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Safe isolation kit, checked before you leaveWhat goes in your safe isolation kit?
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Lay it out and look at it before you start: without any one of these you can’t do the job safely. Check every item, even kit someone else has packed — the checking is part of what you are assessed on, not a formality.
| Item | What it is for |
|---|---|
| Approved voltage indicator | A two-pole tester. Proving dead. Its leads and probes meet GS38 |
| Proving unit | A known source, to prove the AVI works — before and after |
| Padlock and key | Locking off. The key stays in your pocket, on you, at all times |
| Lock-off devices | Clip into an MCB to hold it off. The hole takes your padlock |
| Multi-lock hasp | Several trades on one board. It does not come off until the last lock does |
| Warning sign | So anyone coming to that board can see it is locked out |
| Clamp meter | Current in the earthing and main bonding conductors, before and after isolating. A leakage clamp is more accurate below 5 mA than a load one |
| Non-contact voltage detector | A volt stick. Appendix D asks for one specifically — a two-pole tester cannot do its job here |
| Barriers | If the public can reach where you are working |
Electrician’s Guide · Section 7 · 7.5 Best Practice Guide 2 · Electrical Safety First · free download
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