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25 amps
Wiki User
∙ 11y ago
Wiki User
∙ 11y ago37Amperes
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What is 4mm in gauge thickness?
4mm sheet metal falls 24 gauge and 25 gauge. 24 gauge sheet metal is 3.175mm (0.125") thick, and 25 gauge sheet metal is 6.35 (0.25") mm thick.
What is the weight of mild steel pipe OD 40mm and wall thickness 4mm?
=3.14 * (Diameter of pipe in Mtr. - wall thickness in Mtr. ) * Wall Thickness in Mtr. * 7850
How can you calculated the weight of MS pipe diameter of 500MM and plate thickness 4MM and length6M?
how to calculate the weight of 30x30 squre tube 2mm thick
Can you use silica sand as a dry screed over underfloor heating pipes?
Unfortunately not. You require a 0-4mm sharp sand which can be purchased through most builders merchants. The mix should be approximately 1:4 Cement / Sand ratio. Mix to an earthy consistency and compact well. The cement is the conductor of the heat. Good luck with the project.
How do you waterproof drywall?
To waterproof plasterboard or drywall wall linings, cover them completely with a waterproof material. Materials that can be used include:* Acrylic or fibreglass sheet: ~4mm thick stiff solid acrylic/fibreglass sheets that need special jointers and/or sealant at all joins and are glued to the wall lining. Use details provided by the sheet manufacturer. Sealant will need replacing after some years, and can be a mould problem. Sheets require careful cleaning to avoid scratching. Many preformed shower cubicles are made from these materials.* Pre-coated fibre cement or oil-impregnated wood-based fibreboard: These are also ~4mm thick stiff sheets that need special jointers and/or sealant at all joins and are glued to the wall lining. Use details provided by the sheet manufacturer. Sealant will need replacing after a some years, and can be a mould problem. Sheets require careful cleaning to avoid scratching. * Wall vinyl :~1mm thick vinyl produced specially for wall use. Joints need to be welded to seal and all details must follow the manufacturers instructions. Welding is solvent rather than heat based and these joints are critical so this skilled job best done by experienced tradespeople. Special jointers are available to join wall vinyl to thicker floor vinyl. Cleaning is similar to floor vinyl. * Waterproof membranes with protective covering: Sheets of membranes are lapped and glue or tape sealed. They can be self adhesive or glued on to the substrate. Liquid applied membranes are painted on to the substrate. The liquid applied membranes can be applied to complex shapes. Glass fibre reinforcing is applied between coats, to the joints and corners of substrates to strengthen the membrane. These membranes are then covered it with tile or vinyl as a protective layer as the membranes are not a durable wearing surface.Note: Glazed ceramic tiles are not waterproof. The glazing is waterproof but the tile is porous. Fully vitrified or porcelain tiles are waterproof, but no grout is truly waterproof, and grout will also get microcracks over time.Tiling over thick, dense, reinforced cement plaster is a system that has been accepted as water resistant by some because the tiles shed the bulk of the water and the cement resists further water penetration. It is an adaptation from systems used over masonry, where water penetration is not as critical.Any waterproofing over timber framing must be reliable because any fine cracks or broken seals will admit water to the timber and the rot will not be noticeable until it is well advanced. The substrate for the waterproofing must be as rigid as possible to resist any movement in the flexible timber framing.Some plasterboard or drywall products are oil-impregnated to resist water penetration. These are not waterproof, and are a backup rather than a waterproofing system.Some waterproofing systems cannot be used over walls that have a vapour barrier. Check with the supplier.
Current carrying capacity of 4mm sq cable?
AS PER THUMB RULE THE CURRENT CARRYING CAPACITY OF WIRE IS 4 TIMES OF ITS CROSSECTIONAL AREA OF WIRE i.e. 10 sq.mm wire carrying maximum current 40 amp , 16 sq.mm carrying maximum current 64 amp , now amp convert in watt by multiplying by volt i.e. 240 16 sq.mm carrying max load 64x240= 15360 watt
What size is a 4mm diamond?
A 4mm diamond measures 4mm in at least one measurement.
How big is 4mm cartilage in knee?
4mm its in the question
How many inches 4mm?
4mm is 0.15748032 of an inch.
How wide is 4mm on a ring?
As wide as 4mm on a ruler
What is the smaller 5mm or 4mm?
4mm is smaller than 5mm
What is 4mm-6mm in inches?
4mm-6mm in inches = -2
How much weight is 25 mm?
25mm - 4mm thick150mm -4mm thick50mm - 4mm thick
How do you calculate the maximum withstandable current in a cable?
To know how much current a load is drawing, you must know Ohm's Law. You must also need to know what the voltage is and the resistance of the load. IMPROVED ANSWER 1 / DATE:25.05.10: Before discussing this question, I would like to share few things regarding the information, I got from the webs. When I search the different kind of answers for this question, I finally satisfied from sir Kevin Boone's (UK) explanation. I can share those information. Topic is selection of cable, selection of protection device for a circuit etc. Several steps are there, we can see one by one: Step 1: Find the nominal current for the given load. For eg., if you choose 5kw load, the nominal current for such load is 5000/230 = 21.7 ~ 22A. Step 2: From the nominal current, we can choose a MCB of rating 30A. (should be greater than the nominal current, so it could be next available MCB) Step 3: Selection of cable should withstand the nominal current. In which one should keep in mind that we should consider the type of installation of the cable. Because the rating of current for the cable can be vary according to the installation. For eg., installing the cable inside the wall or trunk or any other strong insulation or through the open air. The cable which installed open in the air can withstand more current when compare to the cable which installed inside the wall. So for simplicity, we can assume the cable is installed inside the wall (generally this kind of installation is followed by most of the engineers). When I go through the manufacturer table 4mm 2 cable installed inside the wall can carry current up-to 25A. So it is suitable for our load. Step 4: Now for our 5kw load, 30A MCB & 4mm 2 size cable are selected. But keep in mind the surrounding temperature should be consider. Since the current rating for the cable could be vary to the temperature. Normally the installation is designed for 35 degree to 40 degree Celsius. Let us consider the ambient temperature is 35 degree. So under 35 degree Celsius the 4mm 2 cable's correction factor is 0.94 (IEE wiring Regulations 2001). So the current rating of the cable under 35 degree Celsius is 25 * 0.94 = 23.5A. It is satisfied to withstand for our 5kw load. Step 5: Voltage drop should be taken in account. Normally voltage drop could be up-to 9.2 V (4% from the rated voltage) is allowed. Let us assume from the distribution board to the load, the total cable length is 20m. From IEE wiring Regulation table 4D2B: the resistance of line & neutral per meter is 0.011 ohms. So for 20m length it will be 0.011 * 20 = 0.22 ohms. The voltage drop is 22A * 0.22 ohms = 4.84V. So it is well suited under 9.2V. Hence our selection is correct. CONCLUSION: For our selected load 5kw, 4mm 2 cable with 30A MCB is the good choice. NOTE: Comments, Correction, modifications, improved answers, related questions & answers are most welcome.
Show 4mm on a ruler?
show me what 4mm look like on a ruler. Compare 4mm to another image, like a bug or a dime, or a string etc.
How many 4MM bicone beads to an inch?
There are 25.4mm to one (1) inch, so there would be approximately six (6) 4mm beads per inch. If buying a 16" hank of 4mm bicone beads, you would be buying approximately 100 4mm beads.
What fraction of 4 cm is 4mm?
fraction of 4 cm is 4mm = 1/101 cm = 10mm4 cm = 40mm4mm/4cm = 4mm/40mm = 4/40 or 1/10
