5: Protection Against Electric Shock - 18th Edition Amendment 4 demonstrates your commitment to excellence in electrical safety. Stay ahead of the competition by staying informed about the latest industry regulations, protecting lives and property, and upholding the highest standards of professional practice.
Unlock the full potential of your electrical installations with the IET Guidance Note 5: Protection Against Electric Shock - 18th Edition Amendment 4. Elevate your skills, implement robust protective measures, and enhance your professional reputation as a trusted expert in safeguarding against electric shock. Stay ahead of the curve by embracing the most current industry standards and regulations, ensuring the highest level of safety and compliance.
Don't compromise on the safety or reliability of your electrical systems. Choose the IET Guidance Note 5: Protection Against Electric Shock - 18th Edition Amendment 4 and empower yourself with the knowledge and tools needed to excel in implementing effective measures against electric shock.
We recognise that time is of the essence when it comes to your projects, so we offer a next working day delivery service as standard on the majority of our products*
Order by 3pm for next working day delivery (Excludes Weekends and Public Holidays)
If an order is placed on the weekend, we will dispatch on Monday for delivery to you on Tuesday if in mainland UK. If an order is placed on a Friday it will be with you on Monday.
Deliveries are free over £100 excluding VAT.** We use DX, DPD and Royal Mail as our couriers. Once an order is placed, DX/DPD/RM will contact you (If an email and mobile phone number are supplied).
*Please check the individual product page on estimated delivery times.
**This does not include items shipped direct from manufacturer.
Damages & Discrepancies: All claims for damaged or missing goods must be reported within 48 hours of delivery.
Shipped Direct from Manufacturer: Items shipped direct from manufacturer may incur additional charges which will be calculated at checkout. We cannot guarantee the estimated delivery timeframe displayed. If any item is needed urgently, please contact us and we will contact the manufacturer to confirm the delivery timeframe. Direct from manufacturer shipping rates are as displayed below and will be included in the total shipping cost displayed at checkout.
| Manufacturer |
Direct Shipping Charge |
| Live Eletcrical |
Under £285 (ex VAT) - £7.25 + VAT Over £285 (ex VAT) - Free |
| TIS |
Under £200 (ex VAT) - £14.95 + VAT Over £200 (ex VAT) - Free |
Remote areas: Scottish Highlands, Northern Ireland, Channel Islands and UK Islands such as Isle of Man might be subject to an additional delivery charge depending on the size of the order. If this is the case we will contact you.
These locations will also have a 48 hour delivery service due to distance.
Couriers can deliver up to 8pm but you will have received a timed delivery notification prior to this.
Free delivery does not apply to some products that are required to be delivered by pallet to avoid damage. The cost of this is £100 excluding VAT per pallet. Please note that although every effort is made to try and guarantee a next day delivery for orders shipped by pallet. Sometimes it is a two to three day service.
Free delivery also does not apply to some products over 1.19 metre in length. This is due to the additional costs of shipping products of this size. The cost of this is £25 ex VAT per bundle, with the number of lengths per bundle varying by product. Please note that although every effort is made to try and guarantee a next day delivery for orders for lengths, sometimes it is a two to three day service.
Please note that orders with products over 1.19 metre or requiring a pallet are not sent on DX, DPD or RM. These orders are currently seeing delivery times of 2-3 days.
Order Confirmation
This will be automatically sent to you straight after placing your order, if you don't receive please check your junk inbox to see if it has gone in there.
Delivery Updates
These will be provided via email from us upon despatch and then with tracking details - our couriers will provide timed deliveries so you can arrange to be in within the delivery window without having to wait in all day.
Delivery Carrier
Deliveries will be by Royal Mail, DPD or DX.
Out of Stock Items
If an item you require is Out of Stock on our website, please feel free to contact our sales team and they will be able to provide an expected in stock date.
Deliveries on Requested Days
If you have a particular day you require delivery please write it on the order notes at checkout and our friendly team will arrange & confirm for you.
Aborted Deliveries
If you or the intended recipient are not available when the delivery is attempted a delivery card will be put through your letterbox, or the courier will send a text. Please follow the instructions to rearrange delivery.
Late Deliveries
While we strive to maintain the highest possible standards, there may be occasional circumstances beyond our control that can affect the delivery timeline.
Planning Ahead
Please do not schedule or start any installation work until after you have received your order and checked all goods for any defects or missing parts. This will enable you to resolve any technical questions or to order specific additional fittings if needed. We cannot be held liable for third party delays.
We will make every effort to deliver goods on the date or within the dates quoted, however, such dates are a guideline only and Thomas Electrical Distributors shall not be held liable in any way due to delayed deliveries that are out of our control.
We have a 30-day return policy, which means you have 30 days after receiving your item to request a return.
To be eligible for a return, your item must be in the same condition that you received it, unused, in its original packaging, and in a resalable condition. You’ll also need the receipt or proof of purchase.
To start a return please fill out our returns request here.
If your return is accepted, we’ll advise on how and where to send your package.
Any returns sent without prior authorisation will not be accepted or refunded.
The company reserves the right to make up to a 40% re-stocking fee on certain products which would be deducted from any refund.
All returns are to be made at your cost unless otherwise advised.
You can always contact us for any return questions at orders@thomased.co.uk.
Damages and issues
Please inspect your order upon receipt. Any damaged or missing items must be reported within 48 hours of delivery.
Exceptions / Non-returnable Items
Certain types of items cannot be returned, such as special orders, order shipped direct from manufacturer, bespoke items etc. We also do not accept returns for hazardous materials, flammable liquids, or gases. Please get in touch if you have questions or concerns about your specific item.
Unfortunately, we cannot accept returns on sale items or gift cards.
Exchanges
The fastest way to ensure you get what you want is to return the item you have, and once the return is accepted, make a separate purchase for the new item.
Refunds
We will notify you once we’ve received and inspected your return, and let you know if the refund was approved or not. If approved, you’ll be automatically refunded on your original payment method within 10 business days. Please remember it can take some time for your bank or credit card company to process and post the refund too.
If more than 15 business days have passed since we’ve approved your return, please contact us at orders@thomased.co.uk.