SS 551:2022
Code of practice for earthing
OVERVIEW
This standard provides guidance on meeting the requirements for the earthing of electrical installations, including:
a) protective earthing of low voltage installations to SS 638;
b) the interface between LV and HV substations within buildings; and
c) protective earthing and changeover switch arrangements for generators supplying low voltage installations.
The earthing of a system or installation is generally provided for reasons of safety.
This standard applies only to land-based installations in and around buildings. It does not apply to:
1) ships, aircraft or offshore installations;
2) earthing of medical equipment;
3) special problems encountered with solid state electronic components;
4) equipment sensitive to static electricity;
5) requirements for functional earthing;
6) earthing of overhead lines between electrical installations; or
7) the internal earthing of equipment.
COMMENTS
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PRODUCT DETAILS
| Status | Current |
|---|---|
| Edition | 2022 |
| No. of Pages | 92 |
| ICS Classification | 13.260 Protection against electric shock. Live working 29.240.01 Power transmission and distribution networks in general |
| Committee | Electrical and Electronic Standards Committee |
| Available for Purchase | Global |
| Adoption | BS 7430:2011+A1:2015 : 2015 MOD |