calculation
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Volt Drop Calculation
Appendix 4 in the regs has tables for Current-Carrying Capacity and Voltage drop. I've used these many times with no problems, but i've never had to calculate a cable higher than 25mm. when you look at cables 25mm and higher you see three values for mV/A/m (r, x, & z). Using the calulation...- easymart
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- cable calculation current factor using volt drop volts
- Replies: 7
- Forum: Electrical Wiring, Theories and Regulations
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formula and calculation aid section
Wondered if it would be of use to have a formula and calculation aid section, ie fill in the blanks and get the answeer type thing. :) Dont know how difficult it would be to do :o Any opinions?- Andy Smith
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- calculation formula section
- Replies: 11
- Forum: ElectriciansForums.net News and Updates
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length of circuit calculation - head scratching stuff!
Hi all, How do I work out the length of a circuit? I have these figures R1+R2 = 0.40 The circuit is wired in 2.5mm/1.5mm T&E I take it I need to know the resistance of the T&E (where do I find this?) Could someone give me the formula or point me in the right direction Thank you.- sivoodoo
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- calculation circuit figures length someone stuff thank
- Replies: 10
- Forum: Periodic Inspection Reporting & Certification
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Adiabatic calculation confirmation
Could anyone just confirm my results for adiquate earthing size and calculation using the adiabatic equation... My test was on a ring main circuit wired in 2.5/1.5 pvc.. My supply voltage is 247v My Impedance is 0.38 ohms. The circuit is supplied via a RCBO 32a C type My results suggest that...- DanBrown
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- adiabatic calculation
- Replies: 3
- Forum: Periodic Inspection Reporting & Certification
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Calculation of ZS
Evening guys When calculting ZS u us the formula ze + r1 + r2 So i have 0.18+0.60+1.00 = 1.78 But i also have my r1+r2 result which is 0.40 0.18+0.40 = 0.58 so which 1 do i use then? Cheers guys. :)- rapier
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- calculation
- Replies: 21
- Forum: Periodic Inspection Reporting & Certification
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