How do you calculate cable size?
How do you calculate cable 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 95 Sq.mm cable for single run, short circuit capacity = 8.2 KA.
- Current capacity of 95 Sq.mm cable is 200 Amp,
- Total derating current of 70 Sq.mm Cable = 200 · 0.93 = 187 Amp.
What is the formula of cable?
Cable Design Formulas
| Weight | = | 340.5 D2 GNK = lbs./1,000 ft. |
|---|---|---|
| D | = | diameter of conductor in inches |
| G | = | specific gravity of conductor material; (8.89 for copper, 2.71 for aluminum) |
| N | = | number of strands |
| K | = | weight increase factor for stranded conductor. (K = 1 for solid conductor) |
How do you calculate cable size for MCB?
Size of MCB for Branch Circuit-3:
- Load Current of Freeze= (No X Watt X Demand Factor)/Volt =(1X200X0.
- Branch Circuit-3 Current as per NEC = Non Continues Load+125% Continues Load.
- Branch Circuit-3 Current as per NEC =(0.87)+125%(0) =0.87Amp.
- Type of Load=Lighting Type.
- Class of MCB=B Class.
- Size of MCB=6 Amp.
What is cable size?
Cross sectional area of the conductor – sometimes called ‘cable size’ Given as mm², it describes the total cross-sectional area of the copper conductor. 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.
What is maximum current of 1.0 mm square wire?
Current Carrying Capacity: 11 A 1.0 Sq.mm Finolex Electrical Wire
| Brand | Finolex |
|---|---|
| Current Carrying Capacity | 11 A |
| Color | Red, Yellow |
| Insulation Material | PVC |
| Packing Type | Carton Box |
How much power can a 1.5 mm cable carry?
between 14 and 20 amps
Depending on the installation method used, the 1.5mm cable has a maximum rated capacity of between 14 and 20 amps, so its right on the limit.
Which is more sensitive 30mA or 100mA?
1 Answer. Yes, 30mA is safer than 100mA. 10mA, the lowest standard size, is safer still.
