+180 Visual Maps: Inspection & Testing

Here’s a Sneak Peek at What You’ll Get

Real pages from inside the set, exactly as you’ll receive them.

Sound familiar?

You do the tests, but can’t always explain why
The regs and GN3 read like a legal document
One odd reading and the whole job stalls
C2 or C3? You’re never 100% sure
Hours of YouTube, still nothing clicks
Notes everywhere, nothing in one place

It’s not you. It’s just never been shown to you visually.

Same Topic. Two Very Different Pages.

Visual map about insulation resistance testing

4.7 Measurement of insulation resistance: general considerations

The measurement of insulation resistance is to be undertaken on each circuit with that circuit isolated from all sources of supply, and with due account taken of any equipment connected to the circuit which may either influence the value obtained or be adversely affected by the application of the test voltage, in which case such equipment should be disconnected prior to the commencement of the test or, where disconnection is not reasonably practicable, the line and neutral conductors may be connected together so that the test voltage is applied between the combined live conductors and the protective conductor only.

The test voltage applied should be appropriate to the nominal voltage of the circuit concerned, and the value recorded should be compared with the minimum value given in the relevant table, it being understood that the values obtained on circuits of considerable length, or on circuits having a number of parallel paths, will generally be lower than those obtained on individual items of equipment, and that this does not of itself indicate a defect.

Where a value lower than the minimum is obtained, the circuit should be subdivided and each part tested separately in order to establish the location of the fault, and consideration should be given to the possible presence of moisture, contamination, damage to cable sheaths or the connection of equipment not previously identified, before any conclusion is drawn as to the condition of the insulation, with the results of all such tests recorded on the appropriate schedule.

Attention is further drawn to the need to ensure that any surge protective devices, electronic accessories or sensitive control equipment are suitably isolated or otherwise taken into account, and that on completion of the test all conductors are reconnected and any temporary links removed, the circuit being restored to its normal condition before it is energised again.

❌ The usual way ✅ Our visual map

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Everything You Need. One Visual Page at a Time.

Understand the why behind every test
Follow the right test sequence, step by step
Read your results in seconds
Code defects with confidence
Avoid the mistakes that fail candidates
Updated for BS 7671 Amendment 4

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Plus 3 Bonuses

Choose the complete package today and these come with it, for just £10 more.

Bonus #1

100 Real World EICR Defects

Real situations with the correct code and why.

See the defect, learn the code and understand the reasoning behind it. After 100 real examples, choosing between C1, C2, C3 and FI stops being guesswork on your next report.

Valued at ~~£22~~IN THE COMPLETE PACKAGE

Bonus #2

Pocket Reference Sheets

Key values and sequences for the van.

Common test values, the right test order and the key regulations at a glance. Check what you need in seconds on site instead of digging through the book.

Valued at ~~£19~~IN THE COMPLETE PACKAGE

Bonus #3

On Site EICR Checklists

Print and tick off on every job.

Visual inspection, testing, results and observations, all in order. Work through them on every job so nothing gets missed and every report is complete.

Valued at ~~£37~~IN THE COMPLETE PACKAGE

All 3 bonuses worth ~~£78~~, yours for just £10 more today

Choose Your Package

The complete visual system for the exam and for the job.

★ Recommended ★

The Visual Maps box set with the 3 bonuses

+180 Visual Maps11 modules, every topic on one clear page
£17
100 Real World EICR DefectsReal situations with the correct code and why
£22
Pocket Reference SheetsKey values and sequences for the van
£19
On Site EICR ChecklistsPrint and tick off on every job
£37
Instant and lifetime accessPhone, tablet, computer or print
INCLUDED
7 day money back guaranteeFull refund, no questions asked
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Total value~~£95~~

Today only£27One payment. No subscription.

You save £68 today

Get the Complete Package for £27Maps + 3 bonuses, instant access

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↑ The complete package is only £10 more and adds 3 bonuses worth £78.

Maps only: the +180 visual maps, without the 3 bonuses. £17, one payment.

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Your Questions, Answered

I’ve failed part of the 2391 before. Will this help?

It’s built for exactly that. Every map shows the why, the how and the common exam trap, so you can see where marks are usually lost and go back in better prepared.

GN3 and BS 7671 just don’t stick for me. Is this easier?

Yes, that’s the whole idea. Instead of pages of dense text, each topic is one visual page you can understand at a glance, with the regulation reference so you can find it in the book when you need it.

I don’t have much time to study. Will it still work?

Yes. One topic is one page, so you can go through a map in a few minutes on your phone, on a break, in the van or before bed.

Will it help me do EICRs on my own?

It shows you the right test sequence, how to read your results and how to code defects with confidence. The complete package adds 100 real defects and printable checklists for site. It’s a study and reference tool to use alongside your qualification.

Is it updated for Amendment 4?

Yes, it’s built on BS 7671:2018+A4:2026.

What’s the difference between the two options?

Both include the +180 visual maps. The complete package also includes the 3 bonuses: 100 Real World EICR Defects, Pocket Reference Sheets and On Site EICR Checklists, for £10 more.

How do I get it, and can I print it?

It’s a PDF sent straight to your email right after payment. Use it on your phone, tablet or computer, or print it as many times as you want.

What if it’s not for me?

You’re covered by the 7 day guarantee. Email us within 7 days and get a full refund. No questions asked.

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