Calculators

🏠Maximum demand and service current

What power do I ask for at the service connection for this dwelling?

You enter:

the fit-out variant, the type of dwelling and the number of dwellings

You get:

the maximum demand, the factors applied and the service current

🔌Cable cross-sectional area and MCB

What cable do I run and what MCB do I fit for this load?

You enter:

the power of the load, the type of circuit, the route length

You get:

the cable cross-sectional area, the MCB rating and the design current

📉Voltage drop

It’s 20 m to get there — how much do I lose on the way?

You enter:

the length, the power and the cross-sectional area

You get:

the voltage drop as a percentage and the verdict against the limit

⚡Current from power

How many amps does this appliance draw?

You enter:

the power and the type of circuit

You get:

the current drawn and the next standard rating up

📏Minimum cross-sectional area by type of circuit

What am I allowed to fit as the absolute minimum on this circuit?

You enter:

the type of circuit and the material

You get:

the minimum cross-sectional area allowed and the article that imposes it

🚿IP rating in the bathroom

Can this piece of equipment go there?

You enter:

the zone and the IP rating of the equipment

You get:

the requirement in the standard and the verdict for your equipment

🔁kW, kVA and amps

How many kVA does that mean, and what current comes out?

You enter:

one value, its unit and the type of circuit

You get:

the other two quantities, plus the reactive power

⏚Earth electrode resistance

How many electrodes do I drive to get below the required threshold?

You enter:

the soil type, the type and the dimensions of the electrode

You get:

the resistance of one electrode and the number needed for the required threshold

🏷️Cable marking decoder

What does the writing on the cable mean, letter by letter?

You enter:

the marking read off the cable

You get:

the meaning of every symbol, with the source and the level of certainty