Search
English
RFQ
Home
Electrical Calculator
Market
Solutions
Knowledge
Download the app
MENU
Home
Market
Solutions
Knowledge
English
Home
Electrical Calculator
Wire/Cable calculation
Categories
Transformer calculation
Wire/Cable calculation
Current calculation
Motor calculation
Conversion calculation
Basis calculation
Resources
Pinout
Current carrying capacity of insulated conductors
Standard
*
IEC
NEC
Method of installation
*
1-A1|Insulated conductorsor single-core cables in conduit in a thermally insulated wall
2-A2|Multi-core cablesin conduit in a thermally insulated wall
3-A1|Multi-core cable direct in a thermally insulated wall
4-B1|Insulated conductorsor single-core cables in conduit on a wooden or masonry wall or spaced lessthan 0.3 × conduit diameter from it
5-B2|Multi-core cable in conduit on a wooden or masonry wall or spaced lessthan 0.3 × conduit diameter from it
6-B1|Insulated conductorsor single-core cables in cable trunking (includes multi-compartment trunking) on a wooden or masonry wall run horizontally or vertically
8-B2|Multi-core cable in cable trunking (includes multi-compartment trunking) on a wooden or masonry wall run horizontally or vertically
10-B1|Insulated conductorsor single-core cable in suspended cable trunking
11-B2|Multi-core cable in suspended cable trunking
12-A1|Insulated conductorsor single-core cable run in mouldings
15-A1|Insulated conductorsin conduit or singlecore or multi-core cable in architrave
16-A1|Insulated conductorsin conduit or singlecore or multi-core cable in window frames
20-C|Single-core or multi-core cables fixed on, or spaced lessthan 0.3 × cable diameter from a wooden or masonry wall
21-C|Single-core or multi-core cables fixed directly under a wooden or masonry ceiling
22-E|Single-core or multi-core cablesspaced from a ceiling
30-C|Single-core or multi-core cableson unperforated tray run horizontally or vertically
31-F|Single-core cable on perforated tray run horizontally or vertically
31-E|Multi-core cable on perforated tray run horizontally or vertically
32-F|Single-core cable on bracketsor on a wire meshtray run horizontally or vertically
32-E|Multi-core cable on bracketsor on a wire meshtray run horizontally or vertically
33-F|Single-core cable spaced more than 0.3 timescable diameter from a wall
33-E|Multi-core cable spaced more than 0.3 timescable diameter from a wall
34-F|Single-core cable on ladder
34-E|Multi-core cable on ladder
35-F|Single-core cable suspended from or incorporatinga support wire or harness
35-E|Multi-core cable suspended from or incorporatinga support wire or harness
36-G|Bare or insulated conductorson insulators
40-B2|Single-core or multi-core cable in a building void（1.5De＜=V＜5De）
40-B1|Single-core or multi-core cable in a building void（5De＜=V＜20De）
42-B2|Single-core or multi-core cable in conduit in a building void（1.5De＜=V＜20De）
42-B1|Single-core or multi-core cable in conduit in a building void（V＞20De）
44-B2|Single-core or multi-core cable ducting in a building void（1.5De＜=V＜20De）
44-B1|Single-core or multi-core cable ducting in a building void（V＞20De）
46-B2|Single-core or multi-core cable in cable ducting in masonry havinga thermal resistivity not greater than 2 K·m/W（1.5De＜=V＜20De）
46-B1|Single-core or multi-core cable in cable ducting in masonry havinga thermal resistivity not greater than 2 K·m/W（V＞20De）
47-B2|Single-core or multi-core cable in a ceiling void or in a raised floor（1.5De＜=V＜5De）
47-B1|Single-core or multi-core cable in a ceiling void or in a raised floor（5De＜=V＜50De）
50-B1|Insulated conductorsor single-core cable in flushcable trunking in the floor
51-B2|Multi-core cable in flushcable trunking in the floor
52-B1|Insulated conductorsor single-core cables in flushcable trunking
53-B2|Multi-core cable in flushtrunking
54-B2|Insulated conductorsor single-core cables in conduit in an unventilated cable channel run horizontally or vertically（1.5De＜＝V＜20De）
54-B1|Insulated conductorsor single-core cables in conduit in an unventilated cable channel run horizontally or vertically（V＞＝20De）
56-B1|Single-core or multi-core cable in an open or ventilated cable channel run horizontally or vertically
57-C|Single-core or multi-core cable direct in masonry havinga thermal resistivity not greater than 2 K·m/W
59-B1|Insulated conductorsor single-core cables in conduit in masonry
60-B2|Multi-core cablesin conduit in masonry
70-D1|Multi-core cable in conduit or in cable ducting in the ground
71-D1|Single-core cable in conduit or in cable ducting in the ground
72-D2|Sheathed single-core or multi-core cables direct in the ground
Conductor
*
Copper
Aluminum
Insulation
*
PVC
XLPE/EPR
Wire size
*
1.5mm²
2.5mm²
4mm²
6mm²
10mm²
16mm²
25mm²
35mm²
50mm²
70mm²
95mm²
120mm²
150mm²
185mm²
240mm²
300mm²
400mm²
500mm²
630mm²
Ambient temperature
*
10°C｜50°F
15°C｜59°F
20°C｜68°F
25°C｜77°F
30°C｜86°F
35°C｜95°F
40°C｜104°F
45°C｜113°F
50°C｜122°F
55°C｜131°F
60°C｜140°F
65°C｜149°F
70°C｜158°F
75°C｜167°F
80°C｜176°F
Conductors for circuit
*
2
3
Phase conductors in parallel
*
1
2
3
4
5
6
7
8
Circuits in the same conduit
*
1
2
3
4
5
6
7
8
9
12
16
20
Derating factor for parallel cables (if paresent)
*
Yes
No
Calculate
Source professional electrical partners, experts, and explore smart grid & energy solutions.
Inquiry
Send Now
Download
IEE-Business is dedicated to serving the personnel in the global power industry.
Join IEE-Business, not only can you discover power equipment and power knowledge, but also canhnd like - minded friends!
