H07RN-F Flexible Rubber Cable by the Metre

H07RN-F: the all-round flexible cable

H07RN-F cable (also written H07RNF) is the standard flexible cable for portable and outdoor use. Its harmonised code describes how it is made: H for harmonised, 07 for a 450/750 V rating, R for rubber insulation, N for a polychloroprene (neoprene) sheath and F for flexible conductors.

• class 5 stranded bare copper conductors, very flexible and tolerant of vibration and movement;
• EPR rubber insulation and a black polychloroprene sheath, resistant to UV, weather, oils and hydrocarbons;
• suitable for 230 V single-phase and 400 V three-phase circuits;
• compliant with EN 50525-2-21.

Available sizes

• H07RN-F 2 x 1 mm²: two conductors, for low-power loads and lighting.
• H07RN-F 3G 1.5 mm²: three conductors including the green/yellow earth, for appliances and luminaires that must be earthed.
• H07RN-F 2 x 2.5 mm²: two conductors for higher currents or longer runs.
• H07RN-F 2 x 4 mm²: the largest size, for example to limit voltage drop on a long run or at extra-low voltage.

In the code, “G” means the cable contains a green/yellow protective conductor, while “x” means it does not. A Class I appliance (with an earth connection) is therefore wired with 3G cable.

How to choose the cross-section

The cross-section depends on the current to be carried, the length of the run and the installation method. The higher the current and the longer the distance, the larger the cross-section must be; otherwise the cable heats up and the voltage drops at the far end. This matters most at 12 V or 24 V, where currents are high for the same power. If in doubt, have your choice checked by an electrician.

Typical uses

Made-to-length extension leads, replacement flexes for tools and portable appliances, garden and pool lighting, gate motors, site wiring: H07RN-F works indoors and outdoors, bends and coils easily and withstands mechanical stress. Keep a bending radius of at least 3 times the cable diameter when fixed and 6 times when flexing.

It is also the output cable of our IP54 AC/DC power supplies. To terminate conductors on a transformer, see our solder lugs.

Ordering by the metre

The cable is sold by the metre: the quantity in your basket is the length delivered in one continuous piece (50 items = 50 metres). For long lengths or other sizes, ask for a quote and we will reply within 48 hours. Business customers get 5% off the whole site with a pro account.