What is the largest cable size?
The larger the AWG number or wire guage, the smaller the physical size of the wire. The smallest AWG size is 40 and the largest is 0000 (4/0). AWG general rules of thumb – for every 6 gauge decrease, the wire diameter doubles and for every 3 gauge decrease, the cross sectional area doubles.
Which wire size has the largest diameter?
Wire is manufactured in sizes according to a standard known as the American wire gauge (AWG). The wire diameters become smaller as the gauge numbers become larger. The largest wire size shown in Figure 4-74 is number 0000, and the smallest is number 40.
How do you determine the correct cable size?
Selection of cable – Case #2
- Current capacity of 95 Sq.mm cable is 200 Amp, Resistance = 0.41 Ω/Km and. Reactance = 0.074 mho/Km.
- Total derating current of 70 Sq.mm Cable = 200 · 0.93 = 187 Amp.
- Voltage drop of cable = (1.732 · 139 · (0.41 · 0.8 + 0.074 · 0.6) · 200 · 100) / (415 · 1 · 1000) = 2.2%
What is the diameter of a cable?
A few key terms: Cable will be sized 1 mm², 2 mm², 4 mm² etc. and may be written as 1 mm, 2mm, 4mm. This is not the diameter of the cable. Usually given as 19 x 0.41 or 19/0.41 which decoded means 19 strands of 0.41 mm diameter wire.
What are the standard cable sizes?
Standard Cable & Wire Sizes
| International standard wire sizes (IEC 60228) | ||
|---|---|---|
| 0.5 mm² | 0.75 mm² | 1 mm² |
| 6 mm² | 10 mm² | 16 mm² |
| 70 mm² | 95 mm² | 120 mm² |
| 300 mm² | 400 mm² | 500 mm² |
What are the 3 types of wires?
Expert Answer:
- The electric power line enters our house through three wires- namely the live wire, the neutral wire and the earth wire.
- To avoid confusion we follow a colour code for insulating these wires.
- The red wire is the live wire, and the black wire is neutral.
- The earth wire is given green plastic insulation.
What are the three types of cables?
There are three specific types network cables, and the connectors associated with each, that you must know for this exam: fiber, twisted pair, and coaxial.
What current can 16mm cable carry?
Single-Core 90°C Thermosetting Insulated Cables, Non-Armoured, with or without Sheath
| Current-carrying Capacity (amperes): | ||
|---|---|---|
| Conductor cross-sectional area | Reference Method A (enclosed in conduit in thermally insulating wall etc.) | Reference Method B (enclosed in conduit on a wall or in trunking etc.) |
| 10 | 61 | 66 |
| 16 | 81 | 88 |
| 25 | 106 | 117 |
What is the maximum load for 2.5 mm cable?
around 23-25 amps
How much load can a 6mm cable take?
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….How many amps 6mm cable can carry?
| Cable size | Rating in Amps |
|---|---|
| 1.5mm | 20 |
| 2.5mm | 27 |
| 4mm | 37 |
| 6mm | 47 |
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./span>
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.
Can I run a 10.5 kW shower on 6mm cable?
Just to throw a spanner in the works, a 6mm cable will be fine for a 10.5kW shower if no derating factors apply, such as insulation or ambient temperature./span>
What size shower can you run on a 6mm cable?
Well 6mm tandE takes 47A… IF clipped direct, and not to0 long of a run, say about 10-15meters. That means that 6mm is ok for 10.5KW showers (SOMETIMES)./span>
Can I fit a 8.5 kW shower on a 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./span>
What size cable do I need for a 10.8 kW shower?
The issue often gets fudged because the duration of usage is usually short, i.e. much less than one hour, but a 50A MCB would be appropriate for a 10.8kW shower installed at the end of 10.0mm² T&E cable./span>
What size fuse do I need for a 9.5 kW shower?
A 9.5kW shower should be installed with 10mm2 cable with a fuse rating of 40-45A, NOT 6mm2 ! It should also be RCD or RCBO protected. A >9kW shower supplied by 6mm2 cable on a 32A MCB (normally used for 5mm (2×2./span>
Can 8.5 kW replace 7.5 kW shower?
4 Answers from MyBuilder Bathroom Fitters A 7.5kw shower can be supplied using a 4mm cable, but for 8.5kw, you will need at least 6mm cable. Changing the fuse/circuit breaker would allow the shower to work but the cable could overheat and presents a fire risk./span>
Is a 7.5 kW shower any good?
7.5kW and 8.5kW electric showers If your household hosts a smaller water tank or an unreliable water supply, this range of kW rates will probably suit you best. 7.5kW and 8.5kW shower rates require less power so the gentler flow of water will mean your shower is unlikely to ever run cold./span>
What size cable is required for a 8.5 kW shower?
Cable Sizes by kW Rating
| kW Electric Shower Rating | Recommended Cable Size |
|---|---|
| 7000 (7 kW) | 6mm2 |
| 7500 (7.5 kW) | 10mm2 |
| 8000 (8 kW) | 10mm2 |
| 8500 (8.5 kW) | 10mm2 |
What size fuse do I need for a 8.5 kW shower?
The Right Fuse for Your Electrical Shower
| Kilowatt Rating | Fuse Size |
|---|---|
| 8.5 kW | 40 amperes |
| 9.0 kW | 40 amperes |
| 9.5 kW | 40 amperes |
| 9.8 kW | 45 amperes |
What size fuse do I need for a 10.5 KW shower?
Normally for a shower it woul be a 40 or 45amp fuse/circuit breaker. 9000watts divided by 230volts = just over 39 amps. Its also worth checking that you have an RCD (redisual current device) fitted, as all showers must now be RCD protected./span>
Can I replace a 9kw shower with a 9.5 KW?
you don’t have to change the wiring, what you have will do fine. just check that the mcb is big enough, some electric showers call for 45 amp – though if you are going down from a 9.5 to a 9kw it should be fine./span>
What size breaker do I need for a 10.5 KW shower?
10.5kw, 10mm it, As Phill pointed out, right on the edge of 6mm. What it your total lenth of cable and that should deside it. I personally would upgrade to 10mm./span>
How many amps does a 10KW shower use?
IET Forums – 10KW shower. 40a breaker is fine. mk make a B45 i believe. Depends on the exact voltage at the location, could be anywhere between 39- 42 amps in reality./span>
Do I need an electrician or plumber to fit an electric shower?
If you’re having a new electric shower installed, you will need to hire a Part P certified plumber who can safely complete the shower installation ensuring all wiring is in the correct places. Replacing an electric shower still requires plumbing and electrical experience, as your new shower may have higher wattage.
Can I replace my electric shower myself?
If you are replacing an existing electric shower with a new one, it is certainly possible to install it yourself. If the shower unit has a higher wattage than the old one, you may need the assistance of an electrician as cables may need to be changed to withstand higher currents./span>