4.9 Based on 1156 reviews 
Description
PV-Ultra® – Double Insulated Multicore DC Cable 2 Core 4mm – 100 metres
Specially developed to meet the requirements of DC installations on photovoltaic systems
- Easier to handle
- Saves installation costs
- Saves installation time
- Easy polarity identification
- Easier to route along/through buildings or walls
- Current carrying capacities based on ambient temperature of 60°C , for temperatures above 60°C temperature derating factors should be applied as follows 70°C=0.91, 80°C=0.82, 90°C=0.71. Refer to BS7671 fur further guidance.
- Reduces the risk of accidental damage
- Gives a cleaner, neater installation
- Safer as it removes the need for junction boxes
- Safer as it looks like a power cable
- Pre-marked ‘LIVE DC’ warning message to improve safety
PV-Ultra has red and white core colours to comply with the latest requirements of
BS7671 with regards to two-wire unearthed DC power circuits (BS7671 Table 51).
The double insulation of PV-Ultra ensures that the electrical equipment up to the DC
connection of the PV inverter is Class II or equivalent insulation (as specified in
BS7671 Clause 712.412.101).
PV Ultra is a multicore DC solution that previously was solved by a multicore armoured
cable. These multicore armoured cables are no longer recommended for use on the DC
side of the installation. PV Ultra can now serve as a direct replacement allowing for a
compliant multicore solution.
The double insulated conductors are particularly suitable for use at the direct current (d.c.)
side of the photovoltaic system, with a nominal d.c. voltage of 1.5kV between conductor
and between conductor and earth. Due to the double insulation these cables are suitable
to be used with Class II equipment (meeting the requirement of BS7671 Clause 712.412.101
which states that the electrical equipment up to the DC connection of the PV inverter shall
be Class II or equivalent insulation)
The double insulated conductors are enclosed in a CarbonTek® bedding, to give even more
electrical protection against the steel wire armour (where applicable), with a final outer
sheathing of SolarTek® PVC being applied to all variants of the cable
(steel wire armoured or not).
PV-Ultra is aesthetically similar to a mains power cable, as opposed to being similar in
appearance to a coaxial cable. Which reduces the probability of homeowners/electricians/
DIYers accidentally cutting a live d.c. cable.
PV-Ultra also includes a yellow warning print that further highlights the hazard that these
cables are live during daylight hours.
Comments for the installer
PV-Ultra provides a quicker, easier and neater install and can be installed using normal
cable accessories, cleats and/or clips and gives additional protection without the need
for conduit installations. The cable can also remove the need for d.c. junction boxes in
certain installations.
We have incorporated a built-in high-tensile rip cord to aid the stripping of the inner bedding.
This removes the risk of causing damage to the inner cores when using traditional stripping
methods such as cable knives, utility knives, or other stripping tools. This construction of
the cable, and the inclusion of this high-tensile rip cord, mean that exposing the cable
conductors is an easy process regardless of what length you need to strip back.
Standard MC4 connectors can be terminated to the cores meaning that the termination
and connection to panels is the same as when using traditional single core PV cables.
PV-Ultra allows for direct connections from the solar panels to the DC isolator/invertor
every time, without the need to assess the route for whether conduits will be required,
and without the need for junction boxes.
The pre-coloured cores allow the installer to easily identify the polarity saving time and
reducing the risk of polarity faults. To ensure this benefit is maintained in the four core
PV-Ultra’s an identifying mark is applied to one of the white cores and one of the red cores;
this allows them to be easily distinguished.
