VOB
Belgian NBN single-core PVC building wire (H07V-U/-R), Cu/PVC, no sheath
VOB is the Belgian building wire (H07V-U/-R) for 450/750 V: a single PVC-insulated copper core without a sheath, for conduit, trunking and switchboards. The most common wire in Belgian installations. Supplied to order; the lead time is stated in the quote.
VOB is the Belgian single-core installation wire (building wire) to NBN C 32-123 / HD 21.3 (H07V-U solid, H07V-R stranded) for 450/750 V fixed wiring. It consists of a single copper conductor insulated with PVC; there is no outer sheath, so VOB is drawn into conduits, trunking and cable ducts, or wired in enclosures and distribution boards. The PVC insulation is colour-coded to HD 308 S2 (including green/yellow for protective conductors). VOB is the most common wire in Belgian domestic and commercial installations; where a sheathed cable is required, XVB or XGB is used instead.
Also known as: building wire
Applications
- Fixed wiring in conduit, trunking and duct in Belgian installations.
- Wiring of switchboards and distribution boards.
- Residential and commercial builds to Belgian specification.
What to look out for
- Solid (H07V-U) in the small sizes, stranded (H07V-R) from 6 mm² upward; the finely stranded version is called VOBs and needs ferrules.
- VOB is the Belgian H07V-U/H07V-R: in a Dutch specification look for that designation.
- Need a sheathed cable? Choose XVB (PVC) or XGB (halogen-free).
- Conductor
- Plain annealed copper: solid class 1 (H07V-U) in the small sizes, stranded class 2 (H07V-R) from 6 mm² upward, acc. to IEC 60228. A flexible VOBs variant with a class 5 conductor (H07V-K) is available.
- Insulation
- Polyvinyl chloride (PVC), type TI1.
- Core identification
- Single colour per HD 308 S2: blue, brown, black, grey, red, orange or green/yellow.
- Sheath
- None (single-core insulated wire).
- Rated voltage Uo/U
- 450/750 V.
- Test voltage
- 2.5 kV AC.
- Standard
- NBN C 32-123 / HD 21.3 (EN 50525-2-31); conductor acc. to IEC 60228.
- Reaction to fire (CPR)
- Class Eca acc. to EN 50575 (halogen-free VOB-variant Cca on request).
- Flame-retardant
- Acc. to IEC 60332-1-2.
- Max. conductor temperature
- +70 °C (short circuit +160 °C, max. 5 s).
- Permitted ambient temperature, fixed
- −15 °C to +70 °C.
- Min. bending radius, fixed
- 4 × outer diameter.
VOB or XVB?
VOB
- single core, no sheath
- 450/750 V
- in conduit, trunking or enclosure
XVB
- sheathed cable
- 0.6/1 kV
- clipped, on trays, in concrete
VOB is a single insulated core without a sheath, for 450/750 V. That is why VOB always goes in conduit, trunking or an enclosure. XVB is a sheathed 0.6/1 kV cable that may be clipped, run on cable trays or embedded in concrete. If you pull wires into conduit, choose VOB; if the run has no conduit, choose XVB.
View XVB →VOB or VOBs?
VOB
- equivalent to H07V-U and H07V-R
- solid or stranded
VOBs
- equivalent to H07V-K
- fine-stranded conductor
VOB is the Belgian name for H07V-U and H07V-R: solid in the small sizes and stranded in the larger ones. VOBs is the flexible version with a fine-stranded conductor, equivalent to H07V-K. VOBs is easier to wire in enclosures and distribution boards, but needs ferrules. For ordinary conduit installation, VOB is sufficient.
YMvK Cca
XLPE insulated, PVC sheathed installation cable 0.6/1 kV
Lead time: 1–2 working days from stock
In stock: 3G2.5 · 4G2.5 · 5G2.5 · 5G4 · 5G6 +1
H07V-R
PVC insulated stranded wire, 450/750 V
Lead time: 1–2 working days from stock
In stock: 50 · 70 · 95 · 120 mm²
H07Z1-K
LSZH insulated flexible wire, halogen-free, 450/750 V
Lead time: 1–2 working days from stock
In stock: 50 · 70 mm²
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