Standards referenced in the HORIZON electrical catalogue:
- BS 4568 / BS EN 50086 / IEC 61386 Part 1 – steel and flexible conduit
- BS 4568 / BS EN 50086 / IEC 61386 Part 2 – conduit fittings, boxes and accessories
- BS EN 61386 Class 3 and Class 4 – steel conduit
- BS 731 Part 1 – PVC coated galvanised flexible conduit
- BS 4340 grade 43A – copper bonded earth rods (as stated in the catalogue)