How Much Load Can A 6mm Cable Take?

What load can a 4mm cable take?

4mm clipped direct has a current rating of 37 amps, all other installation methods drop that rating down below 32 amps..

How can you tell the difference between 6mm and 10mm cable?

lucus. the way i usually tell is that the earth on a 6mm is 2.5 solid and the earth on a 10mm is a 6mm stranded, hope this helps.

Is 6mm cable OK for a cooker?

Plain and simple you need a 10mm cable, 6mm is not correct, it may work but may also burn your house down, you take the risk.

What size cable do I need for 9.5 kW shower?

10mm is advised by the manufacturer as it is a ‘safe’ choice and will be OK in most installations, it is not contravening the regulations to fit a cable that is too large. Wrong. If the shower is rated at 9.5KW at 230V then at 240V it will not pull less than 40A.

How do you calculate cable load size?

Full Load Current = (KVA · 1000) / (1.732 · Voltage): Full Load Current = (100 · 1000) / (1.732 · 415) = 139 Amp….Let’s select 3.5 core 70 cable for single run.Current capacity of 70 cable is: 170 Amp, … Total derating current of 70 cable = 170 · 0.93 = 159 Amp.More items…•

What size shower can I run on 6mm cable?

6mm cable, depending on the run, is likely to be fine for an 8.5kW shower. Rcd protection is helpful, but bonding and cross bonding are far more important. And a 30a breaker, fuse wire wouldn’t pop for overload either as it’s unlikely to be overloading long enough.

What is 6mm cable used for?

6mm cable is normally used to power a cooker and or a hob. In older propertys you may find it has been run in to supplie a shower however 10mm is more appropriate now.

Is 6mm cable OK for 9kw shower?

Showers up to 9kw may carry a 6mm cable as long as the shower unit is within 18 meters of the fuseboard. Fuses and switches should be rated at 40 amps. Showers up to 12.5kw should carry a 10mm cable to units within 35 metres of the fuseboard. Fuses and switches should be rated at 50 amps.

How many amps can 6mm twin and earth?

We plan to use our standard 1.5mm twin and earth cable that the manufacturer rates at 20 amps, but the cables are run under thick (more than 100mm) insulation in the loft (installation method 101) so our cables current carrying capacity is reduced to 13 amps (from top table).

How many amps can a 6mm cable carry?

Single-Core 90°C Thermosetting Insulated Cables, Non-Armoured, with or without SheathCurrent-carrying Capacity (amperes):Conductor cross-sectional areaReference Method A (enclosed in conduit in thermally insulating wall etc.)Reference Method C (clipped direct) Spaced by one cable diameter2.52634435466455924 more rows

Can 6mm take 40a?

6mm twin and earth cable (which this almost certainly is) can be backed up by a maximum of a 32a MCB, even lower if other factors are involved. You’ll need that 10mm cable and a 40a MCB unfortunately as your shower is going to draw over 32a. Whoever fitted the 40a MCB onto the 6mm cable originally was in the wrong.

Is 6mm cable OK for a 9.5 kW shower?

9.5kW is either 39A or 41A depending on the voltage it is rated at. 6mm cable is 47A when installed in the most favourable conditions. So 6mm could be used, depending on how it is installed. However it would be usual to use 10mm which would allow the fitting of a higher rated shower either now or in the future.